FAN5622 Datasheet, PDF (1/13 Pages) Fairchild Semiconductor – Linear LED Drivers with Single-Wire Digital Interface

January 2012
FAN5622 / FAN5624 / FAN5626
Linear LED Drivers with Single-Wire Digital Interface
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 I_OUT
– Better than 3% Matching between Channels
– External R_SET
 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
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
FAN5622SX
2
FAN5624UMPX
4
FAN5626LX
6
Temperature
Range
-40 to 85°C
-40 to 85°C
-40 to 85°C
Package
6-Lead, SUPERSOT6, JEDEC MO-193, 1.6mm Wide
10-Lead, Ultrathin Molded Leadless Package (UMLP)
10-Lead ,Micropak ,JEDEC MO255, 1.6 X 2.1mm
Packing
Tape and Reel
Tape and Reel
Tape and Reel
© 2010 Fairchild Semiconductor Corporation
FAN5622 / FAN5624 / FAN5626 • Rev. 1.0.2
www.fairchildsemi.com