MIC5313-1.5/1.5YMT [MICREL]
Low Voltage Dual 300mA LDO; 低电压双路，300mA LDO
| 型号： | MIC5313-1.5/1.5YMT |
| 厂家： | 
MICREL SEMICONDUCTOR |
| 描述： | Low Voltage Dual 300mA LDO |
| 文件： | 总12页 (文件大小：307K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MIC5313
Low Voltage Dual 300mA LDO
General Description
Features
The MIC5313 is a high performance, dual low input
voltage, low dropout regulator. Major features include two
300mA LDOs, input voltage down to 1.7V, ultra low drop
out of 85mV at full load. Each LDO has its own low voltage
input for system flexibility. The low input voltages and low
drop out operation provides high efficiency by reducing the
input to output voltage step which minimizes the regulator
power loss.
• 300mA output current for each LDO
• Dual low voltage regulator inputs: 1.7V to 5.5V
• Low output voltage range: 0.8V to 2.0V
• Ultra-low dropout voltage of 85mV @ 300mA
• Stable with 1µF ceramic output capacitors
• Very fast transient response
• Thermal shutdown and current limit protection
• Tiny 10-pin 2mm x 2mm Thin MLF® package
Ideal for battery operated applications; the MIC5313 offers
1% accuracy and low ground current to increase light load
efficiency. The MIC5313 can also be put into a zero-off-
mode current state, drawing virtually no current when
disabled.
Applications
• Mobile Phones
The MIC5313 is available in fixed output voltages in the
10-pin 2mm x 2mm Thin MLF® leadless package.
• GPS and Navigation Devices
• Portable Media Players
• Digital still and video cameras
• PDAs
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
• Portable electronics
___________________________________________________________________________________________________________
Typical Application
VI/O
MIC5313-xxYMT
MIC23031-1.8YMT
VBAT
DC-to-DC
Converter
VIN1
VOUT1
VCORE1
VCORE2
VIN2
VBIAS
VOUT2
CBYP
CIN
1µF
CBIAS
1µF
EN1
EN2
1µF
1µF
10nF
µProcessor
GND
MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
M9999-070208-A
July 2008
Micrel, Inc.
MIC5313
Ordering Information
Part Number
Manufacturing
Marking(1)
Voltage(2)
Junction Temp. Range
Package(3)
Part Number
MIC5313-FCYMT
MIC5313-F3YMT
MIC5313-F4YMT
MIC5313-F5YMT
MIC5313-F6YMT
MIC5313-FFYMT
MIC5313-G4YMT
MIC5313-GGYMT
MIC5313-1.5/1.0YMT
MIC5313-1.5/1.1YMT
MIC5313-1.5/1.2YMT
MIC5313-1.5/1.3YMT
MIC5313-1.5/1.4YMT
MIC5313-1.5/1.5YMT
MIC5313-1.8/1.2YMT
MIC5313-1.8/1.8YMT
FNC
FN3
FN4
FN5
FN6
FNF
GN4
GNG
1.5V/1.0V
1.5V/1.1V
1.5V/1.2V
1.5V/1.3V
1.5V/1.4V
1.5V/1.5V
1.8V/1.2V
1.8V/1.8V
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
10-Pin 2mm x 2mm Thin MLF®
10-Pin 2mm x 2mm Thin MLF®
10-Pin 2mm x 2mm Thin MLF®
10-Pin 2mm x 2mm Thin MLF®
10-Pin 2mm x 2mm Thin MLF®
10-Pin 2mm x 2mm Thin MLF®
10-Pin 2mm x 2mm Thin MLF®
10-Pin 2mm x 2mm Thin MLF®
Notes:
1. Pin 1 identifier = ▲.
2. For other voltage option, contact Micrel Marketing for details
3. MLF® is a GREEN RoHS compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free.
Pin Configuration
VIN1
VIN2
VBIAS
EN1
1
2
3
4
5
10 VOUT1
9
8
7
6
VOUT2
NC
CBYP
GND
EN2
10-Pin 2mm × 2mm Thin MLF® (MT)
Pin Description
Pin Number
Pin Name
VIN1
Pin Function
1
2
3
4
Voltage Input for LDO1.
Voltage Input for LDO2.
Bias Input Voltage.
VIN2
VBIAS
EN1
Enable Input for LDO1. Active High Input. Logic High = On; Logic Low = Off; Do
not leave floating.
5
EN2
Enable Input for LDO2. Active High Input. Logic High = On; Logic Low = Off; Do
not leave floating.
6
7
GND
CBYP
NC
Ground.
Bypass: Connect a capacitor to ground to improve output noise and PSRR.
No Connect. Not internally Connected.
Output of regulator 2.
8
9
VOUT2
VOUT1
10
Output of regulator 1.
M9999-070208-A
July 2008
2
Micrel, Inc.
MIC5313
Absolute Maximum Ratings(1)
Operating Ratings(2)
Main Input Voltage (VIN1, VIN2)..........................0V to VBIAS
Bias Supply Voltage (VBIAS)...............................0V to +6V
Enable Input Voltage (VEN1, VEN2) ....................0V to VBIAS
Power Dissipation ...............................Internally Limited(3)
Lead Temperature (soldering, 3sec.)......................260°C
Storage Temperature (Ts) ..................... –65°C to +150°C
ESD Rating(4)...............................................................2kV
Supply voltage (VIN1, VIN2)...........................+1.7V to VBIAS
Bias Supply Voltage (VBIAS) ........................ 2.5V to +5.5V
Enable Input Voltage (VEN1, VEN2) ...................0V to VBIAS
Junction Temperature (TJ).....................–40°C to +125°C
Junction Thermal Resistance
2mm x 2mm Thin MLF-10 (θJA).............................80°C/W
Electrical Characteristics(4)
VBIAS = 3.6V; VIN1= VIN2 = VOUT (Highest of two regulators) + 1V; CBIAS=COUT= 1.0µF, CBYP=0.01µF, IOUT = 100µA;
TJ = 25ºC, bold values indicate –40ºC to + 125ºC; unless noted.
Parameter
Condition
Min
–1.0
–2.0
Typ
Max
+1.0
+2.0
0.3
0.3
1.0
100
200
12
Units
%
Output Voltage Accuracy
Variation from nominal VOUT1 & VOUT2
Variation from nominal VOUT1 & VOUT2
VIN = VOUT +1V to 5.5V, VBIAS = 5.5V
VBIAS = 3.6V to 5.5V, VIN = VOUT +1V
IOUT = 100µA to 300mA
%
VIN Line Regulation
VBIAS Line Regulation
Load Regulation
0.02
0.02
0.4
40
%/V
%/V
%
Dropout Voltage
IOUT = 150mA
mV
mV
µA
I
OUT = 300mA
Ground Pin Current VIN1,VIN2 VEN1 = High; VEN2 = Low; IOUT1 = 100µA to 300mA
EN1 = Low; VEN2 = High; IOUT2 = 100µA to 300mA
85
7
V
7
12
µA
Ground Pin Current VBIAS
IOUT1 = IOUT2 = 100µA to 300mA
30
46
µA
Ground Pin Current in
Shutdown
VEN ≤ 0.2V
0.01
1.0
µA
VIN Ripple Rejection
f = 1kHz; COUT = 1.0µF; CBYP = 0.01µF
f = 20kHz; COUT = 1.0µF; CBYP = 0.01µF
VOUT = 0V
65
40
dB
dB
Current Limit
350
550
30
mA
Output Voltage Noise
Enable
COUT=1µF, CBYP=0.01µF, 10Hz to 100kHz
µVRMS
Enable Input Voltage
Logic Low
0.2
V
V
Logic High
1.2
Enable Input Current
VIL ≤ 0.2V
0.02
0.2
1
1
µA
µA
µs
VIH ≥ 1.2V
Turn-on Time
COUT = 1µF; CBYP = 0.01µF
150
300
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. The maximum allowable power dissipation of any TA (ambient temperature) is PD(max) = TJ(max) – TA) / θJA. Exceeding the maximum allowable power
dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown.
4. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5kΩ in series with 100pF.
5. Specification for packaged product only.
M9999-070208-A
July 2008
3
Micrel, Inc.
MIC5313
Typical Characteristics
Power Supply
Power Supply
Ground Current (V )
IN
Rejection Ratio (V
)
Rejection Ratio (V
)
vs. Temperature
IN
BIAS
16
15
14
13
12
11
10
150mA
150mA
300mA
V
V
V
V
C
C
I
= V
+1V
OUT
IN
300mA
= 3.6V
= 1.5V
= 1.2V
= 1µF
BIAS
OUT1
OUT2
OUT
BYP
V
V
C
C
= V
+1V
V
V
C
C
= V
+1V
IN
OUT
IN
OUT
= 1.8V
= 1µF
= 1.8V
= 1µF
OUT
OUT
OUT
OUT
= 10nF
= 10nF
= 10nF
= I
OUT2
= 300mA
BYP
BYP
OUT1
0
0
10
100
1k
10k 100k 1M
10
100
1k
10k 100k 1M
-40 -20
0
20 40 60 80 100 120
FREQUENCY (Hz)
FREQUENCY (Hz)
TEMPERATURE (°C)
Ground Current (V
)
Ground Current (V
)
Ground Current (V )
IN
IN
BIAS
vs. Output Current
vs. Output Current
vs. Input Voltage
16.0
30
16
15
14
13
12
V
V
V
V
C
C
= V
+1V
IN
OUT
15.5
15.0
14.5
14.0
13.5
13.0
12.5
12.0
= 3.6V
= 1.5V
= 1.2V
= 1µF
BIAS
OUT1
OUT2
29
28
27
26
25
24
OUT
BYP
10mA
300mA
= 10nF
V
V
V
V
C
C
= V
+1V
IN
OUT
= 3.6V
= 1.5V
= 1.2V
= 1µF
V
V
V
C
C
= 3.6V
= 1.5V
= 1.2V
= 1µF
BIAS
OUT1
OUT2
BIAS
OUT1
OUT2
OUT
BYP
OUT
BYP
= 10nF
= 10nF
0
50 100 150 200 250 300
OUTPUT CURRENT (mA)
0
50 100 150 200 250 300
OUTPUT CURRENT (mA)
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
Dropout Voltage
vs. Temperature
Dropout Voltage
vs. Load Current
Output Voltage
vs. Temperature
120
100
80
60
40
20
0
0.10
0.09
0.08
0.07
0.06
0.05
0.04
0.03
0.02
0.01
0
1.70
1.65
1.60
1.55
1.50
1.45
1.40
1.35
1.30
300mA
V
C
= 1.5V
= 1µF
OUT
OUT
150mA
10mA
V
V
= V
+1V
IN
OUT
= 3.6V
BIAS
V
V
C
= 3.6V
= 1.8V
= 1µF
EN = V
BIAS
IN
V
C
= 1.5V
= 1µF
OUT
OUT
OUT
OUT
-40 -20
0
20 40 60 80 100 120
0
50 100 150 200 250 300
LOAD CURRENT (mA)
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
TEMPERATURE (°C)
Output Voltage
Output Voltage
Current Limit
vs. Output Current
vs. Input Voltage
vs. Input Voltage
1.70
1.65
1.60
1.55
1.50
1.45
1.40
1.35
1.30
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
650
630
610
590
570
550
530
510
490
470
450
1.8V
1.1V
V
= 5.5V
BIAS
V
V
V
= V
+1V
IN
OUT
I
= 10mA
OUT
V
V
C
= 5.5V
= 1.5V
= 1µF
= 3.6V
= 1.5V
= 1µF
BIAS
OUT
BIAS
OUT
C
C
= 1µF
= 1µF
OUT1
OUT2
C
OUT
OUT
0
50 100 150 200 250 300
OUTPUT CURRENT (mA)
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
INPUT VOLTAGE (V)
1.5
2
2.5
3 3.5 4 4.5 5 5.5
INPUT VOLTAGE (V)
M9999-070208-A
July 2008
4
Micrel, Inc.
MIC5313
Typical Characteristics (continued)
Output Noise
Spectral Density
1
0.1
0.01
C
C
= 1µF
= 10nF
OUT
BYP
0.001
10
100
1k
10k 100k 1M
FREQUENCY (Hz)
M9999-070208-A
July 2008
5
Micrel, Inc.
MIC5313
Functional Characteristics
M9999-070208-A
July 2008
6
Micrel, Inc.
MIC5313
Functional Diagram
THERMAL
LIMIT
REFERENCE
CBYP
QUICK START
EN1
LDO1
VIN1
VOUT1
CURRENT
LIMIT
VBIAS
LDO2
EN2
VOUT2
VIN2
GND
MIC5313 Block Diagram
M9999-070208-A
July 2008
7
Micrel, Inc.
MIC5313
Y5V dielectric capacitors change value by as much as
50% and 60%, respectively, over their operating
temperature ranges. To use a ceramic chip capacitor
with Y5V dielectric, the value must be much higher than
an X7R ceramic capacitor to ensure the same minimum
capacitance over the equivalent operating temperature
range.
Application Information
The MIC5313 is a high performance, dual low input
voltage, ultra-low dropout regulator designed for
applications requiring very fast transient response. The
MIC5313 utilizes two input supplies (VIN and VBIAS),
significantly reducing the dropout voltage.
The MIC5313 regulator is fully protected from damage
due to fault conditions, offering linear current limiting and
thermal shutdown.
Bypass Capacitor
A capacitor can be placed from the bypass pin-to-ground
to reduce the output voltage noise. The capacitor
bypasses the internal reference. A 0.01µF capacitor is
recommended for applications that require low-noise
outputs. The bypass capacitor can be increased, further
reducing noise and improving PSRR. Turn-on time
increases slightly with respect to the bypass
capacitance. A unique, quick-start circuit allows the
MIC5313 to drive a large capacitor on the bypass pin
without significantly slowing turn-on time.
Bias Supply Voltage
VBIAS, requiring relatively light current, provides power to
the control portion of the MIC5313. Bypassing on the
bias pin is recommended to improve performance of the
regulator during line and load transients. A 1µF ceramic
capacitor from VBIAS-to-ground is recommended to help
reduce the high frequency noise from being injected into
the control circuitry.
Input Supply Voltage
No-Load Stability
VIN1 and VIN2, provide the supply to power the LDOs
independently. The minimum input voltage is 1.7V
allowing conversion from low voltage supplies. The low
input voltage provides high efficiency by reducing the
input to output voltage step which minimizes the
regulator power loss.
Unlike many other voltage regulators, the MIC5313 will
remain stable and in regulation with no load. This is
especially important in CMOS RAM keep-alive
applications.
Enable/Shutdown
The MIC5313 is provided with dual active-high enable
pins that allow each regulator to be disabled
independently. Forcing the enable pin low disables the
regulator and sends it into a “zero” off-mode-current
state. In this state, current consumed by the regulator
goes nearly to zero. Forcing the enable pin high enables
the output voltage. The active-high enable pin uses
CMOS technology and the enable pin cannot be left
Input Capacitor
The MIC5313 is a high-performance, high bandwidth
device. Therefore, it requires a well-bypassed input
supply for optimal performance. A 1µF capacitor is
required from the input-to-ground to provide stability.
Low-ESR
ceramic
capacitors
provide
optimal
performance at a minimum of space. Additional high-
frequency capacitors, such as small-valued NPO
dielectric-type capacitors, help filter out high-frequency
noise and are good practice in any RF-based circuit.
X5R or X7R dielectrics are recommended for the input
capacitor. Y5V dielectrics loose most of their
capacitance over temperature and are therefore, not
recommended.
floating;
a
floating enable pin may cause an
indeterminate state on the output.
Thermal Considerations
The MIC5313 is designed to provide 300mA of
continuous current for both outputs in a very small
package. Maximum ambient operating temperature can
be calculated based upon the output current and the
voltage drop across the part. Given that the input voltage
is 1.8V, the output voltage is 1.5V for VOUT1, 1.0V for
VOUT2 and the output current = 300mA for each output.
The actual power dissipation of the regulator circuit can
be determined using the equation:
Output Capacitor
The MIC5313 requires an output capacitor of 1µF or
greater to maintain stability. The design is optimized for
use with low-ESR ceramic chip capacitors. High ESR
capacitors may cause high frequency oscillation. The
output capacitor can be increased, but performance has
been optimized for a 1µF ceramic output capacitor and
does not improve significantly with larger capacitance.
PD = (VIN – VOUT1) IOUT1 + (VIN – VOUT2) I OUT2 + VBIAS IGND
Because this device is CMOS and the ground current is
typically <100µA over the load range, the power
dissipation contributed by the ground current is < 1%
and can be ignored for this calculation.
X7R/X5R dielectric-type ceramic capacitors are
recommended
performance. X7R-type capacitors change capacitance
by 15% over their operating temperature range and are
the most stable type of ceramic capacitors. Z5U and
because
of
their
temperature
PD = (1.8V – 1.5V) × 300mA + (1.8V – 1.0V) × 300mA
PD = 0.33W
M9999-070208-A
July 2008
8
Micrel, Inc.
MIC5313
To determine the maximum ambient operating
temperature of the package, use the junction-to-ambient
thermal resistance of the device and the following basic
equation:
For example, when operating the MIC5313-FCYMT at
an input voltage of 1.8V and 300mA, loads at each
output with a minimum footprint layout, the maximum
ambient operating temperature TA can be determined as
follows:
⎛
⎞
TJ(MAX) − TA
⎜
⎟
0.33W = (125°C – TA)/(80°C/W)
TA = 98.6°C
PD(MAX)
=
⎜
⎝
⎟
⎠
θJA
TJ(max) = 125°C, the maximum junction temperature of
the die. The junction-to-ambient thermal resistance for
the minimum footprint, is θJA = 80°C/W.
For a full discussion of heat sinking and thermal effects
on voltage regulators, refer to the “Regulator Thermals”
section of Micrel’s Designing with Low-Dropout Voltage
Regulators handbook. This information can be found on
Micrel's website at:
Substituting PD for PD(max) and solving for the ambient
operating temperature will give the maximum operating
conditions for the regulator circuit.
http://www.micrel.com/_PDF/other/LDOBk_ds.pdf
The maximum power dissipation must not be exceeded
for proper operation.
M9999-070208-A
July 2008
9
Micrel, Inc.
MIC5313
MIC5313 Typical Application Circuit
U1
MIC5313-xxYMT
J1
VIN
1
2
VIN1
J7
LDO1
10
9
VIN2
VOUT1
VOUT2
J8
LDO2
J4
EN1
4
5
EN1
J5
EN2
EN2
C5
1µF/6.3V
C4
1µF/6.3V
J3
VBIAS
3
6
VBIAS
7
CBYP
C1
C2
C3
0.01µF/
6.3V
GND
1µF/6.3V
1µF/6.3V
J9
GND
J2
GND
Bill of Materials
Item
Part Number
Manufacturer
TDK(1)
Description
Qty
4
C1, C2, C4, C5
C1608X5R1A105K
Capacitor, 1µF Ceramic, 10V, X5R, Size 0603
Capacitor, 0.01µF, 50V, X7R, Size 0603
Open
C3
C6
U1
VJ0603Y103KXAAT
C1608X5R0J106M
MIC5313-xxYMT
Vishay(2)
TDK(1)
Micrel(3)
1
1
Low Voltage Dual 300mA LDO
1
Notes:
1. TDK: www.tdk.com
2. Vishay: www.vishay.com
3. Micrel, Inc.: www.micrel.com
M9999-070208-A
July 2008
10
Micrel, Inc.
MIC5313
PCB Layout Recommendations
Top Layer
Bottom Layer
M9999-070208-A
July 2008
11
Micrel, Inc.
MIC5313
Package Information
10-Pin 2mm × 2mm Thin MLF® (MT)
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http://www.micrel.com
The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its
use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer.
Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product
can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant
into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A
Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully
indemnify Micrel for any damages resulting from such use or sale.
© 2008 Micrel, Incorporated.
M9999-070208-A
July 2008
12
相关型号：
©2020 ICPDF网 联系我们和版权申明