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.

FEATUREs
◾ Family of Three Linear Current-Sink LED Drivers that
   Support 2, 4, or 6 LED Outputs
◾ Current Sink Driver for Each LED Output:
   – 30mA Maximum Output Current
   – 50mV Drop-out at 15mA IOUT
   – Better than 3% Matching between Channels
   – External RSET
◾ Single-Wire Digital Control Interface for Easy
   Programming
   – 32 Linear Steps of Dimming Control
◾ Less than 1µA Shut-Down Current
◾ Short-Circuit, Under-Voltage, and Thermal Protection
◾ Wide Input Voltage Range: 2.7 to 5.5V
◾ Small Form-Factor Packages:
   – FAN5622: 6-Pin Super SOT23
   – FAN5624: 10-Lead 1.4x1.8x0.55mm UMLP
   – FAN5626: 10-Lead 1.6x2.1x0.55mm MicroPak™ MLP

APPLICATIONs
◾ Mobile Handsets
◾ Mobile Internet Devices
◾ PMP and MP3 Players
◾ LCD Modules