Datasheet > AAT3113

AAT3113

更新时间： 2024-11-18 04:30:31

品牌	Logo	应用领域
AAT		泵
页数	文件大小	规格书
15页	327K
描述
High Efficiency 1.5X Fractional Charge Pumps For White LED Applications

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中文翻译

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AAT3113 数据手册

AAT3113, AAT3114/14A

High Efficiency 1.5X Fractional Charge

Pumps For White LED Applications

™

ChargePump

General Description

Features

The AAT3113 and AAT3114/14A are low noise, con-

stant frequency charge pump DC/DC converters

that use fractional (1.5X) conversion to increase effi-

ciency in white LED applications. The devices can

be used to produce current levels up to 20mA for

each output from a 2.7V to 5.5V input. A low exter-

nal parts count (two 1µF flying capacitors and two

small bypass capacitors at V_INand OUT) makes

these devices ideally suited for small, battery-pow-

ered applications.

•

AAT3113: Four Outputs

AAT3114/14A: Six Outputs

20mA Full-Scale Current

Simple Serial Control (S²Cwire) Interface

— 32-Position Logarithmic Scale with Digital

Control

•

Low Noise Constant Frequency Operation

33% Less Input Current Than Doubler

Charge Pump

High Accuracy Brightness Matching

Small Application Circuit

Regulated Output Current

Automatic Soft Start

V_INRange: 2.7V to 5.5V

No Inductors

600kHz Switching Frequency

I_Q<1µA in Shutdown

Temperature Range: -40°C to 85°C

12-Pin TSOPJW Package (AAT3113)

16-Pin QFN Package (AAT3114/14A)

•

AnalogicTech’s Simple Serial Control™ (S²Cwire™)

interface is used to enable, disable, and set the

LED drive current for 32-level logarithmic scale LED

brightness control. AAT3113 and AAT3114/14A

devices have a thermal management system for

protection in the event of a short-circuit condition on

any of the output pins. Built-in soft-start circuitry

prevents excessive inrush current during start-up.

A high switching frequency enables the use of small

external capacitors. A low-current shutdown feature

disconnects the load from V_INand reduces quies-

cent current to less than 1µA. The AAT3113 pro-

vides four LED current source outputs, and the

AAT3114/14A provides six. The AAT3113 is avail-

able in a Pb-free 12-pin TSOPJW package, and the

AAT3114/14A is available in a Pb-free 16-pin QFN

package.

Applications

•

Programmable Current Source

White LED Backlighting

Typical Application

VIN

C1+

1μF

C1-

C2+

OUT

C_IN

C_OUT

1μF

V_BATTERY

AAT3114/14A

1μF

C2-

EN/SET

GND

3113.2006.07.1.9

12 3 4 5 6 7...15

中文翻译

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与AAT3113相关器件

型号	品牌	获取价格	描述	数据表
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,
AAT3113ITP-20-T1	AAT	获取价格	High Efficiency 1.5X Fractional Charge Pumps For White LED Applications
AAT3114	AAT	获取价格	High Efficiency 1.5X Fractional Charge Pumps For White LED Applications
AAT3114	ANALOGICTECH	获取价格	High Efficiency 1.5X Fractional Charge Pumps For White LED Applications
AAT3114A	AAT	获取价格	High Efficiency 1.5X Fractional Charge Pumps For White LED Applications
AAT3114A	ANALOGICTECH	获取价格	High Efficiency 1.5X Fractional Charge Pumps For White LED Applications

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