AA1700 Agamem Microelectronic, AA1700 Datasheet

AA1700

Manufacturer Part Number

AA1700

Description

Constant Current White LED Driver

Manufacturer

Agamem Microelectronic

Datasheet

1.AA1700.pdf (10 pages)

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Download datasheet (216Kb)

PRELIMINARY

■OVERVIEW

■FEATURES

■PIN Configuration

■APPLICATIONS

©Copyright Agamem Microelectronics Inc.

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.

• 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.

• LCD Bias Supplies

• White LED Backlighting

• Handheld Devices

• Digital Cameras

• Portable Applications

Agamem Microelectronics Inc.

VCC

CTL

○

(TOP VIEW)

8 ER

7 CLK

6 GND

5 P0

AA1700

Constant Current White LED driver

www.agamem.com.tw

2007/1/22

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