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AAT3114AISN-20-T1

更新时间： 2024-02-21 08:50:08

品牌	Logo	应用领域
ANALOGICTECH		驱动程序和接口接口集成电路泵
页数	文件大小	规格书
15页	1591K
描述
High Efficiency 1.5X Fractional Charge Pumps For White LED Applications

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AAT3114AISN-20-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
接口集成电路类型：	LED DISPLAY DRIVER	Base Number Matches：	1

AAT3114AISN-20-T1 数据手册

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PRODUCT DATASHEET

AAT3113,AAT3114/14A

ChargePump

High Efficiency 1.5X Fractional Charge Pumps For White LED Applications

General Description

Features

The AAT3113 and AAT3114/14A are low noise, constant

frequency charge pump DC/DC converters that use frac-

tional (1.5X) conversion to increase efficiency 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 external parts count (two 1µF flying

capacitors and two small bypass capacitors at V_INand

OUT) makes these devices ideally suited for small, bat-

tery-powered 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™) inter-

face 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 ther-

mal 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 provides

four LED current source outputs, and the AAT3114/14A

provides six. The AAT3113 is available in a Pb-free

12-pin TSOPJW package, and the AAT3114/14A is avail-

able in a Pb-free 16-pin QFN package.

Applications

• Programmable Current Source

• White LED Backlighting

Typical Application

VIN

C1+

VIN

C1+

1µF

C1-

C2+

OUT

C1-

C2+

OUT

C_IN

1µF

C_OUT

1µF

V_BATTERY

C_IN

1µF

C_OUT

1µF

AAT3114/14A

C2-

1µF

V_BATTERY

AAT3113

C2-

EN/SET

GND

EN/SET

GND

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

3113.2008.05.1.10

12 3 4 5 6 7...15

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