Datasheet > AAT3170_08

AAT3170_08

更新时间： 2024-11-09 04:30:31

品牌	Logo	应用领域
ANALOGICTECH		驱动器闪光灯泵
页数	文件大小	规格书
15页	372K
描述
High Current LED Flash Driver Charge Pump IC

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PRODUCT DATASHEET

AAT3170

ChargePump^TM

High Current LED Flash Driver Charge Pump IC

General Description

Features

The AAT3170 is a high output current, high efficiency,

low noise, low profile charge pump DC/DC converter,

ideal for multi-function LED photo-flash applications

where solution cost, size, and efficiency are critical.

• V_INRange: 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 AS²Cwire

• 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

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 pre-

fer current matching. Each LED channel can be easily

programmed in 32 steps with a single GPIO output

through the AS²Cwire™ (Advanced Simple Serial

Control™) interface. This allows smooth transitions and

flexible adjustment of brightness in flash or other light-

ing 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_INand OUT), the AAT3170 is ideally

suited for small, battery-powered applications.

Applications

• Camera Phones

• Digital Still Cameras (DSCs)

• PDAs and Notebook PCs

• Smart Phones

The AAT3170 has a thermal management system to pro-

tect the device in the event of a short-circuit condition at

the output pin. Built-in soft-start circuitry prevents

excessive inrush current during start-up. The shutdown

feature disconnects the load from V_INand reduces quies-

cent current to less than 1.0μA.

The AAT3170 is available in the Pb-free, thermally-

enhanced, 12-pin 3x3mm TDFN package.

Typical Application

1μF

C1+

C1- C2+

C2-

2.7V to 5.5V

EN/SET

VIN

VOUT

Flash

LED 1

Flash

LED 2

C_IN

4.7μF

C_OUT

2.2μF

AAT3170

EN/SET

C_T

0.1μF

GND

w w w . a n a l o g i c t e c h . c o m

3170.2007.11.1.2

12 3 4 5 6 7...15

中文翻译

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与AAT3170_08相关器件

型号	品牌	获取价格	描述	数据表
AAT3170IWP-T1	AAT	获取价格	High Current LED Flash Driver Charge Pump IC
AAT3170IWP-T1	ANALOGICTECH	获取价格	High Current LED Flash Driver Charge Pump IC
AAT3171	ANALOGICTECH	获取价格	High Current, High Efficiency Charge Pump with Auto-Timer
AAT3171IWP-T1	ANALOGICTECH	获取价格	High Current, High Efficiency Charge Pump with Auto-Timer
AAT3172	AAT	获取价格	High Current LED Flash Driver Charge Pump IC
AAT3172	ANALOGICTECH	获取价格	High Current LED Flash Driver Charge Pump IC
AAT3172_08	ANALOGICTECH	获取价格	High Current LED Flash Driver Charge Pump IC
AAT3172IWP-T1	AAT	获取价格	High Current LED Flash Driver Charge Pump IC
AAT3172IWP-T1	ANALOGICTECH	获取价格	High Current LED Flash Driver Charge Pump IC
AAT3174	ANALOGICTECH	获取价格	High Current, High Efficiency Charge Pump

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