LM27953 Datasheet White LED Driver

Manufacturer: National Semiconductor (now Texas Instruments)

LM27953 white led driver by National Semiconductor (now Texas Instruments) - Datasheet Preview

Datasheet Details

Part number	LM27953
Manufacturer	National Semiconductor (now Texas Instruments)
File Size	706.74 KB
Description	White LED Driver
Download	LM27953 Download (PDF)

General Description

The LM27953 is a charge-pump-based white-LED driver that is ideal for mobile phone display backlighting.

It is intended to drive 4 LEDs for a main phone display backlight.

Regulated internal current sources deliver excellent current and brightness matching in all LEDs.

Overview

November 2004 www.DataSheet4U.com LM27953 White LED Driver with Four LED Current Sinks and 3/2x Switched Capacitor Boost LM27953 White LED Driver with Four LED Current Sinks and 3/2x Switched Capacitor.

Key Features

n Drives 4 Individual Common-Anode LEDs with up to 20mA each for a Main Display Backlight n Independent Resistor-Programmable Current Setting n Excellent Current and Brightness Matching n High-Efficiency 3/2x Charge Pump n Extended Li-Ion Input: 2.7V to 5.5V n PWM Brightness Control: 100Hz - 1kHz n 18-bump Thin Micro SMD Package: (2.1mm x 2.4mm x 0.6mm).

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