CDRH3D16-3R3 [SKYWORKS]
850kHz 700mA Synchronous Buck DC/DC Converter; 850kHz的700毫安同步降压型DC / DC转换器
| 型号： | CDRH3D16-3R3 |
| 厂家： | 
SKYWORKS SOLUTIONS INC. |
| 描述： | 850kHz 700mA Synchronous Buck DC/DC Converter |
| 文件： | 总16页 (文件大小：1111K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
DATA SHEET
AAT1151
Features
General Description
The AAT1151 SwitchReg™ is a step-down switching con-
verter ideal for applications where high efficiency is
required over the full range of output load conditions.
The 2.7V to 5.5V input voltage range makes the AAT1151
ideal for single-cell lithium-ion/polymer battery applica-
tions. Capable of more than 700mA with internal
MOSFETs, the current-mode controlled IC provides high
efficiency using synchronous rectification. Fully inte-
grated compensation simplifies system design and low-
ers external parts count.
• VIN Range: 2.7V to 5.5V
• Up to 95% Efficiency
• High Initial Accuracy ±1%
• 110m RDS(ON) Internal Switches
• <1μA Shutdown Current
• 850kHz Switching Frequency
• Fixed VOUT or Adjustable VOUT ≥1.0V
• Integrated Power Switches
• Synchronous Rectification
• Current Mode Operation
• Internal Compensation
The device operates at a fixed 850kHz switching fre-
quency and enters Pulse Frequency Modulation (PFM)
mode for light load current to maintain high efficiency
across all load conditions.
• Stable with Ceramic Capacitors
• PFM for Optimum Efficiency for All Load Conditions
• Internal Soft Start
• Over-Temperature Protection
• Current Limit Protection
The AAT1151 is available in Pb-free MSOP-8 and QFN33-
16 packages and is rated over the -40°C to +85°C tem-
perature range.
• MSOP-8 and QFN33-16 Packages
• -40°C to +85°C Temperature Range
Applications
• Cellular Phones
• Digital Cameras
• MP3 Players
• Notebook Computers
• PDAs
• USB-Powered Equipment
• Wireless Notebook Adapters
Typical Application
INPUT
VP
10μF
FB
AAT1151
3.0μH
LX
ENABLE
VCC
100Ω
0.1μF
OUTPUT
2x 22μF
PGND
SGND
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DATA SHEET
AAT1151
850kHz 700mA Synchronous Buck DC/DC Converter
Pin Descriptions
Pin #
MSOP-8 QFN33-16 Symbol Function
Feedback input pin. This pin is connected to the converter output. It is used to set the output
of the converter to regulate to the desired value via an internal resistive divider. For an ad-
justable output, an external resistive divider is connected to this pin on the 1V model.
1
4
FB
Signal ground. Connect the return of all small signal components to this pin. (See board lay-
out rules.)
Enable input pin. A logic high enables the converter; a logic low forces the AAT1151 into shut-
2
3
5, 6
7
SGND
EN
down mode reducing the supply current to less than 1μA. The pin should not be left floating.
Bias supply. Supplies power for the internal circuitry. Connect to input power via low pass
filter with decoupling to SGND.
Input supply voltage for the converter power stage. Must be closely decoupled to PGND.
Connect inductor to these pins. Switching node internally connected to the drain of both high-
and low-side MOSFETs.
4
5
9
VCC
VP
10, 11, 12
13, 14, 15
6, 7
LX
Main power ground return pin. Connect to the output and input capacitor return. (See board
layout rules.)
Not internally connected.
8
1, 2, 3
PGND
NC
8, 16
EP
Exposed paddle (bottom); connect to PGND directly beneath package
Pin Configuration
MSOP-8
(Top View)
QFN33-16
(Top View)
1
8
PGND
FB
1
2
3
4
12
11
10
9
PGND
PGND
PGND
FB
VP
2
3
4
7
6
5
SGND
EN
LX
LX
VP
VP
VP
VCC
VCC
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DATA SHEET
AAT1151
850kHz 700mA Synchronous Buck DC/DC Converter
Absolute Maximum Ratings1
Symbol
Description
Value
Units
VCC, VP
VLX
VFB
VCC, VP to GND
LX to GND
FB to GND
6
V
V
V
-0.3 to VP + 0.3
-0.3 to VCC + 0.3
-0.3 to 6
VEN
EN to GND
V
TJ
VESD
Operating Junction Temperature Range
ESD Rating2 - HBM
-40 to 150
3000
°C
V
Thermal Characteristics3
Symbol
Description
Value
Units
MSOP-8
QFN33-16
MSOP-84
150
50
667
2.0
JA
Thermal Resistance
°C/W
mW
W
PD
Maximum Power Dissipation (TA = 25°C)
QFN33-165
Recommended Operating Conditions
Symbol
Description
Value
Units
T
Ambient Temperature Range
-40 to 85
°C
1. Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. Functional operation at conditions other than the operating conditions
specified is not implied. Only one Absolute Maximum Rating should be applied at any one time.
2. Human body model is a 100pF capacitor discharged through a 1.5k resistor into each pin.
3. Mounted on a demo board.
4. Derate 6.7mW/°C above 25°C.
5. Derate 20mW/°C above 25°C.
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DATA SHEET
AAT1151
850kHz 700mA Synchronous Buck DC/DC Converter
Electrical Characteristics1
VIN = VCC = VP = 5V, TA = -40°C to 85°C, unless otherwise noted. Typical values are at TA = 25°C.
Symbol Description
Conditions
Min Typ Max Units
VIN
VOUT
Input Voltage Range
Output Voltage Tolerance
2.7
-3.0
5.5
+3.0
2.5
V
%
VIN = VOUT + 0.2 to 5.5V, IOUT = 0 to 700mA
VIN Rising
VIN Falling
VUVLO
Under-Voltage Lockout
V
1.2
1.2
VUVLO(HYS)
IIL
IIH
IQ
ISHDN
ILIM
Under-Voltage Lockout Hysteresis
Input Low Current
Input High Current
Quiescent Supply Current
Shutdown Current
Current Limit
250
210
mV
μA
μA
μA
μA
A
VIN = VFB = 5.5V
VIN = VFB = 0V
No Load, VFB = 0V, VIN = 4.2V, TA = 25°C
VEN = 0V, VIN = 5.5V
TA = 25°C
1.0
1.0
300
1.0
RDS(ON)H
RDS(ON)L
High Side Switch On Resistance
Low Side Switch On Resistance
Efficiency
TA = 25°C
TA = 25°C
IOUT = 300mA, VIN = 3.5V
110
100
92
150
150
m
m
%
VOUT
(VOUT*VIN)
VOUT/VOUT Line Regulation
Load Regulation
VIN = 4.2V, ILOAD = 0 to 700mA
0.9
0.1
850 1200
0.6
%
VIN = 2.7V to 5.5V
TA = 25°C
%/V
kHz
V
V
°C
°C
FOSC
VEN(L)
VEN(H)
TSD
Oscillator Frequency
Enable Threshold Low
Enable Threshold High
Over-Temperature Shutdown Threshold
Over-Temperature Shutdown Hysteresis
600
1.4
140
15
THYS
1. The AAT1151 is guaranteed to meet performance specifications over the -40°C to +85°C operating range and is assured by design, characterization, and correlation with sta-
tistical process controls.
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DATA SHEET
AAT1151
850kHz 700mA Synchronous Buck DC/DC Converter
Typical Characteristics
Efficiency vs. Load Current
(VOUT = 2.5V; L = 4.2μH)
Efficiency vs. Load Current
(VOUT = 1.8V)
100
100
90
80
70
60
50
2.7V
90
80
3.6V
4.2V
70
60
50
1
10
100
1000
1
10
100
1000
Load Current (mA)
Output Current (mA)
No Load Supply Current vs. Input Voltage
Frequency vs. Input Voltage
300
890
880
870
860
850
T = 85°C
250
200
150
T = -40°C
T = 25°C
100
50
0
2.5
3
3.5
4
4.5
5
5.5
2.5
3
3.5
4
4.5
5
5.5
Input Voltage (V)
Input Voltage (V)
Output Voltage vs. Temperature
Load and Line Regulation
3.0
2.0
1.794
1.792
1.79
VIN = 4.2V
VIN = 3.6V
1.0
1.788
1.786
1.784
1.782
1.78
0.0
VIN = 2.7V
-1.0
-2.0
-3.0
-40
-20
0
20
40
60
80
100
1
10
100
1000
Temperature (°°C)
Load Current (mA)
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DATA SHEET
AAT1151
850kHz 700mA Synchronous Buck DC/DC Converter
Typical Characteristics
Output Ripple 1.8V, 50mA, VIN = 3.6V
Circuit of Figure 1
Switching Frequency vs. Temperature
1200
1000
800
600
400
200
0
20
10
1.4
1.2
1
0
-10
-20
-30
-40
-50
-60
0.8
0.6
0.4
0.2
0
-0.2
-40
-20
0
20
40
60
80
100
Time (2μs/div)
Temperature (°C)
Line Transient Response 1.8V, 50mA
Circuit of Figure 1
Output Ripple 1.8V, 0.7A, VIN = 3.6V
Circuit of Figure 1
20
3.5
3
4.4
120
100
80
10
0
4.2
4
2.5
2
-10
-20
-30
-40
-50
-60
3.8
3.6
3.4
3.2
3
60
1.5
1
40
20
0.5
0
0
-20
-40
-0.5
2.8
Time (20μμs/div)
Time (2μs/div)
Line Transient Response 1.8V, 0.7A
Circuit of Figure 1
Load Transient Response 50mA to 0.7A
VIN = 3.6V −− Circuit of Figure 1
40
20
3.5
3
4.4
120
100
80
4.2
4
0
2.5
2
3.8
3.6
3.4
3.2
3
60
-20
-40
-60
-80
-100
-120
1.5
1
40
20
0.5
0
0
-20
-40
-0.5
2.8
Time (20μμs/div)
Time (200μs/div)
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DATA SHEET
AAT1151
850kHz 700mA Synchronous Buck DC/DC Converter
Typical Characteristics
Output Ripple
Soft Start 1.8V, 0.7A, VIN = 3.6V
Circuit of Figure 1
Circuit of Figure 1
4
3
3.5
3
20
2
2.5
2
15
1
VIN = 2.7V
0
1.5
1
VIN = 3.6V
10
-1
-2
-3
-4
0.5
0
5
VIN = 4.2V
-0.5
0
1
10
100
1000
Time (200μs/div)
Output Current (mA)
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DATA SHEET
AAT1151
850kHz 700mA Synchronous Buck DC/DC Converter
Functional Block Diagram
VCC
VP = 2.7V to 5.5V
1.0V REF
CMP
DH
OP. AMP
FB
LOGIC
LX
DL
1MΩ
Temp.
Sensing
OSC
SGND
EN
PGND
The voltage loop crossover frequency and phase margin
are set by the output capacitor value only.
Operation
Control Loop
PFM/PWM Operation
The AAT1151 is a peak current mode buck converter. The
inner wide bandwidth loop controls the peak current of
the output inductor. The output inductor current is
sensed through the P-channel MOSFET (high side) and is
also used for short-circuit and overload protection. A
fixed slope compensation signal is added to the sensed
current to maintain stability. The loop appears as a volt-
age programmed current source in parallel with the out-
put capacitor.
Light load efficiency is maintained by way of PFM control.
The AAT1151 PFM control forces the peak inductor cur-
rent to a minimum level regardless of load demand. At
medium to high load demand, this has no effect on cir-
cuit operation and normal PWM controls take over. PFM
reduces the switching frequency at light loads, thus
reducing the associated switching losses.
Soft Start/Enable
The voltage error amplifier output programs the current
loop for the necessary inductor current to force a con-
stant output voltage for all load and line conditions. The
voltage feedback resistive divider is internal, dividing the
output voltage to the error amplifier reference voltage of
1.0V. The voltage error amplifier does not have the large
DC gain typical of most error amplifiers. This eliminates
the need for external compensation components, while
still providing sufficient DC loop gain for load regulation.
Soft start increases the inductor current limit point in
discrete steps when the input voltage or enable input is
applied. It limits the current surge seen at the input and
eliminates output voltage overshoot. When pulled low,
the enable input forces the AAT1151 into a low-power,
non-switching state. The total input current during shut-
down is less than 1μA.
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DATA SHEET
AAT1151
850kHz 700mA Synchronous Buck DC/DC Converter
current in the inductor can meet or exceed the current
limit point of the AAT1151. These conditions can tolerate
Power and Signal Source
Separate small signal ground and power supply pins
isolate the internal control circuitry from the noise asso-
ciated with the output MOSFET switching. The low pass
filter R1 and C2 in schematic Figure 1 filters the noise
associated with the power switching.
greater saturation in the inductor without degradation in
converter performance. Some inductors may meet the
peak and average current ratings yet result in excessive
losses due to a high DCR. Always consider the losses
associated with the DCR and its effect on the total con-
verter efficiency when selecting an inductor.
Current Limit and
For a 1.0A load and the ripple set to 40% at the maxi-
mum input voltage, the maximum peak-to-peak ripple
current is 280mA. The inductance value required is
2.84μH.
Over-Temperature Protection
For overload conditions, the peak input current is limit-
ed. As load impedance decreases and the output voltage
falls closer to zero, more power is dissipated internally,
raising the device temperature. Thermal protection com-
pletely disables switching when internal dissipation
becomes excessive, protecting the device from damage.
The junction over-temperature threshold is 140°C with
10°C of hysteresis.
VOUT
IO • k • FS
VOUT
VIN
⎛
⎞
⎠
L =
=
• 1 -
⎝
1.5V
1A • 0.4 • 850kHz
⎞
⎛
⎝
⎞
⎠
⎛
⎝
1.5V
4.2V⎠
• 1 -
= 2.84μH
Inductor
The output inductor is selected to limit the ripple current
to some predetermined value, typically 20% to 40% of
the full load current at the maximum input voltage.
Manufacturer’s specifications list both the inductor DC
current rating, which is a thermal limitation, and the
peak current rating, which is determined by the satura-
tion characteristics. The inductor should not show any
appreciable saturation under normal load conditions.
During overload and transient conditions, the average
The factor “k” is the fraction of full load selected for the
ripple current at the maximum input voltage. For ripple
current at 40% of the full load current, the peak current
will be 120% of full load. Selecting a standard value of
3.0μH gives 38% ripple current. A 3.0μH inductor select-
ed from the Sumida CDRH5D28 series has a 24m DCR
and a 2.4A DC current rating. At full load, the inductor
DC loss is 24mW, which amounts to a 1.6% loss in effi-
ciency.
U1
Efficiency vs. Load Current
(VOUT = 1.8V)
AAT1151-MSOP
2.7V-4.2V
1.8V
5
1
VP
FB
100
90
80
70
60
50
R1
2.7V
100
7
6
L1
R2
4
3
LX
LX
VCC
EN
3.3µH
100k
C1
3.6V
4.2V
10µF
C3, C4
2x22µF
C2
0.1µF
2
8
SGND PGND
C1
C3-C4 Murata 22µF 6.3V GRM21BR60J226ME39L X5R 0805
L1 Sumida CDRH3D16-4R7NC or CDRH3D16-3R3NC
Murata 10µF 6.3V X5R GRM42-6X5R106K6.3
1
10
100
1000
Load Current (mA)
Figure 1: AAT1151 Evaluation Board.
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DATA SHEET
AAT1151
850kHz 700mA Synchronous Buck DC/DC Converter
holdup during large load transitions. The output capaci-
tor RMS ripple current is given by:
Input Capacitor
The primary function of the input capacitor is to provide
a low impedance loop for the edges of pulsed current
drawn by the AAT1151. A low ESR/ESL ceramic capacitor
is ideal for this function. To minimize stray inductance,
the capacitor should be placed as close as possible to the
IC. This keeps the high frequency content of the input
current localized, minimizing radiated and conducted
EMI while facilitating optimum performance of the
AAT1151. Ceramic X5R or X7R capacitors are ideal for
this function. The size required will vary depending on
the load, output voltage, and input voltage source
impedance characteristics. A typical value is around
10μF. The input capacitor RMS current varies with the
input voltage and the output voltage. The equation for
the RMS current in the input capacitor is:
1
V
OUT · (VIN - VOUT
)
IRMS
=
·
L · FS · VIN
2 · 3
For a ceramic capacitor, the ESR is so low that dissipation
due to the RMS current of the capacitor is not a concern.
Tantalum capacitors with sufficiently low ESR to meet
output voltage ripple requirements also have an RMS
current rating well beyond that actually seen in this
application.
Layout
Figures 2 through 5 display the suggested PCB layout for
the AAT1151. The following guidelines should be used to
help ensure a proper layout.
VO
VIN
⎛
VO ⎞
VIN ⎠
IRMS = IO •
• 1 -
• The input capacitor (C1) should connect as closely as
possible to VP (Pin 5) and PGND (Pin 8).
⎝
• C2 and L1 should be connected as closely as possible.
The connection L1 to the LX node should be as short
as possible.
• The feedback trace (Pin 1) should be separate from
any power trace and connect as closely as possible to
the load point. Sensing along a high-current load trace
will degrade DC load regulation.
• The resistance of the trace from the load return to the
PGND (Pin 8) should be kept to a minimum. This will
help to minimize any error in DC regulation due to dif-
ferences in the potential of the internal signal ground
and the power ground.
• Low pass filter R1 and C3 provide a cleaner bias
source for the AAT1151 active circuitry. C3 should be
placed as closely as possible to SGND (Pin 2) and VCC
(Pin 4). See Figures 2 and 7.
The input capacitor RMS ripple current reaches a maxi-
mum when VIN is two times the output voltage where it
is approximately one half of the load current. Losses
associated with the input ceramic capacitor are typically
minimal and are not an issue. Proper placement of the
input capacitor can be seen in the reference design lay-
out in Figures 2 and 4.
Output Capacitor
Since there are no external compensation components,
the output capacitor has a strong effect on loop stability.
Lager output capacitance will reduce the crossover fre-
quency with greater phase margin. For the 1.5V 1A
design using the 4.1μH inductor, two 22μF capacitors
provide a stable output. In addition to assisting stability,
the output capacitor limits the output ripple and provides
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DATA SHEET
AAT1151
850kHz 700mA Synchronous Buck DC/DC Converter
Figure 2: MSOP Evaluation
Board Top Layer.
Figure 3: MSOP Evaluation
Board Bottom Layer.
Figure 4: QFN Evaluation Board Top Side.
Figure 5: QFN Evaluation Board Bottom Side.
45
VO+ 1.25V 0.7A
R3
R4=10kΩ
40
2.7V - 5.5V
AAT1151-1.0
2.55k 1%
10,11,12
4
35
30
25
20
15
10
5
VP
FB
R1 100
9
7
13,14,15
VCC
EN
LX
L1
R2
100k
C3
C2, C4
2x 22μF
3.3μH
5,6
1,2,3
R4
10kΩ 1%
C1
10μF
SGND PGND
0.1μF
GND
0
C1 Murata 10μF 6.3V X5R GRM42-6X5R106K6.3
C2, C4 Murata 22μF 6.3V GRM21BR60J226ME39L X5R 0805
L1 Sumida CDRH3D16-3R3 NC
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
Output Voltage (V)
Figure 6: R3 vs. VOUT for Adjustable Output
Figure 7: Adjustable Output Schematic.
Using the AAT1151-1.0V.
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DATA SHEET
AAT1151
850kHz 700mA Synchronous Buck DC/DC Converter
Once the total losses have been determined, the junction
temperature can be derived from the JA for the MSOP-8
Thermal Calculations
There are two types of losses associated with the
AAT1151 output switching MOSFET: switching losses and
conduction losses. Conduction losses are associated with
the RDS(ON) characteristics of the output switching device.
At the full load condition, assuming continuous conduc-
tion mode (CCM), a simplified form of the total losses is
given by:
package.
TJ = P · θJA + TAMB
Adjustable Output
For applications requiring an output other than the fixed
available, the 1V version can be programmed externally.
Resistors R3 and R4 of Figure 7 force the output to regu-
late higher than 1V. R4 should be 100 times less than the
1M internal resistance of the FB pin (recommended
10k). Once R4 is selected, R3 can be calculated. For a
1.25 volt output with R4 set to 10.0k, R3 is 2.55k.
IO2 · (RDS(ON)H · VO + RDS(ON)L · (VIN ·VO))
P =
VIN
F
I
·
O
V + I ) · V
+ (tSW
·
·
S
IN
Q
IN
where Iq is the AAT1151 quiescent current.
R3 = (VO - 1) · R4 = 0.25 · 10kΩ = 2.55kΩ
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DATA SHEET
AAT1151
850kHz 700mA Synchronous Buck DC/DC Converter
Design Example
Specifications
IOUT = 0.7A
IRIPPLE = 40% of Full Load at Max VIN
VOUT = 1.5V
VIN = 2.7V to 4.2V (3.6V nominal)
FS = 850kHz
TAM = 85°C
Maximum Input Capacitor Ripple
V
V
O
⎛
⎞
⎠
O
IRMS = IO ·
· 1-
⎝
= 0.35Arms, VIN = 2 · VO
V
V
IN
IN
P = esr · IRMS2 = 5mΩ · 0.352 A = 0.6mW
Inductor Selection
VOUT
IO ⋅ k ⋅ FS
⎛
VOUT
⎞
1.5
V
1.5V
⎞
4.2V
⎠
⎛
L =
⋅ 1 -
⎝
=
⋅ 1 -
⎝
= 4.05μH
⎠
VIN 0.7A ⋅ 0.4 ⋅ 850kHz
Select Sumida inductor CDRH3D16, 3.3μH, 63m, 1.8mm height.
⎛
⎞
1.5V
⎠
4.2V
VO
L ⋅ FS
VO
1.5
V
⎛
⎞
⎠
ΔI =
⋅ 1 -
⎝
=
⋅ 1-
= 340mA
⎝
VIN 3.3μH ⋅ 850kHz
ΔI
2
IPK = IOUT
+
= 0.7A + 0.17A = 0.87A
P = IO2 ⋅ DCR = (0.7)2 ⋅ 63mΩ = 31mW
Output Capacitor Ripple Current
VOUT · (VIN - VOUT
)
1
1.5V · (4.2V - 1.5V)
1
·
= 99mArms
IRMS
=
·
=
3.3μH · 850kHz · 4.2V
L · FS · VIN
2· 3
2· 3
Pesr = esr · IRMS2 = 5mΩ · 992 mA = 50μW
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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201991B
• Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 18, 2013
DATA SHEET
AAT1151
850kHz 700mA Synchronous Buck DC/DC Converter
AAT1151 Dissipation
IO2 • (RDS(ON)H • VO + RDS(ON)L • (VIN -VO))
PTOTAL
=
=
+ (tsw • FS • IO + IQ) • VIN
VIN
(0.7A)2 • (0.2Ω • 1.5V + 0.187Ω • (4.2V - 1.5V))
+ (20nsec • 850kHz • 0.7A + 0.3mA) • 4.2V = 0.145W
4.2V
TJ(MAX) = TAMB + ΘJA • PLOSS = 85°C + 150°C/W • 0.145W = 107°C (MSOP-8)
= 85°C + 50°C/W • 0.145W = 92°C (QFN33-16)
Max DC
Current
Size (mm)
L x W x H
Manufacturer
Part Number
Value
DCR (Ω)
Type
Taiyo Yuden
Toko
NPO5DB4R7M
A914BYW-3R5M-D52LC
CDRH5D28-3R0
4.7μH
3.5μH
3.0μH
4.2μH
4.1μH
4.7μH
4.7μH
3.3μH
1.4A
1.34A
2.4A
2.2A
1.95A
2.7A
2.2A
1.1A
0.038
0.073
0.024
0.031
0.057
0.041
0.025
0.063
5.9 x 6.1 x 2.8
5.0 x 5.0 x 2.0
5.7 x 5.7 x 3.0
5.7 x 5.7 x 3.0
5.7 x 5.7 x 2.0
5.0 x 5.0 x 4.7
6.3 x 6.3 x 4.7
3.8 x 3.8 x 1.8
Shielded
Shielded
Shielded
Shielded
Shielded
Non-Shielded
Shielded
Shielded
Sumida
Sumida
Sumida
Murata
Murata
Murata
CDRH5D28-4R2
CDRH5D18-4R1
LQH55DN4R7M03
LQH66SN4R7M03
CDRH3D16-3R3
Table 1: Surface Mount Inductors.
Manufacturer
Part Number
Value
Voltage
Temp. Co.
Case
Murata
Murata
Murata
Murata
GRM40 X5R 106K 6.3
GRM42-6 X5R 106K 6.3
GRM21BR60J226ME39L
GRM21BR60J106ME39L
10μF
10μF
22μF
10μF
6.3V
6.3V
6.3V
6.3V
X5R
X5R
X5R
X5R
0805
1206
0805
0805
Table 2: Surface Mount Capacitors.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
14
201991B
• Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 18, 2013
DATA SHEET
AAT1151
850kHz 700mA Synchronous Buck DC/DC Converter
Ordering Information
Output Voltage1
Package
Marking2
Part Number (Tape and Reel)3
1.0V (Adj. VOUT ≥ 1.0V)
QFN33-16
MSOP-8
QFN33-16
MSOP-8
JHXYY
JIXYY
JJXYY
NKXYY
AAT1151IVN-1.0-T1
AAT1151IKS-1.8-T1
AAT1151IVN-2.5-T1
AAT1151IKS-3.3-T1
1.8V
2.5V
3.3V
Skyworks Green™ products are compliant with
all applicable legislation and are halogen-free.
For additional information, refer to Skyworks
Definition of Green™, document number
SQ04-0074.
Package Information4
MSOP-8
4° 4°
1.95 BSC
0.60 0.20
PIN 1
0.254 BSC
0.155 0.075
3.00 0.10
10° 5°
0.075 0.075
0.65 BSC
0.30 0.08
All dimensions in millimeters.
1. Contact local sales office for custom options.
2. XYY = assembly and date code.
3. Sample stock is generally held on part numbers listed in BOLD.
4. The leadless package family, which includes QFN, TQFN, DFN, TDFN and STDFN, has exposed copper (unplated) at the end of the lead terminals due to the manufacturing
process. A solder fillet at the exposed copper edge cannot be guaranteed and is not required to ensure a proper bottom solder connection.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
15
201991B
• Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 18, 2013
DATA SHEET
AAT1151
850kHz 700mA Synchronous Buck DC/DC Converter
QFN33-16
0.230 0.050
Pin 1 Dot By Marking
Pin 1 Identification
1
5
C0.3
13
9
3.000 0.050
1.250 0.050
Top View
Bottom View
0.214 0.036
Side View
All dimensions in millimeters.
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Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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201991B
• Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 18, 2013
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