Datasheet > AAT3114ISN-20-T1

AAT3114ISN-20-T1

更新时间： 2024-02-15 14:19:19

品牌	Logo	应用领域
ANALOGICTECH		泵
页数	文件大小	规格书
14页	233K
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

AAT3113/4

High Efficiency 1.5X Fractional Charge

Pumps For White LED Applications

™

ChargePump

General Description

Features

The AAT3113/4 are low noise, constant frequency

charge pump DC/DC converters that use fractional

(1.5X) conversion to increase efficiency in White

LED applications. The devices can be used to pro-

duce current levels up to 20mA for each output from

a 2.7V to 5.5V input. Low external parts counts (two

1µF flying capacitors and two small bypass capaci-

tors at V_IN, and OUT) make the AAT3113/4 ideally

suited for small battery-power applications.

•

White LED Backlighting

AAT3113 - 4 Outputs

AAT3114 - 6 Outputs

20mA Full Scale Current

32 Position Logarithmic Scale with Digital

Control

•

Simple Serial Control™ (S Cwire™) interface

Low Noise Constant Frequency Operation

33% Less Input Current Than Doubler

Charge Pump

AnalogicTech™’s Simple Serial Control™

•

High Accuracy Brightness Matching

Small Application Circuit

(S Cwire™) interface is used to enable, disable

and set the LED drive current for a 32 level loga-

rithmic scale LED brightness control. The

AAT3113/4 have a thermal management system to

protect the device 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. High switching frequency enables

the use of small external capacitors. A low current

shutdown feature disconnects the load from V_IN

and reduces quiescent current to less than 1µA.

The AAT3113 provides 4 LED current source out-

puts, and the AAT3114 provides 6. The AAT3113/4

are available in 16-pin quad QFN packages, and

the AAT3113 is also available in the 12-pin

TSOPJW package.

Regulated Output Current

Automatic Soft-Start

VIN Range: 2.7V to 5.5V

No Inductors

600kHz Switching Frequency

Iq < 1µA in Shutdown

Temperature Range -40 to 85°C.

16-Pin QFN, 12-Pin TSOPJW Package

Applications

•

White LED Backlighting

Programmable Current Source

Typical Application

V_IN

C1+

1µF

C1-

C2+

V_OUT

C_IN

1µF

C_OUT

1µF

V_BATTERY

AAT3114

C2-

EN/SET

GND

3113.2004.07.1.4

12 3 4 5 6 7...14

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