AA1700 Datasheet Constant Current White LED driver

Manufacturer: Agamem Microelectronic

AA1700 constant current white led driver by Agamem Microelectronic - Datasheet Preview

Datasheet Details

Part number	AA1700
Manufacturer	Agamem Microelectronic
File Size	265.40 KB
Description	Constant Current White LED driver
Download	AA1700 Download (PDF)

General Description

S Pin No.

1 2 3 4 5 6 7 8 Symbol IN SP VCC CTL P0 GND CLK ER I/O I — — I O — — O Output voltage feedback pin AA1700 Constant Current White LED driver Description Soft start and short circuit protection setting Power supply pin ON/OFF control pin Output driver pin Ground pin Internal PWM frequency setting pin Error amplifier output pin BLOCK DIAGRAM Vcc 3 CLK 7 Regulator 0.5V 0.1V Error Amp.

+ Oscillator 5 + PWM COMP.

Overview

www.DataSheet4U.com Agamem Microelectronics Inc.

PRELIMINARY OVERVIEW AA1700 Constant Current White LED driver 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.

Key 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 packag.

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