Datasheet > AAT3340ITP-1-T1

AAT3340ITP-1-T1

更新时间： 2024-02-29 04:55:09

品牌	Logo	应用领域
ANALOGICTECH		接口集成电路驱动泵
页数	文件大小	规格书
14页	990K
描述
High Efficiency 1x/1.5x Charge Pump

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AAT3340ITP-1-T1 技术参数

生命周期：	Transferred	包装说明：	,
Reach Compliance Code：	unknown	风险等级：	5.84

AAT3340ITP-1-T1 数据手册

PRODUCT DATASHEET

AAT3340

ChargePump

High Efficiency 1x/1.5x Charge Pump

General Description

Features

•

The AAT3340 is a low-noise, constant-frequency charge

pump DC/DC converter that uses a dual-mode load switch

(1x) and fractional (1.5x) conversion to maximize effi-

ciency for white LED applications. The AAT3340 is capable

of driving 4 white LEDs at a total of 80mA from a single

2.7V to 5.5V input. The current sinks may be operated

individually or in parallel while driving higher-current

LEDs. A low external parts count (two 1µF flying capacitors

and two small 1µF capacitors at V_INand V_OUT) makes the

AAT3340 ideal for small battery-powered applications.

Dual-Mode (1x/1.5x) Charge Pump

Drives up to 4-Channel Backlight LEDs

32-Level Programmable Backlight Current (linear,

inverting)

Single-wire S²Cwire Control

•

Built-in Thermal Protection

Automatic Soft Start

-40°C to +85°C Temperature Range

TSOPJW-12 and TDFN33-12 Packages

Analogic Tech’s Simple Serial Control (S²Cwire) digital

interface is used to enable, disable and set current to

one of 32 levels for the LEDs.

Applications

•

Cellular and Smart Phones

Digital Still and Video Cameras

PDAs

Portable Devices

Portable Media Players

Other White LED Backlighting

The AAT3340 is equipped with built-in short-circuit and

over-temperature protection. The soft-start circuitry pre-

vents excessive inrush current at start-up and mode

transitions. The AAT3340 family is available in Pb-free,

space-saving TSOPJW and TDFN33 packages, and oper-

ates over the -40°C to +85°C ambient temperature

range.

Typical Application

C1+

C2+

1µF

C1-

1µF

C2-

V_BATTERY

3.6V

OUT

C_OUT

1µF

C_IN

1µF

AAT3340

BL1

BL2

BL3

BL4

EN/SET

S²Cwire Serial Control

GND

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

3340.2008.04.1.0

12 3 4 5 6 7...14

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