AAT1217_202050B.pdf

DATA SHEET
AAT1217
600mA, 1.2MHz, Micropower Synchronous Step-Up Converter
General Description
Features
The AAT1217 is a high efficiency, synchronous, fixed
frequency, step-up converter designed for single-cell or
dual-cell alkaline, NiMH, or NiCd battery-powered applications. The high 1.2MHz switching frequency and completely integrated control circuitry minimize the total
solution footprint area while maintaining excellent regulation, ripple, and transient response throughout the full
load range.
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Light load mode operation and low quiescent current
allow the AAT1217 to maintain high efficiency performance for light load conditions. With a 1.2A peak inductor current limit, the AAT1217 is capable of delivering
100mA to the load from a single AA cell, 400mA from
dual AA cells, or up to 500mA from a single-cell lithiumion battery. The AAT1217 has a 0.85V start-up voltage
with operation down to 0.5V.
The AAT1217 is available in a Pb-free, space-saving low
profile (1mm) 6-pin TSOT23 or 6-pin SOT23 package
and is rated over the -40°C to +85°C ambient temperature range.
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VIN Operation Range: 0.5V to VOUT
VOUT Range: 2.5V to 5.5V
100mA Output from a Single AA Cell Input
400mA Output from a Dual AA Cell Input
500mA Output from a Single Li+ Cell Input
High Efficiency: Up to 93% Efficiency
Low Start-Up Voltage: 0.85V Typical
Internal Synchronous Rectifier
▪ VOUT ≤ 4.5V: No External Schottky Diode
Fixed Frequency Pulse Width Modulation (PWM) CurrentMode Control Scheme with Internal Compensation
1.2MHz Fixed Switching Frequency
1.2A Current Limit
Light Load Mode Operation
Over-Current Protection
EMI Reduction Anti-Ringing Control Circuitry
Low Shutdown Current: <1.0μA
-40°C to +85°C Ambient Temperature Range
Low Profile (1mm) TSOT23-6 or SOT23-6 Package
Applications
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Cellular and Smart Phones
Digital Still and Video Cameras
Microprocessors and DSP Core Supplies
MP3 Player
Portable Instruments
Wireless and DSL Modems
Typical Application
L1
4.7μH
L1
4.7μH
SW
VIN
0.85V
VIN
C IN
4.7μF
R3
1MΩ
VOUT
3.3V,100 mA
SW
VIN
0.85V
VOUT
AAT1217-1.2
VIN
R1
1.02MΩ
FB
SHDN
GND
R2
604k Ω
C OUT
4.7μF
C IN
4.7μF
R3
1MΩ
VOUT
3.3V, 100 mA
VOUT
AAT1217-3.3
C OUT
4.7μF
FB
SHDN
GND
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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1
DATA SHEET
AAT1217
600mA, 1.2MHz, Micropower Synchronous Step-Up Converter
Pin Descriptions
Pin #
Symbol
1
2
SW
GND
3
FB
4
5
6
SHDN
VOUT
VIN
Function
Power Switch Pin. Ties to the drains of the PMOS synchronous rectifier and the NMOS switch.
Ground Pin
Feedback Input Pin. Connect FB to the center point of the external resistor divider. The feedback threshold
voltage is 1.23V.
Shutdown Signal Input. Logic high enables the IC. Logic low disables the IC. Shutdown current is <1μA.
Power Output Pin. Tied to the source of the PMOS synchronous rectifier.
Power Supply Input. Must be closely decoupled to GND, Pin 2, with a 4.7μF or greater ceramic capacitor.
Pin Configuration
TSOT23-6/SOT23-6
(Top View)
2
SW
1
6
VIN
GND
2
5
VOUT
FB
3
4
SHDN
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DATA SHEET
AAT1217
600mA, 1.2MHz, Micropower Synchronous Step-Up Converter
Absolute Maximum Ratings1
Symbol
Description
VIN
VSW
VFB, VSHDN
VOUT
TA
TSTORAGE
TLEAD
TJ
Input Supply Voltage
SW Voltage
FB, SHDN Voltages
VOUT Voltage
Operating Ambient Temperature Range2
Storage Temperature Range
Lead Temperature (Soldering, 10s)
Operating Junction Temperature Range2
Value
Units
-0.3 to 6
-0.3 to 6
-0.3 to 6
-0.3 to 6
-40 to 85
-65 to 150
300
-40 to 150
V
V
V
V
°C
°C
°C
°C
Thermal Information3
Symbol
Description
JA
Maximum Thermal Resistance
PD
Maximum Power Dissipation
Value
TSOT23-6
SOT23-6
TSOT23-6
SOT23-6
190
150
526
667
Units
°C/W
mW
1. Absolute Maximum Ratings are those values beyond which the life of a device may be impaired.
2. TJ is calculated from the ambient temperature TA and power dissipation PD according to the following formula: TJ = TA + PD x JA.
3. Mounted on an FR4 board.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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DATA SHEET
AAT1217
600mA, 1.2MHz, Micropower Synchronous Step-Up Converter
Electrical Characteristics1
VIN = 1.2V, VOUT = 3.3V, TA = 25°C, unless otherwise noted.
Symbol
VIN
VOUT
VFB
Description
Conditions
Minimum Start-Up Voltage
Minimum Operating Voltage
Output Voltage Range
IOUT = 1mA
VSHDN = VIN
Output Voltage Accuracy3
Reference Voltage
VOUT/
VOUT/VIN
Reference Voltage Line
Regulation
VOUT/
VOUT/IOUT
Reference Voltage Load
Regulation
IQ
ILNMOS
ILPMOS
RDS(ON)L
RDS(ON)H
ICL
t(ICL)
Quiescent Current (Shutdown)
Quiescent Current (Active)
NMOS Switch Leakage
PMOS Switch Leakage
NMOS Switch ON Resistance
PMOS Switch ON Resistance
IOUT = 10mA; TA = -40°C to
+85°C
TA = -40°C to +85°C
VIN = 1.2V to 2.4V, IOUT = 10mA,
VOUT = 3.3V
VIN = 2.4V to 4.2V, IOUT =
10mA,VOUT = 5.0V
VIN = 1.2V, IOUT = 10mA to
100mA, VOUT = 3.3V
VIN = 3.6V, IOUT = 10mA to
400mA, VOUT = 5.0V
VSHDN = 0
Measured on VOUT, VSHDN = VIN
VSW = 5V
VSW = 0V
VOUT = 3.3V
VOUT = 5V
VOUT = 3.3V
VOUT = 5V
NMOS Current Limit
Current Limit Delay to Output
Min
Typ
Max
0.85
0.5
2.5
1
0.65
5.5
-4
+4
%
1.268
V
1.192
1.230
%/V
0.003
%/mA
0.004
750
0.01
300
0.1
0.1
0.35
0.30
0.60
0.55
1200
40
VFB = 1.15V, TA = -40°C to +85°C
80
85
FOSC
Switching Frequency
SHDN Input Low
SHDN Input High
SHDN Input Current
TA = -40°C to +85°C
0.9
1.2
TSD
Thermal Shutdown
1
500
5
5
Hysteresis
0.01
160
20
μA
μA

mA
ns
%
1.5
0.35
MHz
1
μA
1. Specifications over the temperature range are guaranteed by design, characterization, and correlation with statistical process controls.
2. Not including the current into internal resistance divider.
3. For fixed 3.3V and 5.0V output voltage version. The adjustable output voltage is guaranteed by reference voltage accuracy.
4
μA

1.00
VSHDN = 5.5V
V
0.4
Maximum Duty Cycle
ISHDN
V
0.2
DMAX
VSHDN
Units
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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V
°C
DATA SHEET
AAT1217
600mA, 1.2MHz, Micropower Synchronous Step-Up Converter
Typical Characteristics
Efficiency vs. Output Current
Efficiency vs. Output Current
(VOUT = 3.3V; TA = 25°
°C)
(VOUT = 5V; TA = 25°
°C)
100
100
VIN = 2.4V
Efficiency (%)
80
90
70
VIN = 1.5V
60
50
VIN = 1.2V
40
30
40
30
10
100
VIN = 1.5V
50
20
10
VIN = 1.2V
60
10
1
0
0.1
1000
1
Output Current (mA)
1000
(VOUT = 5V; TA = 25°
°C)
3.5
5.2
Output Voltage (V)
Output Voltage (V)
100
Output Voltage vs. Output Current
(VOUT = 3.3V; TA = 25°
°C)
3.4
VIN = 2.4V
VIN = 1.5V
VIN = 1.2V
3.3
3.2
0
100
200
300
400
500
600
5.1
VIN = 1.2V
VIN = 3.6V
4.9
4.8
0
100
200
300
400
500
600
Output Current (mA)
Minimum Start-Up Voltage vs. Output Current
Maximum Output Current vs. Input Voltage
(VOUT = 3.3V; TA = 25°
°C)
(L = 4.7µH; TA = 25°°C)
1000
1.5
Maximum Output
Current (mA)
1.35
1.2
1.05
0.9
0.75
0.6
VIN = 2.4V
VIN = 1.5V
5
Output Current (mA)
Start-Up Voltage (V)
10
Output Current (mA)
Output Voltage vs. Output Current
3.1
VIN = 2.4V
70
20
0
0.1
VIN = 3.6V
80
Efficiency (%)
90
0
20
40
60
80
100
120
140
Output Current (mA)
160
180
200
800
VOUT = 3.3V
600
VOUT = 5V
400
200
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
Input Voltage (V)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
202050B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 19, 2013
5
DATA SHEET
AAT1217
600mA, 1.2MHz, Micropower Synchronous Step-Up Converter
Typical Characteristics
Output Voltage vs. Temperature
No Load Input Current vs. Input Voltage
1000
3.35
900
3.34
800
Output Voltage (V)
Input Current (µA)
(VOUT = 3.3V; TA = 25°°C; No Load)
700
600
500
400
300
200
100
3.33
3.32
3.31
3.3
3.29
3.28
3.27
3.26
0
1
1.5
2
2.5
3
3.25
-50
0
25
50
Anti-Ringing Operation at SW
Light Load Mode Operation
(VIN = 2.4V; VOUT = 5V; IOUT = 20mA)
(VIN = 1.8V; VOUT = 3.3V; IOUT = 5mA)
VSW
2V/div
-25
Temperature (°°C)
Input Voltage (V)
VSW
2V/div
0V
0V
VOUT
50mV/div
(AC)
Time (1ms/div)
Time (400ns/div)
Load Transient Response
(VIN = 1.5V; VOUT = 3.3V; CFF = 100pF)
IOUT
50mA/div
100mA
40mA
0A
VOUT
100mV/div
(AC)
Time (100µs/div)
6
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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100
DATA SHEET
AAT1217
600mA, 1.2MHz, Micropower Synchronous Step-Up Converter
Functional Block Diagram
+
VIN
VIN
Start-Up
Oscillator
Slope
Compensation
L1
VOUT
GOOD
2.3V
–
MUX
SW
VOUT
VOUT
Current
Sense
+
CIN
–
COUT
Antiringing
Control
To VIN
Bandgap
1.23V
+
+
R2
PWM
Logic
Comp
EA
FB
R1
–
–
GND
SHDN
Shutdown
Control
Functional Description
The AAT1217 is a synchronous step-up DC-DC converter.
It utilizes internal MOSFET switches to achieve high efficiency over the full load current range. It operates at a
fixed switching frequency of 1.2MHz, and uses the slope
compensated current mode pulse width modulation
(PWM) architecture. The device can operate with an input
voltage below 1V; the typical start-up voltage is 0.85V.
Synchronous Rectification
The AAT1217 integrates a synchronous rectifier to
improve efficiency as well as to eliminate the need for an
external Schottky diode. The synchronous rectifier is used
to reduce the conduction loss contributed by the forward
voltage of an external Schottky diode. The synchronous
Oscillator
1.2MHz
rectifier is realized by a P-channel MOSFET (PMOS) with
gate control circuitry that incorporates relatively complicated timing concerns. An external Schottky diode is
required when the output voltage is greater than 4.5V.
Low Voltage Start-Up
The AAT1217 can start-up with supply voltages down to
0.85V. During start-up, the internal low voltage start-up
circuitry controls the internal NMOS switch. The AAT1217
leaves the start-up mode once VOUT exceeds 2.3V. An
internal comparator (VOUT GOOD) monitors the output
voltage and places the chip into normal operation once
VOUT exceeds 2.3V. The AAT1217’s control circuitry is
biased by VIN during start-up and biased by VOUT once
VOUT exceeds VIN. When VOUT exceeds VIN, the AAT1217’s
operation will be independent of VIN.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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7
DATA SHEET
AAT1217
600mA, 1.2MHz, Micropower Synchronous Step-Up Converter
Current Mode Operation
The AAT1217 is based on a slope compensated current
mode PWM control topology. It operates at a fixed frequency of 1.2MHz. At the beginning of each clock cycle,
the main switch (NMOS) is turned on and the inductor
current starts to ramp. After the maximum duty cycle or
the sense current signal equals the error amplifier (EA)
output, the main switch is turned off and the synchronous switch (PMOS) is turned on. This control topology
features cycle-by-cycle current limiting which can prevent the main switch from overstress and the external
inductor from saturating.
Light Load Mode Operation
At very light load, the AAT1217 automatically switches
into light load mode operation to improve efficiency.
During this mode, the PWM control will skip some pulses
to maintain regulation. If the load increases and the output voltage drops, the device will automatically switch
back to normal PWM mode and maintain regulation.
Anti-Ringing Control
An anti-ringing circuitry is included to remove the high
frequency ringing that appears on the SW pin when the
inductor current goes to zero. In this case, a ringing on
the SW pin is induced due to remaining energy stored in
parasitic components of switch and inductor. The antiringing circuitry clamps the voltage internally to the battery voltage and therefore dampens this ringing.
Device Shutdown
When SHDN is set logic high, the AAT1217 is put into
active mode operation. If SHDN is set logic low, the
device is put into shutdown mode and consumes less
than 1μA of current. After start-up, the internal circuitry
is supplied by VOUT, however, if shutdown mode is
enabled, the internal circuitry will be supplied by the
input source again.
Application Information
Adjustable Output Voltage
An external resistor divider is used to set the output voltage. The output voltage of the switching regulator (VOUT)
is determined by the following equation:
R1⎞
⎛
VOUT = 1.23V · 1 + R2
⎝
⎠
Table 1 lists the recommended resistor values for particular output voltage settings.
VOUT
R1()
R2()
3.3V
5.0V
1.02M
1.02M
604k
332k
Table 1: Resistor Selection for
Output Voltage Setting.
Fixed Output Voltage
The AAT1217 has two fixed output voltage options: 3.3V
and 5V. An internal resistor divider is connected to the
FB pin inside the package which eliminates the need for
external feedback resistors. When designing with the
fixed output voltage option, remember to leave the FB
pin open; otherwise the output voltage will be affected.
However, a feed-forward capacitor can still be added
between the FB and VOUT pins to enhance the control
loop performance.
Inductor Selection
The high switching frequency of 1.2MHz allows for small
surface mount inductors. For most applications, the
AAT1217 operates with inductors from 2.2μH to 10μH.
Use the following equations to select the proper inductor
value for a particular application condition:
ΔIL
IPEAK = IDC + 2
IDC =
8
IOUT · VOUT
η · VIN
ΔIL =
VIN · D
VOUT - VIN
; D=
L · FSW
VOUT
ΔIL =
VIN · (VOUT - VIN)
L · FSW · VOUT
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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DATA SHEET
AAT1217
600mA, 1.2MHz, Micropower Synchronous Step-Up Converter
IOUT · VOUT
VIN · (VOUT - VIN)
IPEAK = η · V
+ 2L · F · V
IN
SW
OUT
IPEAK
IDC
ΔIL
IOUT
VOUT
VIN
η
D
FSW
L
Peak Inductor Current
DC Component (Average) of the Inductor Current
Peak-Peak Inductor Ripple Current
Output (Load) Current
Output Voltage
Input Voltage
AAT1217 Efficiency (consult the performance graphs
in the “Typical Characteristics” section of the data
sheet)
Steady-State Duty Cycle
Switching Frequency
Inductor Value
For a given chosen inductor value and application conditions make sure the peak inductor current does not
exceed the maximum current rating of the selected vendor’s inductor. For optimum load transient and efficiency, low DCR inductors should be selected. Table 2 lists
some typical surface mount inductors that are suitable
for typical AAT1217 applications.
Input Capacitor
A surface mount 4.7μF or greater, X5R or X7R, ceramic
capacitor is suggested for the input capacitor. The input
capacitor provides a low impedance loop for the edges
of pulsed current drawn by the AAT1217. Low ESR/ESL
Part Number
Sumida CDH28D11/S
Coiltronics SD3112
TDK VLF3012A
Sumida CR43
Sumida CDRH4D28
Toko D53LC
X7R and X5R ceramic capacitors are 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 EMI and input voltage ripple. Always examine the ceramic capacitor DC voltage coefficient characteristics to get the proper value. For example, the
capacitance of a 10μF, 6.3V, X5R ceramic capacitor with
5.0V DC applied is actually about 6μF.
A laboratory test set-up typically consists of two long
wires running from the bench power supply to the evaluation board input voltage pins. The inductance of these
wires, along with the low-ESR ceramic input capacitor,
can create a high Q network that may affect converter
performance. This problem often becomes apparent in
the form of excessive ringing in the output voltage during load transients which can produce errors in loop
phase and gain measurements. Since the inductance of
a short printed circuit board (PCB) trace feeding the
input voltage is significantly lower than the power leads
from the bench power supply, most actual applications
do not exhibit this problem. In applications where the
input power source lead inductance cannot be reduced
to a level that does not affect the converter performance, a high ESR tantalum or aluminum electrolytic
capacitor should be placed in parallel with the low ESR,
ESL bypass input ceramic capacitor. The introduction of
the high ESR capacitor dampens the high Q network and
stabilizes the AAT1217.
L (μH)
Max DCR (m)
Rated DC Current (A)
2.2
4.7
10
2.2
4.7
10
2.2
4.7
10
2.2
4.7
10
2.2
4.7
10
4.7
10
123
238
431
140 (typ)
246 (typ)
446 (typ)
100
190
410
71.2
108.7
182
31.3
72
128
45
90
1.15
0.75
0.53
1.12
0.8
0.55
1
0.74
0.49
1.75
1.15
1.04
2.04
1.32
1
1.87
1.33
Size WxLxH (mm)
3x3.3x1.2
3.1x3.1x1.2
2.8x2.6x1.2
4.3x4.8x3.5
5.0x5.0x3.0
5.0x5.0x3.0
Table 2: Typical Surface Mount Inductors.
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9
DATA SHEET
AAT1217
600mA, 1.2MHz, Micropower Synchronous Step-Up Converter
Output Capacitor
Load Disconnect in Shutdown
The output capacitor limits the output ripple and provides holdup during large load transitions. A 4.7μF to
10μF, X5R or X7R, ceramic capacitor is suggested for the
output capacitor. Typically the recommended capacitor
range provides sufficient bulk capacitance to stabilize the
output voltage during large load transitions and has the
ESR and ESL characteristics necessary for low output
voltage ripple.
In conventional synchronous step-up converters, a conduction path exists from input to output through the
backgate (body diode) of the P-channel MOSFET during
shutdown. Special application circuitry can disconnect the
load from the battery during shutdown (see Figure 1).
In addition, the output voltage droop during load transient is dominated by the capacitance of the ceramic
output capacitor. During a step increase in load current,
the ceramic output capacitor alone supplies the load current until the loop responds. Within several switching
cycles, the loop responds and the inductor current
increases to match the load current demand. Larger output capacitor values help to reduce the voltage droop
during large load current transients.
External Diode Selection
An external Schottky diode is required when the output
voltage is above 4.5V. The Schottky diode is optional for
output voltages  4.5V, but can improve efficiency by
about 2% to 3%.
10
PCB Layout Guidance
The AAT1217 typically operates at 1.2MHz. This is a considerably high frequency for DC-DC converters. PCB
layout is important to guarantee satisfactory performance. It is recommended to make traces of the power
loop, especially where the switching node is involved, as
short and wide as possible. First of all, the inductor, input
and output capacitor should be as close as possible to
the device. Feedback and shutdown circuits should avoid
the proximity of large AC signals involving the power
inductor and switching node. The optional rectifier diode
(D1 in Figure 1) can improve efficiency and alleviate the
stress on the integrated MOSFETs. The diode should also
be close to the inductor and the chip to form the shortest
possible switching loop. While the two-layer PCB shown
in Figures 2 and 3 is enough for most applications, large
and integral multi-layer ground planes are ideal for high
power applications. Large areas of copper have lower
resistance and help to dissipate heat. The converter’s
ground should join the system ground to which it supplies power at one point only. Figure 1 is the schematic
for a highly efficient load disconnect application circuit
for the AAT1217. An example PCB layout for the AAT1217
is shown in Figures 2 and 3.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
202050B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 19, 2013
DATA SHEET
AAT1217
600mA, 1.2MHz, Micropower Synchronous Step-Up Converter
D1
MBR0520
L1
4.7μH
1
VIN
0.85V
SW
6
VIN
VOUT
5
R4
510kΩ
AAT1217
CIN
4.7μF
4
FB
SHDN
3
VOUT
3.3V,100mA
Q1
Si2305 DS
R1
1.02MΩ
COUT
4.7μF
R2
604kΩ
GND
2
R3
510kΩ
Q2
2N3904
ON/OFF Control
Figure 1: AAT1217 High Efficiency Load Disconnect Application Circuit.
Figure 2: AAT1217 Evaluation Board Layout
Example Top Layer.
Figure 3: AAT1217 Evaluation Board Layout
Example Bottom Layer.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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11
DATA SHEET
AAT1217
600mA, 1.2MHz, Micropower Synchronous Step-Up Converter
Ordering Information
Output Voltage1
Package
Marking2
Part Number (Tape and Reel)3
Adj.
Fixed 3.3V
Fixed 5.0V
Fixed 3.3V
TSOT23-6
TSOT23-6
TSOT23-6
SOT23-6
VZXYY
WAXYY
WBXYY
3CXYY
AAT1217ICA-1.2-T1
AAT1217ICA-3.3-T1
AAT1217ICA-5.0-T1
AAT1217IGU-3.3-T1
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 Information
TSOT23-6
0.40 ± 0.10
0.95 BSC
0.127 BSC
1.60 BSC
2.80 BSC
Detail "A"
End View
Top View
1.00 ± 0.10
0.25 BSC
2.90 BSC
1.00
+10°
-0°
0.45 ± 0.15
0.000
+ 0.100
- 0.000
Side View
Detail "A"
All dimensions in millimeters.
1. Please contact sales for other voltage options.
2. XYY = Assembly and Date Code.
3. Sample stock is generally held on part numbers listed in BOLD.
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Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
202050B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 19, 2013
DATA SHEET
AAT1217
600mA, 1.2MHz, Micropower Synchronous Step-Up Converter
SOT23-6
2.85 ± 0.15
1.90 BSC
2.80 ± 0.20
1.20 ± 0.25
0.15 ± 0.07
4° ± 4°
1.10 ± 0.20
0.075 ± 0.075
1.575 ± 0.125
0.95 BSC
10° ± 5°
0.40 ± 0.10 × 6
0.60 REF
0.45 ± 0.15
GAUGE PLANE
0.10 BSC
All dimensions in millimeters.
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Skyworks, the Skyworks symbol, and “Breakthrough Simplicity” are trademarks or registered trademarks of Skyworks Solutions, Inc., in the United States and other countries. Third-party brands and names are for
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Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
202050B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 19, 2013
13