Datasheet > AAT3169IFO-T1

AAT3169IFO-T1

更新时间： 2024-09-17 03:05:39

品牌	Logo	应用领域
AAT		泵
页数	文件大小	规格书
14页	438K
描述
High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications

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AAT3169IFO-T1 数据手册

AAT3169

High Efficiency 1X/1.5X/2X Charge

Pump for White LED Applications

™

ChargePump

General Description

Features

The AAT3169 is a low noise, constant frequency

charge pump DC/DC converter that uses a tri-mode

load switch (1X), fractional (1.5X), and doubling

(2X) conversion to maximize efficiency for white

LED applications. The AAT3169 is capable of driv-

ing six LEDs for a total of 180mA from a 2.7V to

5.5V input. The current sinks may be operated indi-

vidually or in parallel for driving higher current LEDs.

A low external parts count (two 1µF flying capacitors

and two small 1µF capacitors at IN and OUTCP)

make this part ideally suited for small, battery-pow-

ered applications.

•

V_INRange: 2.7V to 5.5V

Fully Programmable Current with Single Wire

— 16-Step Logarithmic Scale

— 15/20/30mA Max Current

— Four Low-Current Settings Down to 115µA

— Low I_Q(65µA) for Single-Channel, Low-

Current Mode

Tri-Mode 1X, 1.5X, and 2X Charge Pump for

Maximum Efficiency and V_FCoverage

Drives Up to Six LEDs

Individual Main-Sub (5-1) Group Control

No Inductors, Low Noise Operation

1MHz Constant Switching Frequency

Small Application Circuit

Built-In Thermal Protection

Built-In Auto-Disable for Open Circuit

Automatic Soft Start

I_Q<1µA in Shutdown

Thermally-Enhanced STDFN33-14 or

QFN44-16 Package

•

AnalogicTech's AS²Cwire™ (Advanced Simple Serial

Control™) serial digital input is used to enable, dis-

able, and set current for each LED with a 16-level

logarithmic scale plus four low-current settings down

to 115µA. For optimized efficiency, low-current set-

tings require only 65µA of housekeeping current.

Each output of the AAT3169 is equipped with built-

in protection for output short-circuit and auto-dis-

able for load short-circuit conditions. Built-in soft-

start circuitry prevents excessive inrush current

during start-up. A low-current shutdown feature dis-

connects the load from the input and reduces qui-

escent current to less than 1µA.

Applications

•

Color (RGB) Lighting

Programmable Current Sink

Transmissive Displays

White LED Backlighting

White Photo Flash for Digital Still Cameras

The AAT3169 is available in a Pb-free, space-sav-

ing, thermally-enhanced 16-pin 4x4mm QFN pack-

age or a low-profile 14-pin 3x3mm STDFN pack-

age and is rated over the -40°C to +85°C tempera-

ture range.

Typical Application

C1+

C1-

C2+

1µF

Main

Sub

C2-

OUTCP

C_OUT

1µF

2.7V to 5.5V

C_IN

1µF

AAT3169

EN/SET

3169.2006.08.1.2

12 3 4 5 6 7...14

中文翻译

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与AAT3169IFO-T1相关器件

型号	品牌	获取价格	描述	数据表
AAT3169ISN-T1	AAT	获取价格	High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications
AAT3169ISN-T1	ANALOGICTECH	获取价格	High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications
AAT3169ITO-T1	SKYWORKS	获取价格	LED Driver
AAT3169IWO-T1	SKYWORKS	获取价格	LED Driver
AAT3170	AAT	获取价格	High Current LED Flash Driver Charge Pump IC
AAT3170	ANALOGICTECH	获取价格	High Current LED Flash Driver Charge Pump IC
AAT3170_08	ANALOGICTECH	获取价格	High Current LED Flash Driver Charge Pump IC
AAT3170IWP-T1	AAT	获取价格	High Current LED Flash Driver Charge Pump IC
AAT3170IWP-T1	ANALOGICTECH	获取价格	High Current LED Flash Driver Charge Pump IC
AAT3171	ANALOGICTECH	获取价格	High Current, High Efficiency Charge Pump with Auto-Timer

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