MCP1603_12 [MICROCHIP]
2.0 MHz, 500 mA Synchronous Buck Regulator; 2.0兆赫500 mA同步降压稳压器
| 型号： | MCP1603_12 |
| 厂家： | 
MICROCHIP |
| 描述： | 2.0 MHz, 500 mA Synchronous Buck Regulator |
| 文件： | 总34页 (文件大小：796K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MCP1603/B/L
2.0 MHz, 500 mA Synchronous Buck Regulator
General Description
Features
• Over 90% Typical Efficiency
• Output Current Up To 500 mA
The MCP1603/B/L is a high-efficiency, fully-integrated
500 mA synchronous buck regulator whose 2.7V to
5.5V input voltage range makes it ideally suited for
applications powered from 1-cell Li-Ion or 2-cell/3-cell
NiMH/NiCd batteries.
• Low PFM Quiescent Current = 45 µA, typical
(MCP1603/L)
• Low Shutdown Current = 0.1 µA, typical
• Adjustable Output Voltage:
At heavy loads, the MCP1603/B/L operates in the
2.0 MHz fixed frequency pulse-width modulation
(PWM) mode, which provides a low noise, low-output
ripple, small-size solution. When the load is reduced to
light levels, the MCP1603/L automatically changes
operation to a Pulse Frequency Modulation (PFM)
mode to minimize quiescent current draw from the
battery. No intervention is necessary for a smooth
transition from one mode to another. These two modes
of operation allow the MCP1603/L to achieve the
highest efficiency over the entire operating current
range.
- 0.8V to 4.5V
• Fixed Output Voltage:
- 1.2V, 1.5V, 1.8V, 2.5V, 3.3V (MCP1603/L)
- 1.8V, 3.3V (MCP1603B)
• 2.0 MHz Fixed-Frequency PWM (Heavy Load)
• Automatic PWM-to-PFM Mode Transition
(MCP1603/L)
• PWM Mode Only Option (MCP1603B)
• 100% Duty Cycle Operation
• Internally Compensated
The MCP1603B device disables the PFM mode
switching, and operates only in normal PWM mode
over the entire load range (without skipping).
MCP1603B is for applications that cannot tolerate the
low-frequency output ripple associated with PFM
switching.
• Undervoltage Lockout (UVLO)
• Overtemperature Protection
• Space Saving Packages:
- 5-LeadTSOT, TwoPinoutTypes(MCP1603/L)
- 8-Lead 2 x 3 DFN
The MCP1603/B/L family is available with either an
adjustable or fixed-output voltage. The available fixed
output voltage options for MCP1603/L are 1.2V, 1.5V,
1.8V, 2.5V and 3.3V, and for MCP1603B are 1.8 and
3.3V. When a fixed option is used, only three additional
small external components are needed to form a
complete solution. Couple this with the low profile,
small-foot print packages and the entire system
solution is achieved with minimal size.
Applications
• Cellular Telephones
• Portable Computers
• Organizers / PDAs
• USB Powered Devices
• Digital Cameras
• Portable Equipment
• +5V or +3.3V Distributed Systems
• Headsets
Additional protection features include: UVLO,
overtemperature and overcurrent protection.
2007-2012 Microchip Technology Inc.
DS22042B-page 1
MCP1603/B/L
Package Types
MCP1603L
MCP1603
MCP1603/MCP1603B
TSOT
2 x 3 DFN*
TSOT
LX
GND
8
1
2
VFB/VOUT
VIN
LX
SHDN
GND
LX
1
2
3
5
4
1
2
3
5
4
NC
SHDN
VIN
NC
NC
7
EP
9
GND
3
4
6
5
V
FB/VOUT
VIN
SHDN
VFB/VOUT
* Includes Exposed Thermal Pad (EP); see Table 3-1.
Typical Application Circuit
L
V
V
1
OUT
IN
4.7 µH
1.8V @ 500 mA
2.7V to 4.5V
V
L
X
IN
C
4.7 µF
C
4.7 µF
IN
OUT
V
SHDN
FB
GND
100
VIN = 2.7V
VOUT = 1.8V
90
80
70
60
50
40
30
20
10
VIN = 3.6V
VIN = 4.5V
__ PFM/PWM (MCP1603/L)
--- PWM (MCP1603B)
0.1
1
10
100
1000
Output Current (mA)
DS22042B-page 2
2007-2012 Microchip Technology Inc.
MCP1603/B/L
Functional Block Diagram
VIN
Band
Gap
VREF
Soft Start
UVLO
UVLO
Thermal
Shutdown
SHDN
ILIMPWM
ILIMPFM
TSD
IPK Limit
IPEAKPWM
IPEAKPFM
Slope
Comp.
OSC
+
-ILPK
NOFF
+
S
R
Q
Q
POFF
LX
Switch Drive
Logic and Timing
PWM/PFM - PWM ONLY
PWM-ONLY
PFM Error Amp
PWM/PFM
Logic
GND
IPEAKPFM
IPEAKPWM
VREF
PWM Error Amp
EA
-ILPK
-IPK Limit
VREF
OV Threshold
UV Threshold
UVLO
TSD
Disable
Switcher
VFB / VOUT
2007-2012 Microchip Technology Inc.
DS22042B-page 3
MCP1603/B/L
NOTES:
DS22042B-page 4
2007-2012 Microchip Technology Inc.
MCP1603/B/L
† Notice: Stresses above those listed under "Maximum
Ratings" may cause permanent damage to the device.
This is a stress rating only and functional operation of
the device at those or any other conditions above those
indicated in the operational sections of this specifica-
tion is not intended. Exposure to maximum rating con-
ditions for extended periods may affect device
reliability.
1.0
ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings †
V
- GND.......................................................................+6.0V
IN
All Other I/O ...............................(GND - 0.3V) to (V + 0.3V)
IN
L
to GND .............................................. -0.3V to (V + 0.3V)
IN
X
Output Short Circuit Current .................................Continuous
Power Dissipation (Note 5)..........................Internally Limited
Storage Temperature ....................................-65°C to +150°C
Ambient Temp. with Power Applied ................-40°C to +85°C
Operating Junction Temperature...................-40°C to +125°C
ESD Protection On All Pins:
HBM .............................................................................4 kV
MM ..............................................................................300V
DC CHARACTERISTICS
Electrical Characteristics: Unless otherwise indicated, MCP1603/L, VIN = SHDN = 3.6V, COUT = CIN = 4.7 µF,
L = 4.7 µH, VOUT(ADJ) = 1.8V, IOUT = 100 mA, TA = +25°C. Boldface specifications apply over the TA range of -40°C
to +85°C.
Parameters
Sym
Min
Typ
Max
Units
Conditions
Input Characteristics
Input Voltage
VIN
2.7
—
—
5.5
V
Note 1
Maximum Output Current
IOUT
500
—
mA Note 1
Shutdown Current
IIN_SHDN
IQ
—
—
0.1
45
1
µA SHDN = GND
Quiescent Current - PFM
60
µA SHDN = VIN, IOUT = 0 mA,
device switching
Quiescent Current - PWM
IQ
1.0
2.7
4
mA SHDN = VIN, IOUT = 0 mA,
device switching (MCP1603B)
Shutdown/UVLO/Thermal Shutdown Characteristics
SHDN, Logic Input Voltage Low
SHDN, Logic Input Voltage High
VIL
—
—
—
15
%VIN VIN = 2.7V to 5.5V
%VIN VIN = 2.7V to 5.5V
µA VIN = 2.7V to 5.5V
VIH
45
—
SHDN, Input Leakage Current
Undervoltage Lockout
IL_SHDN
UVLO
-1.0
2.12
—
±0.1
2.28
140
150
10
1.0
2.43
—
V
VIN Falling
Undervoltage Lockout Hysteresis UVLOHYS
mV
°C
°C
Thermal Shutdown
TSHD
—
—
Note 4, Note 5
Note 4, Note 5
Thermal Shutdown Hysteresis
TSHD-HYS
—
—
Note 1: The input voltage should be greater then the output voltage plus headroom voltage; higher load currents
increase the input voltage required for regulation. MCP1603B device requires a minimum load for
regulation. See Section 2.0, Typical Performance Curves for typical operating voltage ranges.
2: Reference Feedback Voltage Tolerance applies to adjustable output voltage setting.
3: VR is the output voltage setting.
4: The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable
temperature and the thermal resistance from junction to air (i.e. TA, TJ, JA). Exceeding the maximum
allowable power dissipation causes the device to initiate thermal shutdown.
5: The internal MOSFET switches have an integral diode from the LX pin to the VIN pin, and from the LX pin
to the GND pin. In cases where these diodes are forward-biased, the package power dissipation limits
must be adhered to. Thermal protection is not able to limit the junction temperature for these cases.
6: The current limit threshold is a cycle-by-cycle peak current limit.
2007-2012 Microchip Technology Inc.
DS22042B-page 5
MCP1603/B/L
DC CHARACTERISTICS (CONTINUED)
Electrical Characteristics: Unless otherwise indicated, MCP1603/L, VIN = SHDN = 3.6V, COUT = CIN = 4.7 µF,
L = 4.7 µH, VOUT(ADJ) = 1.8V, IOUT = 100 mA, TA = +25°C. Boldface specifications apply over the TA range of -40°C
to +85°C.
Parameters
Sym
Min
Typ
Max
Units
Conditions
Output Characteristics
Adjustable Output Voltage Range
Reference Feedback Voltage
VOUT
VFB
0.8
—
—
0.8
—
4.5
—
V
V
Note 2
-3.0
-2.5
—
+3.0
+2.5
—
%
%
nA
%
%
TA = -40°C to +25°C
TA = +25°C to +85°C
Reference Feedback Voltage
Tolerance
—
Feedback Input Bias Current
Output Voltage Tolerance Fixed
IVFB
VOUT
0.1
VR
VR
0.3
-3.0%
-2.5
—
+3.0%
+2.5
—
TA = -40°C to +25°C, Note 3
TA = +25°C to +85°C, Note 3
VOUT
Line Regulation
Load Regulation
VLINE-REG
%/V VIN = VR + 1V to 5.5V,
IOUT = 100 mA
VLOAD-REG
—
0.35
—
%
VIN = VR +1.5V,
ILOAD = 100 mA to 500 mA
Internal Oscillator Frequency
Start Up Time
FOSC
TSS
1.5
—
2.0
0.6
2.8
—
MHz
ms TR = 10% to 90%
m IP = 100 mA
m IN = 100 mA
RDSon P-Channel
RDSon-P
RDSon-N
ILX
—
500
500
±0.1
—
RDSon N-Channel
—
—
LX Pin Leakage Current
-1.0
1.0
µA SHDN = 0V, VIN = 5.5V,
LX = 0V, LX = 5.5V
Positive Current Limit Threshold
+ILX(MAX)
—
860
—
mA Note 6
Note 1: The input voltage should be greater then the output voltage plus headroom voltage; higher load currents
increase the input voltage required for regulation. MCP1603B device requires a minimum load for
regulation. See Section 2.0, Typical Performance Curves for typical operating voltage ranges.
2: Reference Feedback Voltage Tolerance applies to adjustable output voltage setting.
3: VR is the output voltage setting.
4: The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable
temperature and the thermal resistance from junction to air (i.e. TA, TJ, JA). Exceeding the maximum
allowable power dissipation causes the device to initiate thermal shutdown.
5: The internal MOSFET switches have an integral diode from the LX pin to the VIN pin, and from the LX pin
to the GND pin. In cases where these diodes are forward-biased, the package power dissipation limits
must be adhered to. Thermal protection is not able to limit the junction temperature for these cases.
6: The current limit threshold is a cycle-by-cycle peak current limit.
TEMPERATURE SPECIFICATIONS
Electrical Specifications: Unless otherwise indicated, all limits are specified for: VIN + 2.7V to 5.5V
Parameters
Temperature Ranges
Sym
Min
Typ
Max
Units
Conditions
Operating Junction Temperature Range
Storage Temperature Range
TJ
TA
TJ
-40
-65
—
—
—
—
+125
+150
+150
°C
°C
°C
Steady State
Maximum Junction Temperature
Package Thermal Resistances
Thermal Resistance, 5L-TSOT
Transient
JA
JA
—
—
207.4
68
—
—
°C/W Typical 4-layer Board with
Internal Ground Plane
Thermal Resistance, 8L-2x3 DFN
°C/W Typical 4-layer Board with
Internal Ground Plane and
2-Vias in Thermal Pad
DS22042B-page 6
2007-2012 Microchip Technology Inc.
MCP1603/B/L
2.0
TYPICAL PERFORMANCE CURVES
Note: The graphs and tables provided following this note are a statistical summary based on a limited number of
samples and are provided for informational purposes only. The performance characteristics listed herein
are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
Note: Unless otherwise indicated, MCP1603/L, VIN = SHDN = 3.6V, COUT = CIN = 4.7 µF,
L
= 4.7 µH,
VOUT(ADJ) = 1.8V, ILOAD = 100 mA, TA = +25°C. Adjustable or fixed output voltage options can be used to generate the
Typical Performance Characteristics.
50
49
48
47
46
45
44
43
42
41
40
52
50
48
46
44
42
40
VOUT = 1.8V
TA = +90oC
VIN = 3.6V
VIN = 4.2V
TA = +25oC
VIN = 3.0V
TA = -40oC
2.7 3.05 3.4 3.75 4.1 4.45 4.8 5.15 5.5
Input Voltage (V)
-40 -25 -10
5
20 35 50 65 80 95 110 125
Ambient Temperature (oC)
FIGURE 2-1:
PFM IQ vs. Ambient
FIGURE 2-4:
PFM IQ vs. Input Voltage
Temperature (MCP1603/L).
(MCP1603/L).
3.3
3.4
VOUT = 1.8V
VOUT = 1.8V
TA = +90oC
TA = +25oC
3.2
VIN = 3.0V
3.2
3
3.1
3
VIN = 4.2V
2.9
2.8
2.7
2.6
2.5
2.4
2.8
2.6
2.4
2.2
2
VIN = 3.6V
TA = -40oC
2.7 3.05 3.4 3.75 4.1 4.45 4.8 5.15 5.5
Input Voltage (V)
-40 -25 -10
5
20 35 50 65 80
Ambient Temperature (oC)
FIGURE 2-2:
PWM IQ vs. Ambient
FIGURE 2-5:
PWM IQ vs. Input Voltage
Temperature (MCP1603B).
(MCP1603B).
100
90
80
100
95
VOUT = 1.2V
VIN = 3.6V
VIN = 2.7V
IOUT = 100 mA
90
70
60
50
40
30
20
10
0
85
80
IOUT = 300 mA
75
70
65
60
IOUT = 500 mA
VOUT = 1.2V
VIN = 4.2V
10
PFM/PWM
PWM Only
2.7 3.05 3.4 3.75 4.1 4.45 4.8 5.15 5.5
Input Voltage (V)
0.1
1
100
1000
Output Current (mA)
FIGURE 2-3:
(VOUT = 1.2V).
Efficiency vs. Input Voltage
FIGURE 2-6:
(VOUT = 1.2V).
Efficiency vs. Output Load
2007-2012 Microchip Technology Inc.
DS22042B-page 7
MCP1603/B/L
Note: Unless otherwise indicated, MCP1603/L, VIN = SHDN = 3.6V, COUT = CIN = 4.7 µF,
L
= 4.7 µH,
VOUT(ADJ) = 1.8V, ILOAD = 100 mA, TA = +25°C. Adjustable or fixed output voltage options can be used to generate the
Typical Performance Characteristics.
0.6
0.5
0.4
0.3
0.2
0.1
100
95
90
85
80
75
70
VOUT = 1.8V
VOUT = 1.8V
IOUT = 100 mA
IOUT = 300 mA
IOUT = 300 mA
IOUT = 500 mA
IOUT = 100 mA
-40 -25 -10
5
20 35 50 65 80 95 110 125
2.7 3.05 3.4 3.75 4.1 4.45 4.8 5.15 5.5
Input Voltage (V)
Ambient Temperature (oC)
FIGURE 2-7:
Efficiency vs. Input Voltage
FIGURE 2-10:
Line Regulation vs. Ambient
(VOUT = 1.8V).
Temperature (VOUT = 1.8V).
100
90
80
1.82
VIN = 2.7V
TA = +125oC
1.81
TA = +90oC
TA = +25oC
VIN = 3.6V
1.80
1.79
70
60
50
40
30
20
10
0
1.78
1.77
1.76
1.75
1.74
TA = -40oC
VIN = 4.2V
VOUT = 1.8V
PFM/PWM
PWM Only
100 150 200 250 300 350 400 450 500
Output Current (mA)
0.1
1
10
100
1000
Output Current (mA)
FIGURE 2-8:
Efficiency vs. Output Load
FIGURE 2-11:
Output Voltage vs. Load
(VOUT = 1.8V).
Current (VOUT = 1.8V).
100
100
VIN = 2.7V
VOUT = 2.4V
90
80
70
60
50
40
30
20
10
0
VIN = 3.6V
IOUT = 100 mA
95
90
85
80
75
IOUT = 300 mA
IOUT = 500 mA
VIN = 4.2V
VOUT = 2.4V
PFM/PWM
PWM Only
3
3.5
4
4.5
5
5.5
0.1
1
10
100
1000
Input Voltage (V)
Output Current (mA)
FIGURE 2-9:
Efficiency vs. Input Voltage
FIGURE 2-12:
PFM/PWM Efficiency vs.
(VOUT = 2.4V).
Output Load (VOUT = 2.4V).
DS22042B-page 8
2007-2012 Microchip Technology Inc.
MCP1603/B/L
Note: Unless otherwise indicated, MCP1603/L, VIN = SHDN = 3.6V, COUT = CIN = 4.7 µF,
L
= 4.7 µH,
VOUT(ADJ) = 1.8V, ILOAD = 100 mA, TA = +25°C. Adjustable or fixed output voltage options can be used to generate the
Typical Performance Characteristics.
100.0
97.5
95.0
92.5
90.0
87.5
85.0
2.20
2.15
2.10
2.05
2.00
1.95
VOUT = 3.3V
IOUT = 100 mA
IOUT = 300 mA
IOUT = 500 mA
3.5 3.75
4
4.25 4.5 4.75
Input Voltage (V)
5
5.25 5.5
-40 -25 -10
5
20 35 50 65 80 95 110 125
Ambient Temperature (oC)
FIGURE 2-13:
Efficiency vs. Input Voltage
FIGURE 2-16:
Switching Frequency vs.
(VOUT = 3.3V).
Ambient Temperature.
100
90
2.20
2.15
2.10
2.05
2.00
1.95
VIN = 3.6V
80
70
60
50
40
30
20
10
0
VIN = 4.2V
VOUT = 3.3V
PFM/PWM
PWM Only
2.7 3.05 3.4 3.75 4.1 4.45 4.8 5.15 5.5
0.1
1
10
100
1000
Input Voltage (V)
Output Current (mA)
FIGURE 2-14:
Efficiency vs. Output Load
FIGURE 2-17:
Switching Frequency vs.
(VOUT = 3.3V).
Input Voltage.
10
9
8
7
6
0.65
0.60
0.55
0.50
Regulation
TA= +25oC
5
N-Channel
P-Channel
4
3
2
1
0
TA= -40oC
0.45
0.40
0.35
Ao
No Regulation
2.7 3.05 3.4 3.75 4.1 4.45 4.8 5.15 5.5
Input Voltage (V)
1.8
2
2.2 2.4 2.6 2.8
VIN - VOUT (V)
3
3.2 3.4 3.6
FIGURE 2-15:
PWM-Only Device Minimum
FIGURE 2-18:
Switch Resistance vs. Input
Load for Regulation (MCP1603B).
Voltage.
2007-2012 Microchip Technology Inc.
DS22042B-page 9
MCP1603/B/L
Note: Unless otherwise indicated, MCP1603/L, VIN = SHDN = 3.6V, COUT = CIN = 4.7 µF,
L
= 4.7 µH,
VOUT(ADJ) = 1.8V, ILOAD = 100 mA, TA = +25°C. Adjustable or fixed output voltage options can be used to generate the
Typical Performance Characteristics.
0.9
0.8
N-Channel
0.7
0.6
0.5
0.4
P-Channel
0.3
-40 -25 -10
5
20 35 50 65 80 95 110 125
Ambient Temperature (oC)
FIGURE 2-19:
Switch Resistance vs.
FIGURE 2-22:
PFM Light Load Switching
Ambient Temperature.
Waveforms (MCP1603/L).
FIGURE 2-20:
Output Voltage Startup
FIGURE 2-23:
Output Voltage Load Step
Waveform.
Response vs. Time.
FIGURE 2-21:
Heavy Load Switching
FIGURE 2-24:
Output Voltage Line Step
Waveform.
Response vs. Time.
DS22042B-page 10
2007-2012 Microchip Technology Inc.
MCP1603/B/L
Note: Unless otherwise indicated, MCP1603/L, VIN = SHDN = 3.6V, COUT = CIN = 4.7 µF,
L
= 4.7 µH,
VOUT(ADJ) = 1.8V, ILOAD = 100 mA, TA = +25°C. Adjustable or fixed output voltage options can be used to generate the
Typical Performance Characteristics.
V
= 2 V/div
Lx
V
= 50 mV/div, AC
OUT
I
= 20 mA/div
I
= 5 mA
L
OUT
0.4 µs/div
FIGURE 2-25:
PWM Light Load Switching
Waveforms (MCP1603B).
2007-2012 Microchip Technology Inc.
DS22042B-page 11
MCP1603/B/L
NOTES:
DS22042B-page 12
2007-2012 Microchip Technology Inc.
MCP1603/B/L
3.0
PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 3-1.
TABLE 3-1:
PIN FUNCTION TABLE
MCP1603/B MCP1603L MCP1603
Symbol
Description
TSOT-23
TSOT-23
2 x 3 DFN
1
2
4
2
7
8
VIN
Power Supply Input Voltage Pin
GND
Ground Pin
3
4
1
5
3
SHDN
Shutdown Control Input Pin
4
1
VFB/VOUT Feedback / Output Voltage Pin
5
3
LX
NC
EP
Switch Node, Buck Inductor Connection Pin
—
—
—
—
2, 5, 6
No Connect
Exposed
Pad
For the DFN package, the center exposed pad is a thermal
path to remove heat from the device. Electrically, this pad is
at ground potential and should be connected to GND.
3.1
Power Supply Input Voltage Pin
(V )
3.4
Feedback / Output Voltage Pin
(V /V
)
FB OUT
IN
Connect the input voltage source to VIN. The input
source must be decoupled to GND with a 4.7 µF
capacitor.
For adjustable output options, connect the center of the
output voltage divider to the VFB/VOUT pin. For fixed-
output voltage options, connect the output directly to
the VFB/VOUT pin.
3.2
Ground Pin (GND)
3.5
Switch Node, Buck Inductor
Ground pin for the device. The loop area of the ground
traces should be kept as minimal as possible.
Connection Pin (L )
X
Connect the LX pin directly to the buck inductor. This
pin carries large signal-level current; all connections
should be made as short as possible.
3.3
Shutdown Control Input Pin
(SHDN)
The SHDN pin is a logic-level input used to enable or
disable the device. A logic high (>45% of VIN) will
enable the regulator output. A logic low (<15% of VIN)
will ensure that the regulator is disabled.
3.6
Exposed Metal Pad (EP)
For the DFN package, connect the Exposed Pad to
GND, with vias into the GND plane. This connection to
the GND plane will aid in heat removal from the
package.
2007-2012 Microchip Technology Inc.
DS22042B-page 13
MCP1603/B/L
NOTES:
DS22042B-page 14
2007-2012 Microchip Technology Inc.
MCP1603/B/L
During normal PWM operation, the beginning of a
switching cycle occurs when the internal P-Channel
MOSFET is turned on. The ramping inductor current is
sensed and tied to one input of the internal high-speed
comparator. The other input to the high-speed
comparator is the error amplifier output. This is the
difference between the internal 0.8V reference and the
divided-down output voltage. When the sensed current
becomes equal to the amplified error signal, the high-
speed comparator switches states and the P-Channel
MOSFET is turned off. The N-Channel MOSFET is
turned on until the internal oscillator sets an internal RS
latch, initiating the beginning of another switching
cycle.
4.0
4.1
DETAILED DESCRIPTION
Device Overview
The MCP1603/L is a synchronous buck regulator that
operates in a Pulse Frequency Modulation (PFM)
mode or a Pulse Width Modulation (PWM) mode to
maximize system efficiency over the entire operating
current range. Capable of operating from a 2.7V to
5.5V input voltage source, the MCP1603 can deliver
500 mA of continuous output current.
The MCP1603B device disables the PFM mode
switching, and operates only in normal PWM mode.
When using the MCP1603/B/L, the PCB area required
for a complete step-down converter is minimized, since
both the main P-Channel MOSFET and the synchro-
nous N-Channel MOSFET are integrated. Also while in
PWM mode, the device switches at a constant
frequency of 2.0 MHz (typical), which allows for small
filtering components. Both fixed and adjustable output
voltage options are available. The fixed voltage options
(1.2V, 1.5V 1.8V, 2.5V, 3.3V) do not require an external
voltage divider, which further reduces the required
circuit board footprint. The adjustable output voltage
options allow for more flexibility in the design, but
require an external voltage divider.
PFM-to-PWM mode transition is initiated for any of the
following conditions:
• Continuous device switching
• Output voltage has dropped out of regulation
4.2.1.1
Light Load, PFM Mode
During light-load conditions, the MCP1603/L operates
in a PFM mode. When the MCP1603/L enters this
mode, it begins to skip pulses to minimize unnecessary
quiescent-current draw by reducing the number of
switching cycles per second. The typical quiescent cur-
rent draw for this device is 45 µA.
Additionally, the device features an undervoltage lock-
out (UVLO), overtemperature shutdown, overcurrent
protection and enable/disable control.
PWM-to-PFM mode transition is initiated for any of the
following conditions:
• Discontinuous inductor current is sensed for a set
duration
4.2
Synchronous Buck Regulator
• Inductor peak current falls below the transition
threshold limit
The MCP1603/L has two distinct modes of operation
that allow the device to maintain a high level of
efficiency throughout the entire operating current and
voltage range. The device automatically switches
between PWM mode and PFM mode, depending on
the output load requirements. MCP1603B switches in
PWM mode only.
4.2.2
PWM MODE DEVICE OPTION
(MCP1603B)
There are applications that cannot tolerate the low
frequency pulse skipping mode or the output ripple
voltage associated with it, which is distinctive for PFM
switching.
4.2.1
PFM/PWM MODE DEVICE OPTION
The MCP1603B device has disabled the PFM mode
switching. It operates only in normal PWM mode over
the entire load range (without skipping pulses). During
periods of light load operation, the MCP1603B
continues to operate at a constant 2 MHz switching
frequency, keeping the output ripple voltage lower than
PFM mode. Because there are no skipping pulses, a
minimum load current is necessary to keep output in
regulation (see Figure 2-15, without a minimum load,
the output voltage will be greater than the set point).
The minimum load value depends on the input-to-
output ratio.
(MCP1603/L)
During heavy load conditions, the MCP1603/L
operates at a high, fixed switching frequency of
2.0 MHz (typical) using current mode control. This
minimizes output ripple (10 – 15 mV, typically) and
noise, while maintaining high efficiency (88% typical
with VIN = 3.6V, VOUT = 1.8V, IOUT = 300 mA).
2007-2012 Microchip Technology Inc.
DS22042B-page 15
MCP1603/B/L
4.3
Soft Start
4.6
Enable/Disable Control
The output of the MCP1603 is controlled during start-
up. This control allows for a very minimal amount of
VOUT overshoot during start-up from VIN rising above
the UVLO voltage or SHDN being enabled.
The SHDN pin is used to enable or disable the
MCP1603/B/L. When the SHDN pin is pulled low, the
device is disabled. When pulled high, the device is
enabled and begins operation, unless the input voltage
is below the UVLO threshold or a fault condition exists.
4.4
Overtemperature Protection
4.7
Undervoltage Lockout (UVLO)
Overtemperature protection circuitry is integrated in the
MCP1603/B/L device family. This circuitry monitors the
device junction temperature and shuts the device off, if
the junction temperature exceeds the typical +150°C
threshold. If this threshold is exceeded, the device will
automatically restart once the junction temperature
drops by approximately 10°C. The soft start is reset
during an overtemperture condition.
The UVLO feature uses a comparator to sense the
input voltage (VIN) level. If the input voltage is lower
than the voltage necessary to properly operate the
MCP1603, the UVLO feature will hold the converter off.
When VIN rises above the necessary input voltage, the
UVLO is released and soft start begins. Hysteresis is
built into the UVLO circuit to compensate for input
impedance. For example, if there is any resistance
between the input voltage source and the device when
it is operating, there will be a voltage drop at the input
to the device equal to IIN x RIN. The typical hysteresis
is 140 mV.
4.5
Overcurrent Protection
Cycle-by-cycle current limiting is used to protect the
MCP1603/B/L device family from being damaged when
an external short circuit is applied. The typical peak
current limit is 860 mA. If the sensed current reaches
the 860 mA limit, the P-Channel MOSFET is turned off,
even if the output voltage is not in regulation. The
device will attempt to start a new switching cycle when
the internal oscillator sets the internal RS latch.
DS22042B-page 16
2007-2012 Microchip Technology Inc.
MCP1603/B/L
For adjustable output applications, an additional R-C
compensation network is necessary for control loop
stability. Recommended values for any output voltage
are:
5.0
5.1
APPLICATION INFORMATION
Typical Applications
The MCP1603/B/L 500 mA synchronous buck
regulator operates over a wide input voltage range
(2.7V to 5.5V) and is ideal for single-cell Li-Ion battery-
powered applications, USB-powered applications,
three cell NiMH or NiCd applications and 3V or 5V
regulated input applications. The 5-lead TSOT and 8-
lead 2 x 3 DFN packages provide a small footprint with
minimal external components.
RCOMP = 4.99 k
CCOMP = 33 pF
Refer to Figure 6-2 for proper placement of RCOMP and
CCOMP
.
5.4
Input Capacitor Selection
The input current to a buck converter, when operating
in Continuous Conduction mode, is a squarewave with
a duty cycle defined by the output voltage (VOUT) to
input voltage (VIN) relationship of VOUT/VIN. To prevent
undesirable input voltage transients, the input capacitor
should be a low-ESR type with an RMS current rating
given by Equation 5.5. Because of their small size and
low ESR, ceramic capacitors are often used. Ceramic
material X5R or X7R are well suited, since they have a
low-temperature coefficient and acceptable ESR.
5.2
Fixed Output Voltage Applications
The Typical Application Circuit shows a fixed
MCP1603/B/L in an application used to convert three
NiMH batteries into a well-regulated 1.8V @ 500 mA
output.
A 4.7 µF input capacitor, 4.7 µF output
capacitor, and a 4.7 µH inductor make up the entire
external component solution for this application. No
external voltage divider or compensation is necessary.
In addition to the fixed 1.8V option, the MCP1603 is
also available in 1.2V, 1.5V, 2.5V, or 3.3V fixed voltage
options.
EQUATION 5-2:
VOUT VIN – VOUT
ICIN,RMS = IOUT,MAX
-----------------------------------------------------
VIN
5.3
Adjustable Output Voltage
Applications
Table 5-1 contains the recommend range for the input
capacitor value.
When the desired output for a particular application is
not covered by the fixed-voltage options, an adjustable
MCP1603/B/L can be used. The circuit listed in
Figure 6-2 shows an adjustable device being used to
convert a 5V rail to 1.0V @ 500 mA. The output voltage
is adjustable by using two external resistors as a volt-
age divider. For adjustable-output voltages, it is
recommended that the top resistor divider value be
200 k. The bottom resistor value can be calculated
using the following equation:
5.5
Output Capacitor Selection
The output capacitor helps provide a stable output
voltage during sudden load transients, smooths the
current that flows from the inductor to the load, and
reduces the output voltage ripple. Therefore, low-ESR
capacitors are a desirable choice for the output capac-
itor. As with the input capacitor, X5R and X7R ceramic
capacitors are well suited for this application.
EQUATION 5-1:
The output ripple voltage is often a design specifica-
tion. A buck converters’ output ripple voltage is a
function of the charging and discharging of the output
capacitor and the ESR of the capacitor. This ripple
voltage can be calculated by Equation 5-3.
VFB
RBOT = RTOP ----------------------------
VOUT – VFB
Example:
EQUATION 5-3:
RTOP
VOUT
VFB
=
=
=
200 k
1.0V
I
L
V
= I ESR + --------------------
OUT
L
8 f C
0.8V
Table 5-1 contains the recommend range for the output
capacitor value.
RBOT
RBOT
=
=
200 k x (0.8V/(1.0V – 0.8V))
800 k(Standard Value = 787 k)
TABLE 5-1:
CAPACITOR VALUE RANGE
CIN
COUT
Minimum
Maximum
4.7 µF
—
4.7 µF
22 µF
2007-2012 Microchip Technology Inc.
DS22042B-page 17
MCP1603/B/L
TABLE 5-2:
MCP1603 RECOMMENDED
INDUCTORS (CONTINUED)
5.6
Inductor Selection
When using the MCP1603, the inductance value can
range from 3.3 µH to 10 µH. An inductance value of
4.7 µH is recommended to achieve a good balance
between converter load transient response and
minimized noise.
DCR
(max)
Part
Number
Value
(µH)
ISAT
Size
(A) WxLxH (mm)
Sumida®
CMD4D06
CMD4D06
CMD4D06
Coilcraft®
The value of inductance is selected to achieve a
desired amount of ripple current. It is reasonable to
assume a ripple current that is 20% of the maximum
load current. The larger the amount of ripple current
allowed, the larger the output capacitor value becomes
to meet ripple voltage specifications. The inductor
ripple current can be calculated according to the
following equation.
3.3
4.7
6.8
0.174 0.77
0.216 0.75
0.296 0.62
3.5x4.3x0.8
3.5x4.3x0.8
3.5x4.3x0.8
XFL3012-
332ME_
3.3
4.7
10
0.106
0.143
0.200
1.2
1.0
1.2
3x3x1.2
3x3x1.2
4x4x1.8
XFL3012-
472ME_
EQUATION 5-4:
LPS4018-
103ML_
TDK-EPC®
VOUT
VOUT
IL = ------------------- 1 – ------------
FSW L
VIN
B82462_
G4472M
4.7
4.7
0.04
1.8
1.1
6x6x3
Where:
FSW = Switching Frequency
VLS3015E
T-4R7M
0.113
3x3x1.5
When considering inductor ratings, the maximum DC
current rating of the inductor should be at least equal to
the maximum load current, plus one half the peak-to-
peak inductor ripple current (1/2 x IL). The inductor
DC resistance adds to the total converter power loss.
An inductor with a low DC resistance allows for higher
converter efficiency.
5.7
Thermal Calculations
The MCP1603 is available in two different packages
(TSOT-23 and 2x3 DFN). The junction temperature is
estimated by calculating the power dissipation and
applying the package thermal resistance (JA). The
maximum continuous junction temperature rating for
the MCP1603 is +125°C.
TABLE 5-2:
MCP1603 RECOMMENDED
INDUCTORS
To quickly estimate the internal power dissipation for
the switching buck regulator, an empirical calculation
using measured efficiency can be used. Given the
measured efficiency, the internal power dissipation is
estimated by the following equation:
DCR
(max)
Part
Number
Value
(µH)
ISAT
Size
(A) WxLxH (mm)
Coiltronics®
SD3110
SD3110
SD3110
SD3812
SD3812
SD3812
3.3
4.7
6.8
3.3
4.7
6.8
0.195 0.81
0.285 0.68
0.346 0.58
0.159 1.40
0.256 1.13
0.299 0.95
3.1x3.1x1.0
3.1x3.1x1.0
3.1x3.1x1.0
3.8x3.8x1.2
3.8x3.8x1.2
3.8x3.8x1.2
EQUATION 5-5:
V
I
OUT OUT
------------------------------------- – V
I
OUT OUT
= P
Diss
Efficiency
The difference between the first term, input power
dissipation, and the second term, power delivered, is
the internal power dissipation. This is an estimate
assuming that most of the power lost is internal to the
MCP1603. There is some percentage of power lost in
the buck inductor, with very little loss in the input and
output capacitors.
Würth Elektronik®
WE-TPC
Type XS
3.3
4.7
4.7
6.8
4.7
0.225 0.72 3.3x3.5x0.95
0.290 0.50 3.3x3.5x0.95
0.105 0.90 3.8x3.8x1.65
0.156 0.75 3.8x3.8x1.65
WE-TPC
Type XS
WE-TPC
Type S
WE-TPC
Type S
WE-TPC
Type Tiny
0.100
1.7
2.8x2.8x2.8
DS22042B-page 18
2007-2012 Microchip Technology Inc.
MCP1603/B/L
5.8
PCB Layout Information
Good printed circuit board layout techniques are
important to any switching circuitry, and switching
power supplies are no different. When wiring the high-
current paths, short and wide traces should be used.
This high-current path is shown with red connections in
Figure 5-1. The current in this path is switching.
Therefore, it is important that the components along the
high-current path should be placed as close as possi-
ble to the MCP1603 to minimize the loop area.
The feedback resistors and feedback signal should be
routed away from the switching node and this switching
current loop. When possible, ground planes and traces
should be used to help shield the feedback signal and
minimize noise and magnetic interference.
L
V
V
1
OUT
IN
4.7 µH
1.8V @ 500 mA
2.7V to 4.5V
V
L
X
IN
C
C
IN
OUT
4.7 µF
V
4.7 µF
SHDN
FB
GND
FIGURE 5-1:
PCB High Current Path.
2007-2012 Microchip Technology Inc.
DS22042B-page 19
MCP1603/B/L
NOTES:
DS22042B-page 20
2007-2012 Microchip Technology Inc.
MCP1603/B/L
6.0
TYPICAL APPLICATION CIRCUITS
l
L1
4.7 µH
VOUT
1.5V @ 500 mA
VIN
3.0V to 4.2V
VIN
LX
CIN
4.7 µF
COUT
4.7 µF
VFB
SHDN
GND
FIGURE 6-1:
Single Li-Ion to 1.5V @ 500 mA Application.
L1
4.7 µH
VOUT
1.0V @ 500 mA
VIN
5.0V
VIN
LX
RCOMP
RTOP
4.99 k
CCOMP
33 pF
CIN
4.7 µF
COUT
4.7 µF
200 k
SHDN
VFB
RBOT
GND
787 k
FIGURE 6-2:
5V to 1.0V @ 500 mA Application.
L1
4.7 µH
VOUT
VIN
2.7V to 4.5V
VIN
LX
1.2V @ 500 mA
CIN
4.7 µF
COUT
4.7 µF
VFB
SHDN
GND
FIGURE 6-3:
Three NiMH Batteries to 1.2V @ 500 mA Application.
2007-2012 Microchip Technology Inc.
DS22042B-page 21
MCP1603/B/L
NOTES:
DS22042B-page 22
2007-2012 Microchip Technology Inc.
MCP1603/B/L
7.0
7.1
PACKAGING INFORMATION
Package Marking Information
5-Lead TSOT-23
Example:
ET25
Part Number
Code
MCP1603T-120I/OS
MCP1603T-150I/OS
MCP1603T-180I/OS
MCP1603T-250I/OS
MCP1603T-330I/OS
MCP1603T-ADJI/OS
MCP1603BT-180I/OS
MCP1603BT-330I/OS
MCP1603BT-ADJI/OS
MCP1603LT-120I/OS
MCP1603LT-150I/OS
MCP1603LT-180I/OS
MCP1603LT-250I/OS
MCP1603LT-330I/OS
MCP1603LT-ADJI/OS
ETNN
EUNN
EVNN
EWNN
EXNN
EYNN
GBNN
GENN
GANN
FMNN
FKNN
EJNN
FGNN
FANN
FQNN
8-Lead 2x3 DFN
Example:
Part Number
Code
MCP1603-120I/MC
MCP1603T-120I/MC
MCP1603-150I/MC
MCP1603T-150I/MC
MCP1603-180I/MC
MCP1603T-180I/MC
MCP1603-250I/MC
MCP1603T-250I/MC
MCP1603-330I/MC
MCP1603T-330I/MC
MCP1603-ADJI/MC
MCP1603T-ADJI/MC
AFM
AFM
AFK
AFK
AFJ
AFM
235
25
AFJ
AFG
AFG
AFA
AFA
AFQ
AFQ
Legend: XX...X Customer-specific information
Y
Year code (last digit of calendar year)
YY
WW
NNN
Year code (last 2 digits of calendar year)
Week code (week of January 1 is week ‘01’)
Alphanumeric traceability code
e
3
Pb-free JEDEC designator for Matte Tin (Sn)
*
This package is Pb-free. The Pb-free JEDEC designator (
can be found on the outer packaging for this package.
e3
Note: In the event the full Microchip part number cannot be marked on one line, it will
be carried over to the next line, thus limiting the number of available
characters for customer-specific information.
2007-2012 Microchip Technology Inc.
DS22042B-page 23
MCP1603/B/L
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,ꢁ ꢐꢃ&ꢉꢄ ꢃꢌꢄꢃꢄꢔꢅꢇꢄ"ꢅ%ꢌꢈꢉꢊꢇꢄꢍꢃꢄꢔꢅꢑꢉꢊꢅꢕꢖꢒ*ꢅ-ꢀꢗꢁ+ꢒꢁ
.ꢖ/0 .ꢇ ꢃꢍꢅꢐꢃ&ꢉꢄ ꢃꢌꢄꢁꢅꢘꢎꢉꢌꢊꢉ%ꢃꢍꢇꢈꢈꢋꢅꢉ#ꢇꢍ%ꢅꢆꢇꢈ!ꢉꢅ ꢎꢌ)ꢄꢅ)ꢃ%ꢎꢌ!%ꢅ%ꢌꢈꢉꢊꢇꢄꢍꢉ ꢁ
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ꢒꢃꢍꢊꢌꢍꢎꢃꢑ ꢘꢉꢍꢎꢄꢌꢈꢌꢔꢋ ꢐꢊꢇ)ꢃꢄꢔ /ꢓꢗꢞꢀꢏ<.
DS22042B-page 24
2007-2012 Microchip Technology Inc.
MCP1603/B/L
Note: For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging
2007-2012 Microchip Technology Inc.
DS22042B-page 25
MCP1603/B/L
ꢝꢂꢃꢄꢅꢆꢇꢈꢉꢅꢊꢋꢌꢍꢇ!ꢔꢅꢉꢇ"ꢉꢅꢋ#ꢇꢛꢖꢇꢃꢄꢅꢆꢇꢈꢅꢍ$ꢅ%ꢄꢇꢗ&'ꢘꢇMꢇ+,/,:;<ꢇꢒꢒꢇ=ꢖꢆ>ꢇꢙ!"ꢛꢚ
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ꢏꢁ ꢂꢇꢍ2ꢇꢔꢉꢅ&ꢇꢋꢅꢎꢇꢆꢉꢅꢌꢄꢉꢅꢌꢊꢅ&ꢌꢊꢉꢅꢉ#ꢑꢌ ꢉ"ꢅ%ꢃꢉꢅ(ꢇꢊ ꢅꢇ%ꢅꢉꢄ" ꢁ
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ꢗꢁ ꢐꢃ&ꢉꢄ ꢃꢌꢄꢃꢄꢔꢅꢇꢄ"ꢅ%ꢌꢈꢉꢊꢇꢄꢍꢃꢄꢔꢅꢑꢉꢊꢅꢕꢖꢒ*ꢅ-ꢀꢗꢁ+ꢒꢁ
.ꢖ/0 .ꢇ ꢃꢍꢅꢐꢃ&ꢉꢄ ꢃꢌꢄꢁꢅꢘꢎꢉꢌꢊꢉ%ꢃꢍꢇꢈꢈꢋꢅꢉ#ꢇꢍ%ꢅꢆꢇꢈ!ꢉꢅ ꢎꢌ)ꢄꢅ)ꢃ%ꢎꢌ!%ꢅ%ꢌꢈꢉꢊꢇꢄꢍꢉ ꢁ
ꢙ*10 ꢙꢉ$ꢉꢊꢉꢄꢍꢉꢅꢐꢃ&ꢉꢄ ꢃꢌꢄ'ꢅ! !ꢇꢈꢈꢋꢅ)ꢃ%ꢎꢌ!%ꢅ%ꢌꢈꢉꢊꢇꢄꢍꢉ'ꢅ$ꢌꢊꢅꢃꢄ$ꢌꢊ&ꢇ%ꢃꢌꢄꢅꢑ!ꢊꢑꢌ ꢉ ꢅꢌꢄꢈꢋꢁ
ꢒꢃꢍꢊꢌꢍꢎꢃꢑ ꢘꢉꢍꢎꢄꢌꢈꢌꢔꢋ ꢐꢊꢇ)ꢃꢄꢔ /ꢓꢗꢞꢀꢏ,/
DS22042B-page 26
2007-2012 Microchip Technology Inc.
MCP1603/B/L
Note: For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging
2007-2012 Microchip Technology Inc.
DS22042B-page 27
MCP1603/B/L
NOTES:
DS22042B-page 28
2007-2012 Microchip Technology Inc.
MCP1603/B/L
APPENDIX A: REVISION HISTORY
Revision B (October 2012)
The following is the list of modifications:
1. Added new device option (MCP1603B) with
PWM mode only. Added details on this device
throughout the document.
2. Updated Typical Application Circuit graphic to
show both available options for the
MCP1603/B/L family.
3. Added new graphics to Section 2.0, Typical
Performance Curves: Figures 2-2, 2-5, 2-15
and 2-25.
and 2-14.
Updated
Figures 2-6, 2-8, 2-12
4. Restructured Section 4.2, Synchronous Buck
Regulator to show both PFM/PWM and PWM-
only modes.
5. Updated Table 5-2.
6. Updated
Section 7.1,
Package
Marking
Information with available marking codes and
package specification drawings.
7. Updated the Product Identification System
section.
Revision A (May 2007)
• Original Release of this Document.
2007-2012 Microchip Technology Inc.
DS22042B-page 29
MCP1603/B/L
NOTES:
DS22042B-page 30
2007-2012 Microchip Technology Inc.
MCP1603/B/L
PRODUCT IDENTIFICATION SYSTEM
To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office.
Examples:
PART NO. -XXX
X
/XX
a)
b)
MCP1603-180I/MC:
MCP1603T-180I/MC:
1.80V Buck Regulator,
Industrial Temperature,
8LD-DFN package
Device
Voltage TemperaturePackage
Option
Tape and Reel,
1.80V Buck Regulator,
Industrial Temperature,
8LD-DFN package
Device:
MCP1603: 2.0 MHz, 500 mA Buck Regulator with PFM/PWM
Mode
MCP1603B: 2.0 MHz, 500 mA Buck Regulator with PWM-only
MCP1603L: 2.0 MHz, 500 mA Buck Regulator with PFM/PWM
Mode and Alternate Pinout
c)
a)
MCP1603T-180I/OS:
Tape and Reel
1.80V Buck Regulator,
Industrial Temperature,
5LD-TSOT package
MCP1603BT-180I/OS: Tape and Reel,
1.80V Buck Regulator
Voltage
Option:
MCP1603
MCP1603B
MCP1603L
with PWM Only,
Industrial Temperature,
5LD-TSOT package
ADJ = Adjustable
X
X
X
X
X
X
X
—
—
X
X
X
X
X
X
X
120 = 1.20V Standard
150 = 1.50V Standard
180 = 1.80V Standard
250 = 2.50V Standard
330 = 3.30V Standard
a)
MCP1603LT-180I/OS: Tape and Reel,
1.80V Buck Regulator with
Alternate TSOT Pinout,
Industrial Temperature,
5LD-TSOT package.
—
X
Temperature:
I
=
-40°C to +85°C
Package
Type:
MC
OS
=
=
Plastic Dual-Flat No-Lead Package (MC), 8-Lead
Plastic Thin Small Outline Transistor (OS), 5-Lead
2007-2012 Microchip Technology Inc.
DS22042B-page 31
MCP1603/B/L
NOTES:
DS22042B-page 32
2007-2012 Microchip Technology Inc.
Note the following details of the code protection feature on Microchip devices:
•
Microchip products meet the specification contained in their particular Microchip Data Sheet.
•
Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
intended manner and under normal conditions.
•
There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
•
•
Microchip is willing to work with the customer who is concerned about the integrity of their code.
Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.”
Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
Information contained in this publication regarding device
applications and the like is provided only for your convenience
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
MICROCHIP MAKES NO REPRESENTATIONS OR
WARRANTIES OF ANY KIND WHETHER EXPRESS OR
IMPLIED, WRITTEN OR ORAL, STATUTORY OR
OTHERWISE, RELATED TO THE INFORMATION,
INCLUDING BUT NOT LIMITED TO ITS CONDITION,
QUALITY, PERFORMANCE, MERCHANTABILITY OR
FITNESS FOR PURPOSE. Microchip disclaims all liability
arising from this information and its use. Use of Microchip
devices in life support and/or safety applications is entirely at
the buyer’s risk, and the buyer agrees to defend, indemnify and
hold harmless Microchip from any and all damages, claims,
suits, or expenses resulting from such use. No licenses are
conveyed, implicitly or otherwise, under any Microchip
intellectual property rights.
Trademarks
The Microchip name and logo, the Microchip logo, dsPIC,
FlashFlex, KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro,
PICSTART, PIC logo, rfPIC, SST, SST Logo, SuperFlash
and UNI/O are registered trademarks of Microchip Technology
Incorporated in the U.S.A. and other countries.
32
FilterLab, Hampshire, HI-TECH C, Linear Active Thermistor,
MTP, SEEVAL and The Embedded Control Solutions
Company are registered trademarks of Microchip Technology
Incorporated in the U.S.A.
Silicon Storage Technology is a registered trademark of
Microchip Technology Inc. in other countries.
Analog-for-the-Digital Age, Application Maestro, BodyCom,
chipKIT, chipKIT logo, CodeGuard, dsPICDEM,
dsPICDEM.net, dsPICworks, dsSPEAK, ECAN,
ECONOMONITOR, FanSense, HI-TIDE, In-Circuit Serial
Programming, ICSP, Mindi, MiWi, MPASM, MPF, MPLAB
Certified logo, MPLIB, MPLINK, mTouch, Omniscient Code
Generation, PICC, PICC-18, PICDEM, PICDEM.net, PICkit,
PICtail, REAL ICE, rfLAB, Select Mode, SQI, Serial Quad I/O,
Total Endurance, TSHARC, UniWinDriver, WiperLock, ZENA
and Z-Scale are trademarks of Microchip Technology
Incorporated in the U.S.A. and other countries.
SQTP is a service mark of Microchip Technology Incorporated
in the U.S.A.
GestIC and ULPP are registered trademarks of Microchip
Technology Germany II GmbH & Co. & KG, a subsidiary of
Microchip Technology Inc., in other countries.
All other trademarks mentioned herein are property of their
respective companies.
© 2007-2012, Microchip Technology Incorporated, Printed in
the U.S.A., All Rights Reserved.
Printed on recycled paper.
ISBN: 978-1-62076-632-3
QUALITY MANAGEMENT SYSTEM
CERTIFIED BY DNV
Microchip received ISO/TS-16949:2009 certification for its worldwide
headquarters, design and wafer fabrication facilities in Chandler and
Tempe, Arizona; Gresham, Oregon and design centers in California
and India. The Company’s quality system processes and procedures
are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping
devices, Serial EEPROMs, microperipherals, nonvolatile memory and
analog products. In addition, Microchip’s quality system for the design
and manufacture of development systems is ISO 9001:2000 certified.
== ISO/TS 16949 ==
2007-2012 Microchip Technology Inc.
DS22042B-page 33
Worldwide Sales and Service
AMERICAS
ASIA/PACIFIC
ASIA/PACIFIC
EUROPE
Corporate Office
2355 West Chandler Blvd.
Chandler, AZ 85224-6199
Tel: 480-792-7200
Fax: 480-792-7277
Technical Support:
http://www.microchip.com/
support
Asia Pacific Office
Suites 3707-14, 37th Floor
Tower 6, The Gateway
Harbour City, Kowloon
Hong Kong
Tel: 852-2401-1200
Fax: 852-2401-3431
India - Bangalore
Tel: 91-80-3090-4444
Fax: 91-80-3090-4123
Austria - Wels
Tel: 43-7242-2244-39
Fax: 43-7242-2244-393
Denmark - Copenhagen
Tel: 45-4450-2828
Fax: 45-4485-2829
India - New Delhi
Tel: 91-11-4160-8631
Fax: 91-11-4160-8632
France - Paris
Tel: 33-1-69-53-63-20
Fax: 33-1-69-30-90-79
India - Pune
Tel: 91-20-2566-1512
Fax: 91-20-2566-1513
Australia - Sydney
Tel: 61-2-9868-6733
Fax: 61-2-9868-6755
Web Address:
www.microchip.com
Germany - Munich
Tel: 49-89-627-144-0
Fax: 49-89-627-144-44
Japan - Osaka
Tel: 81-66-152-7160
Fax: 81-66-152-9310
Atlanta
Duluth, GA
Tel: 678-957-9614
Fax: 678-957-1455
China - Beijing
Tel: 86-10-8569-7000
Fax: 86-10-8528-2104
Italy - Milan
Tel: 39-0331-742611
Fax: 39-0331-466781
Japan - Yokohama
Tel: 81-45-471- 6166
Fax: 81-45-471-6122
China - Chengdu
Tel: 86-28-8665-5511
Fax: 86-28-8665-7889
Boston
Westborough, MA
Tel: 774-760-0087
Fax: 774-760-0088
Netherlands - Drunen
Tel: 31-416-690399
Fax: 31-416-690340
Korea - Daegu
Tel: 82-53-744-4301
Fax: 82-53-744-4302
China - Chongqing
Tel: 86-23-8980-9588
Fax: 86-23-8980-9500
Chicago
Itasca, IL
Tel: 630-285-0071
Fax: 630-285-0075
Spain - Madrid
Tel: 34-91-708-08-90
Fax: 34-91-708-08-91
Korea - Seoul
China - Hangzhou
Tel: 86-571-2819-3187
Fax: 86-571-2819-3189
Tel: 82-2-554-7200
Fax: 82-2-558-5932 or
82-2-558-5934
UK - Wokingham
Tel: 44-118-921-5869
Fax: 44-118-921-5820
Cleveland
Independence, OH
Tel: 216-447-0464
Fax: 216-447-0643
China - Hong Kong SAR
Tel: 852-2401-1200
Fax: 852-2401-3431
Malaysia - Kuala Lumpur
Tel: 60-3-6201-9857
Fax: 60-3-6201-9859
Dallas
Addison, TX
Tel: 972-818-7423
Fax: 972-818-2924
China - Nanjing
Tel: 86-25-8473-2460
Fax: 86-25-8473-2470
Malaysia - Penang
Tel: 60-4-227-8870
Fax: 60-4-227-4068
China - Qingdao
Tel: 86-532-8502-7355
Fax: 86-532-8502-7205
Philippines - Manila
Tel: 63-2-634-9065
Fax: 63-2-634-9069
Detroit
Farmington Hills, MI
Tel: 248-538-2250
Fax: 248-538-2260
China - Shanghai
Tel: 86-21-5407-5533
Fax: 86-21-5407-5066
Singapore
Tel: 65-6334-8870
Fax: 65-6334-8850
Indianapolis
Noblesville, IN
Tel: 317-773-8323
Fax: 317-773-5453
China - Shenyang
Tel: 86-24-2334-2829
Fax: 86-24-2334-2393
Taiwan - Hsin Chu
Tel: 886-3-5778-366
Fax: 886-3-5770-955
Los Angeles
China - Shenzhen
Tel: 86-755-8203-2660
Fax: 86-755-8203-1760
Taiwan - Kaohsiung
Tel: 886-7-536-4818
Fax: 886-7-330-9305
Mission Viejo, CA
Tel: 949-462-9523
Fax: 949-462-9608
China - Wuhan
Tel: 86-27-5980-5300
Fax: 86-27-5980-5118
Taiwan - Taipei
Tel: 886-2-2500-6610
Fax: 886-2-2508-0102
Santa Clara
Santa Clara, CA
Tel: 408-961-6444
Fax: 408-961-6445
China - Xian
Tel: 86-29-8833-7252
Fax: 86-29-8833-7256
Thailand - Bangkok
Tel: 66-2-694-1351
Fax: 66-2-694-1350
Toronto
Mississauga, Ontario,
Canada
China - Xiamen
Tel: 905-673-0699
Fax: 905-673-6509
Tel: 86-592-2388138
Fax: 86-592-2388130
China - Zhuhai
Tel: 86-756-3210040
Fax: 86-756-3210049
11/29/11
DS22042B-page 34
2007-2012 Microchip Technology Inc.
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