This EVB shows the functionality of MC34844 setup with variable operation parameters. The MC34844 is a high efficiency, LED driver for use in backlighting LCD displays from 10” to 20”+ can operate in this demo board from a supply of 24V. The device is capable of driving up to 160 LEDs in 10 parallel strings. The current through these 10 channels is matched to within ±2% and can be programmed via the I2C/SM-bus interface or using direct PWM input.
For evaluation purposes this Demo Board includes a USB to I2C bridge that allows control the EVB via USB communication though a PC. All these control fuctions are gathered in a friendly GUI (Graphical Unit Interface) also provided along with the Demo Board.
This evaluation board allows the user to test this device on its three operational modes: Master Mode, Slave Mode and Stand Alone Mode by facilitating access to all pins and providing different possible component configuration.
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Features
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Four Layer Board
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Low Noise Design
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Top Layer Placement
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USB to I2C Interface included
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Terminal Block and Connector for the 10 LED channels
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Terminal Blocks for Input Voltage, Output Voltage, and Control Signals (EN, A0SEN, CK, PWM)
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Jumper Configuration and resitors arrays for adjusting signals .
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Test Holes for SW Current Measurements
Featured Documentation
- MC34844: 10 Channel LED Backlight Driver with Integrated Power Supply
- MC34844FS: 10-Channel LED Backlight Driver with Integrated Power Supply
- KT34844UG: KIT34844EPEVME User's Guide
- KTLEDBKLT16UG: LED Backlight 16 Channel Evaluation Board Kit User's Guide
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)
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