Datasheet > AA1700

AA1700

更新时间： 2022-12-20 00:54:36

品牌	Logo	应用领域
宏海微 - AGAMEM		驱动器
页数	文件大小	规格书
10页	228K
描述
Constant Current White LED driver

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AA1700 数据手册

AA1700

Agamem Microelectronics Inc.

PRELIMINARY

Constant Current White LED driver

■OVERVIEW

The AA1700 is a high frequency boost DC/DC converter with constant current output that drives white LEDs

or similar. The LED current is set with the external resistor. Soft start circuitry prevents excessive current

drawn from the supply during power on. Any number of LEDs can be connected in series as long as the

summed forward voltages do not lead to exceed the specified operating output voltage range. This IC works

with a wide operating supply range (1.8V to 15V) and low current consumption, is optimal for use in

high-efficiency white LED driver.

■FEATURES

• Drives Up to 8 LEDs in Series.

• Second or more string of LEDs can be added.

• Low current consumption: Typically 5.5 mA in operation, 1 µA or less in stand-by.

• PWM mode operation of the boost circuit (frequency range: 10 kHz to 1 MHz).

• Incorporates a soft start circuit and adjustable soft start time.

• Timer latch LED short-circuit protection circuit (SP).

• On/off control function.

• Available in an 8-pin TSSOP or SOP package.

■PIN Configuration

(TOP VIEW)

○

IN 1

SP 2

8 ER

7 CLK

6 GND

5 P0

VCC 3

CTL 4

■APPLICATIONS

• LCD Bias Supplies

• White LED Backlighting

• Handheld Devices

• Digital Cameras

• Portable Applications

©Copyright Agamem Microelectronics Inc.

www.agamem.com.tw

2007/1/22

12 3 4 5 6 7...10

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