參數(shù)資料
型號(hào)： AAT3167ISN-T1
廠商： Advanced Analogic Technologies, Inc.
英文描述： High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications
中文描述： 高效率1x/1.5x/2x電荷泵白光LED應(yīng)用
文件頁(yè)數(shù)： 1/14頁(yè)
文件大?。?/td> 416K
代理商： AAT3167ISN-T1
General Description
The AAT3167 is a low noise, constant frequency
charge pump DC/DC converter that uses a tri-
mode load switch (1X), fractional (1.5X), and dou-
bling (2X) conversion to maximize efficiency for
white LED applications. The AAT3167 is capable of
driving five LEDs for a total of 135mA from a 2.7V
to 5.5V input. The current sinks may be operated
individually or in parallel for driving higher current
LEDs. A low external parts count (two 1μF flying
capacitors and two small 1μF capacitors at IN and
OUTCP) make this part ideally suited for small,
battery-powered applications.
AnalogicTech's AS
2
Cwire (Advanced Simple
Serial Control) serial digital input is used to
enable, disable, and set current for each LED with
a 16-level logarithmic scale plus four low-current
settings down to 115μA. For optimized efficiency,
low-current settings require only 50μA of house-
keeping current.
Each output of the AAT3167 is equipped with built-
in protection for output short circuit and auto-dis-
able for load short-circuit conditions. Built-in soft-
start circuitry prevents excessive inrush current
during start-up. Alow-current shutdown feature dis-
connects the load from the input and reduces qui-
escent current to less than 1μA.
The AAT3167 is available in a Pb-free, space-sav-
ing, thermally-enhanced, 16-pin 3x4mm TDFN or
16-pin 4x4mm QFN package and is rated over the
-40°C to +85°C temperature range.
Features
V
IN
Range: 2.7V to 5.5V
Fully Programmable Current with Single Wire
— 16-Step Logarithmic Scale
— 14/18/27mA Max Current
— Four Low-Current Settings Down to 115μA
— Low I
Q
(50μA) for Single-Channel, Low-
Current Mode
Tri-Mode 1X, 1.5X, 2X Charge Pump for
Maximum Efficiency and V
F
Coverage
Drives Up to Five LEDs
Individual Main-Sub (4-1) Group Control
No Inductors, Low Noise Operation
1MHz Constant Switching Frequency
Small Application Circuit
Built-In Thermal Protection
Built-In Auto-Disable for Open Circuit
Automatic Soft Start
I
Q
<1μA in Shutdown
TDFN34-16 or QFN44-16 Package
Applications
Color (RGB) Lighting
Programmable Current Sink
Transmissive LCD Display
White LED Backlighting
White Photo Flash for Digital Still Cameras
AAT3167
High Efficiency 1X/1.5X/2X Charge
Pump for White LED Applications
Typical Application
C1
1μF
C2
1μF
D1
D2
D3
D4
D5
OUT
C
C
IN
1μF
2.7V to 5.5V
EN/SET
IN
EN/SET
C1+
C1-
C2+
C2-
OUTCP
D1
D2
D3
D4
D5
GND
AAT3167
3167.2006.05.1.3
1
ChargePump
相關(guān)PDF資料
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AAT3169 制造商:ANALOGICTECH 制造商全稱(chēng):Advanced Analogic Technologies 功能描述:High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications
AAT3169_08 制造商:ANALOGICTECH 制造商全稱(chēng):Advanced Analogic Technologies 功能描述:High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications
AAT3169IFO-T1 制造商:Skyworks Solutions Inc 功能描述:Voltage Regulators - Switching Regulators 1X/1.5X/2X Charge Pump For WLED Apps 制造商:Skyworks Solutions Inc 功能描述:LED DRIVER IC
AAT3169ISN-T1 制造商:Skyworks Solutions Inc 功能描述:LED Lighting Drivers High Eff 1x/1.5x/2x Mode w/ PWM Control
AAT3169ITO-T1 制造商:Skyworks Solutions Inc 功能描述:LED DRIVER IC
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