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參數(shù)資料
| 型號： | AAT3170IWP-T1 |
| 廠商： | Advanced Analog Technology,lnc. |
| 英文描述： | High Current LED Flash Driver Charge Pump IC |
| 中文描述： | 高電流LED閃光燈驅(qū)動電荷泵芯片 |
| 文件頁數(shù)： | 1/15頁 |
| 文件大?。?/td> | 427K |
| 代理商： | AAT3170IWP-T1 |
AAT3170
High Current LED Flash Driver Charge Pump IC
3170.2006.11.1.1
1
ChargePump
General Description
The AAT3170 is a high output current, high effi-
ciency, low noise, low profile charge pump DC/DC
converter, ideal for multi-function LED photo-flash
applications where solution cost, size, and efficien-
cy are critical.
The dual charge pump in the AAT3170 is capable
of delivering 600mA output current. Two current-
controlled paths are available for users of dual
flash LEDs that prefer current matching. Each LED
channel can be easily programmed in 32 steps with
a single GPIO output through the AS
2
Cwire
(Advanced Simple Serial Control) interface. This
allows smooth transitions and flexible adjustment
of brightness in flash or other lighting modes.
The tri-mode (1X/1.5X/2X) operation of the internal
charge pump offers excellent power efficiency for
both flash and movie modes. Combined with a low
external parts count (two 1μF flying capacitors and
one small bypass capacitor at V
IN
and OUT), the
AAT3170 is ideally suited for small, battery-powered
applications.
The AAT3170 has a thermal management system to
protect the device in the event of a short-circuit con-
dition at the output pin. Built-in soft-start circuitry
prevents excessive inrush current during start-up.
The shutdown feature disconnects the load from V
IN
and reduces quiescent current to less than 1.0μA.
The AAT3170 is available in the Pb-free, thermally-
enhanced, 12-pin 3x3mm TDFN package.
Features
V
IN
Range: 2.7V to 5.5V
600mA Output Current
Tri-Mode 1X/1.5X/2X in Current Mode
Voltage Mode Operation: 1.5X, 200mA
Dual Regulated Current Sinks
Current Match Between Current Sinks
32 Current Steps Set by AS
2
Cwire
1μF Input, Output, and Flying Capacitors
<1.0μA of Shutdown
Small Application Circuit
No Inductors
Automatic Soft Start
12-Pin TDFN 3x3mm Package
-40°C to +85°C Temperature Range
Applications
Camera Phones
Digital Still Cameras (DSCs)
PDAs and Notebook PCs
Smart Phones
Typical Application
AAT3170
C
OUT
2.2μF
EN/SET
VIN
C1+
C1-
C2+
C2-
VOUT
F1
F2
2.7V to 5.5V
EN/SET
Flash
LED 1
C
T
0.1μF
Flash
LED 2
CT
GND
C
IN
4.7μF
C1
1μF
C2
1μF
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| AAT3171 | High Current, High Efficiency Charge Pump with Auto-Timer |
| AAT3171IWP-T1 | High Current, High Efficiency Charge Pump with Auto-Timer |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AAT3171 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:High Current, High Efficiency Charge Pump with Auto-Timer |
| AAT3171AIWP-T1 | 制造商:SKYWORKS SOLUTIONS INC 功能描述:800MA FLASH DRIVER CHPUMP 12TDFN TR |
| AAT3171IWP-T1 | 制造商:Skyworks Solutions Inc 功能描述:Voltage Regulators - Switching Regulators Hi Cur Hi Efficiency Charge Pump w/ Timer |
| AAT3172 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:High Current LED Flash Driver Charge Pump IC |
| AAT3172_08 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:High Current LED Flash Driver Charge Pump IC |
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