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LM27961 Datasheet Dual-Display White

Manufacturer: National Semiconductor (now Texas Instruments)

General Description

The LM27961 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 and 3 LEDs for a sub-display backlight.

Regulated internal current sources deliver excellent current and brightness matching in www.DataSheet4U.com all LEDs.

Overview

LM27961 Dual-Display White LED Driver with 3/2x Switched Capacitor Boost November 2004 LM27961 Dual-Display White LED Driver with 3/2x Switched Capacitor.

Key Features

  • n Drives 4 Individual Common-Anode LEDs with up to 20mA each for a Main Display Backlight n Drives 3 Individual Common-Cathode LEDs with up to 20mA each for a Sub-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).