FTM Board Club
Fairchild Semiconductor
FEB421-001
4-channel linear LED driver.

The FAN5624 Evaluation Kit is convinient vehicle to evaluate the capabilities of the FAN5624, 4 channel linear LED driver.

The evaluation kit includes FAN5624 PCB and CD with data sheet and user Guide. The FAN5624 evaluation board, a completely assembled and tested surface mount board , provides probe access points to inputs and outputs so that electrical charecteristics and waveforms can be measured. The FAN5624 can drive 4 LED`s in parallel with a total output of 120mA.

4-channel linear LED driver. The FAN5624 is a four-channel current-sink linear LED driver used to backlight the main LCD display or keypad 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 FAN5624 linear LED driver 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 FAN5624 is available in a very small form-factor 10-lead UMLP packages.

Features

• Linear Current-Sink LED Driver that Supports 4 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
• Less than 1ľA Shut-Down Current
• Short-Circuit, Under-Voltage, and Thermal Protection
• Wide Input Voltage Range: 2.7 to 5.5V
• Small Form-Factor10-lead 1.4x1.8x0.55mm UMLP Package