Freescale Semiconductor is a global leader in the design and manufacture of embedded semiconductors for the automotive, consumer, industrial, networking and wireless markets. The company is based in Austin, Texas, and has design, research and development, manufacturing or sales operations in more than 30 countries.
This is an Evaluation Kit for the MC34844, a high efficiency LED driver for use in backlighting LCD displays from 10" to 27". Operating from supplies of 7V to 28V, the MC34844 is capable of driving more than 150 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. It also includes a Pulse Width Modulation(PWM) generator for LED dimming. The LEDs can be dimmed to one of 256 levels, programmed through the I2C/SM-bus interface. Therefore dimming ratios up to 65,000:1 (256:1 PWM, 256:1 Current DAC) can be supported. External PWM inputs may also be used. Multiple devices can have synchronized PWM frequencies for reduced picture noise. Audible noise is reduced through support of frequencies up to 25kHz (100Hz to 25kHz range).
This Kit Contains:
- Assembled and tested evaluation board/module in anti-static bag.
- Misc Cables (see packing list)
- CD-ROM containing:
- Supporting Documentation for featured device (may include datasheet, user's guides, app notes...etc)
- Schematic of evaluation board
- Bill-of-Material for evaluation board
- Instruction sheet for evaluation board
- Software and configuration files (if applicable)