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AAT3170IWP-T1

更新时间： 2024-01-17 11:24:10

品牌	Logo	应用领域
ANALOGICTECH		驱动器驱动程序和接口接口集成电路闪光灯泵
页数	文件大小	规格书
15页	455K
描述
High Current LED Flash Driver Charge Pump IC

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技术参数
数据手册

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AAT3170IWP-T1 技术参数

生命周期：	Obsolete	包装说明：	,
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.84
Is Samacsys：	N	接口集成电路类型：	LED DISPLAY DRIVER
Base Number Matches：	1

AAT3170IWP-T1 数据手册

AAT3170

High Current LED Flash Driver Charge Pump IC

™

ChargePump

General Description

Features

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.

•

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 prefer 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 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_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

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.

Typical Application

1µF

C1+

C1- C2+

C2-

2.7V to 5.5V

VIN

VOUT

Flash

LED 1

Flash

LED 2

C_IN

4.7µF

C_OUT

2.2µF

AAT3170

EN/SET

C_T

0.1µF

GND

3170.2006.10.1.0

12 3 4 5 6 7...15

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