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KIT34844AEPEVBE
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Evaluation Kit - MC34844, 10 Channel LED Backlight Driver with Integrated Power Supply.
- KIT34844AEPEVBE hardware
- Various Cables (2)
- Quick Reference Guide
- Analog Toolbox
- KIT34844AEPEVBE
Evaluation Kit - 34844, LED Backlight Driver, Power Supply
The KIT34844AEPEVBE Evaluation board supports the 34844/A, which is a high efficiency, LED driver for use in backlighting LCD displays from 10" to 20"+. Operating from supplies of 7.0 to 28V, the MC34844/A 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/A 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 ratio.
The integrated boost converter generates the minimum output voltage required to keep all LEDs illuminated with the selected current, providing the highest efficiency possible.
Product Details
Supported Devices
Power Management
LED Drivers
- MC34844: 10 Channel LED Backlight Driver with Power Supply
Features
Connectivity
- I²C/SM Bus interface
Power Management
- Input voltage of 7.0 to 28 V
- Up to 50 mA on the 34844 LED current per channel
- Up to 80 mA on the 34844A LED current per channel
- Boost output voltage up to 60 V, with Dynamic Headroom Control (DHC)
- 90% efficiency (DC:DC)
- 10 channel current mirror with ±2% current matching
- PWM frequency programmable or synchronizable from 100 to 25,000 Hz for the 34844
- PWM frequency programmable or synchronizable from 110 to 27,000 Hz for the 34844A
- 2.5 A integrated boost FET
Size
- 32-Ld 5x5x1.0 mm TQFN Package
Buy Options