Datasheet > AAT3351IWP-T1

AAT3351IWP-T1

更新时间： 2024-01-18 02:00:42

品牌	Logo	应用领域
ANALOGICTECH		/
页数	文件大小	规格书
17页	2077K
描述
Interface Circuit

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技术参数
数据手册

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AAT3351IWP-T1 技术参数

是否Rohs认证：	符合	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：	5.82	模拟集成电路 - 其他类型：	SWITCHED CAPACITOR REGULATOR
峰值回流温度（摄氏度）：	NOT SPECIFIED	处于峰值回流温度下的最长时间：	NOT SPECIFIED
Base Number Matches：	1

AAT3351IWP-T1 数据手册

PRODUCT DATASHEET

AAT3351

ChargePump

High Efficiency 1x/1.5x Charge Pump

General Description

Features

The AAT3351 is a low-noise, constant-frequency charge

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

switch (1x) and fractional (1.5x) charge pump to maxi-

mize efficiency for white LED applications. The AAT3351

is capable of driving 4 white LEDs at a total of 120mA

from 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

• Drives up to 4 LEDs at up to 30mA, each

• Automatic Switching Between 1x and 1.5x Modes

• 1MHz Switching Frequency

• Linear LED Output Current Control

Single-wire, S²Cwire Interface

32-step

• ±10% LED Output Current Accuracy

• 3% LED Output Current Matching

• Low-Current Shutdown Mode

• Automatic Soft-Start

▪

capacitors and two small 1μF capacitors at V_INand V_OUT

)

makes the AAT3351 ideal for small battery-powered

applications.

• TSOPJW-14 and TDFN33-12 Packages

Analogic Tech’s S²Cwire™ serial digital input 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 AAT3351 is equipped with built-in short-circuit pro-

tection. The soft-start circuitry prevents excessive inrush

current at start-up and mode transitions. The AAT3351

family is available in Pb-free, space-saving TSOPJW and

TDFN33 packages, and operates over the -40°C to

+85°C ambient temperature range.

Typical Application

C1+

C2+

1µF

C2-

1µF

C1-

V_BATTERY

3.6V

OUT

C_OUT

1µF

C_IN

1µF

AAT3351

EN/SET

S²Cwire Serial Control

GND

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

3351.2009.06.1.1

12 3 4 5 6 7...17

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