LM3570 - Low Noise White LED Driver System

Product Overview

National Semiconductor

Part number	LM3570
Manufacturer	National Semiconductor
File Size	352.79 KB
Description	Low Noise White LED Driver System
Datasheet	LM3570 Datasheet
Additional preview pages of the LM3570 datasheet.

The LM3570 device provides a complete LED driver solution for wireless handsets and other portable devices using a display and keypad.

n 2.7V to 5.5V Input Voltage n Regulated Output Voltage (VOUT = 4.35V) n Regulated IDx with ± 0.3% matching between constant current outputs n High Efficiency 3/2 Boost function n Drives one, two, or three white LEDs with no bias resistor losses n Drives auxiliary keypad LEDS in voltage mode n Up to 80mA total output current n Active-High Enable n Active-High PWM Control Pin for independent control of current sources n Very small solution size n 1µA(max) shutdown current n 500kHz switching frequ.

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Other Datasheets by National Semiconductor

Published: Mar 22, 2005 |