Datasheet > AAT3114ISN-20-T1

AAT3114ISN-20-T1

更新时间： 2024-02-21 11:24:42

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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AAT3114ISN-20-T1 技术参数

是否Rohs认证：	符合	生命周期：	Transferred
包装说明：	QCCN, LCC16,.16SQ,25	Reach Compliance Code：	unknown
风险等级：	5.73	JESD-30 代码：	S-PQCC-N16
湿度敏感等级：	1	端子数量：	16
最高工作温度：	85 °C	最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	QCCN
封装等效代码：	LCC16,.16SQ,25	封装形状：	SQUARE
封装形式：	CHIP CARRIER	电源：	3.5 V
认证状态：	Not Qualified	子类别：	Display Drivers
标称供电电压：	3.5 V	表面贴装：	YES
温度等级：	INDUSTRIAL	端子形式：	NO LEAD
端子节距：	0.635 mm	端子位置：	QUAD
Base Number Matches：	1

AAT3114ISN-20-T1 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

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