January 2012

© 2010 Fairchild Semiconductor Corporation

www.fairchildsemi.com

FAN5622 / FAN5624 / FAN5626 • Rev. 1.0.2

FAN5622 / FAN5624 / FAN5626

Linear LED Drivers with Single-Wire Digital Interface

Features

Support 2, 4, or 6 LED Outputs

Programming

Applications

Description

The FAN5622, FAN5624, and FAN5626 are two-, four-, and

six-channel current-sink linear LED drivers used to backlight

the main LCD displays or keypads in mobile electronics, such

as cellular phone handsets.

A very low dropout of 50mV allows driving LEDs without any

inductors or switch capacitors. The brightness levels of the

LED outputs are programmed through single-wire digital

control interface. The user can program 32 linear dimming

steps and turn on and off the LEDs through this interface by

applying digital pulses.

The FAN562x family of linear LED drivers provides high

efficiency due to the low drop-out voltage of the LED driver.

Good matching between different channels of LED output is

provided across the entire 32 dimming steps. These LED

drivers also integrate short circuit, under-voltage, and thermal

protection to ensure for a more robust solution.

The FAN5622, FAN5624, and FAN5626 are available in very

small form-factor packages: 6-pin Super SOT23, 10-lead

UMLP, and 10-lead MicroPak™ MLP, respectively.

Figure 1. Typical Application of FAN5622

Ordering Information

Part Number

# of

Channels

Temperature

Range

Package

Packing

FAN5622SX

2

-40 to 85°C

6-Lead, SUPERSOT6, JEDEC MO-193, 1.6mm Wide

Tape and Reel

FAN5624UMPX

4

-40 to 85°C

10-Lead, Ultrathin Molded Leadless Package (UMLP)

Tape and Reel

FAN5626LX

6

-40 to 85°C

10-Lead ,Micropak ,JEDEC MO255, 1.6 X 2.1mm

Tape and Reel