Datasheet Summary
Freescale Semiconductor Technical Data
10 Channel LED Backlight Driver with Integrated Power Supply
Document Number: MC34844 Rev. 10.0, 8/2014
The 34844 is a SMARTMOS high efficiency, LED driver for use in backlighting LCD displays from 10" to 20"+. Operating from supplies of 7.0 to 28 V, the MC34844 is capable of driving up to 160 LEDs in 10 parallel strings. Current in the 10 strings is matched to within 2%, and can be programmed via the I2C/SM Bus interface.
The 34844 also includes a Pulse Width Monitor (PWM) generator for LED dimming. The LEDs can be dimmed to one of 256 levels, programmed through the I2C/SM Bus interface. Up to 65,000:1 (256:1 PWM, 256:1 Current DAC) dimming...