Datasheet > AAT3112

AAT3112

更新时间： 2024-11-17 22:38:55

品牌	Logo	应用领域
ANALOGICTECH		闪光灯泵
页数	文件大小	规格书
16页	354K
描述
500mA High Efficiency Charge Pump for White LED Flash Applications

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AAT3112 数据手册

AAT3112

500mA High Efficiency Charge Pump

for White LED Flash Applications

™

ChargePump

General Description

Features

The AAT3112 is a member of AnalogicTech's Total

Power Management IC™ (TPMIC™) family. It is a

dual voltage doubling charge pump that provides a

regulated output voltage. It operates with an input

voltage range of 2.7 to 5.0 volts. The device can

deliver a constant 200mA output load current and up

to 500mA of pulsed current. The 500mA peak cur-

rent capability of the AAT3112 makes it ideal for

white LED flash applications. A low external parts

count (two 1µF flying capacitors and two small

capacitors at V_INand V_OUT) makes the AAT3112 ide-

ally suited for small battery-powered applications.

•

Input Voltage Range:

•

AAT3112-5.0: 2.7V to 5.0V

AAT3112-4.5: 2.7V to 4.5V

•

Up to 500mA Peak Output Current

200mA Continuous Output Current

I_Q<1µA in Shutdown

Regulated 4.5V or 5.0V Output

26µA of Quiescent Current

Small Application Circuit

Automatic Soft Start

No Inductors

Short-Circuit/Over-Temperature Protection

16-Pin 3x3mm QFN Package

Temperature Range: -40°C to +85°C

The AAT3112 has a thermal management system

to protect the device in the event of a short-circuit

condition at the output pin. Built-in soft-start circuit-

ry prevents excessive inrush current during start-

up. A high charge pump switching frequency

enables the use of very small external capacitors.

A low current shutdown feature disconnects the

load from V_INand reduces quiescent current to less

than 1µA. The AAT3112 is available in a 16-pin

3x3mm QFN package and is rated over the -40°C

to +85°C temperature range.

Applications

•

General-Purpose High-Current Boost Supply

White LED Backlighting

White LED Photo Flash

Typical Application

C1 = 1µF

C2 = 1µF

C2⁺C2^-

V_OUT1

C1⁺C1^-

V_IN

C_IN

C_OUT

V_OUT2

AAT3112

EN1

EN2

Enable Light

Enable Flash

R_B

GND

3112.2004.12.1.2

12 3 4 5 6 7...16

中文翻译

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与AAT3112相关器件

型号	品牌	获取价格	描述	数据表
AAT3112_07	ANALOGICTECH	获取价格	500mA High Efficiency Charge Pump for White LED Flash Applications
AAT3112IVN-4.5-T1	ANALOGICTECH	获取价格	500mA High Efficiency Charge Pump for White LED Flash Applications
AAT3112IVN-5.0-T1	ANALOGICTECH	获取价格	500mA High Efficiency Charge Pump for White LED Flash Applications
AAT3113	ANALOGICTECH	获取价格	High Efficiency 1.5X Fractional Charge Pumps For White LED Applications
AAT3113	AAT	获取价格	High Efficiency 1.5X Fractional Charge Pumps For White LED Applications
AAT3113_08	ANALOGICTECH	获取价格	High Efficiency 1.5X Fractional Charge Pumps For White LED Applications
AAT3113ISN-20-T1	ANALOGICTECH	获取价格	High Efficiency 1.5X Fractional Charge Pumps For White LED Applications
AAT3113ITP	ANALOGICTECH	获取价格	High Efficiency 1.5X Fractional Charge Pumps For White LED Applications
AAT3113ITP-20-T1	ANALOGICTECH	获取价格	High Efficiency 1.5X Fractional Charge Pumps For White LED Applications
AAT3113ITP-20-T1	SKYWORKS	获取价格	LED Driver, PDSO12,

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