10 Channel LED Backlight Driver with Power Supply

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Product Details

Block Diagram

Freescale MC34844 LED Driver Block Diagram

NXP<sup>&#174;</sup> MC34844 LED Driver Block Diagram

Features

Microcontrollers (MCUs)

  • Input voltage of 7 V to 28 V
  • Output voltage up to 60 V, with dynamic headroom control
  • 2.5 A  integrated boost
  • Up to 50 mA LED current per channel (34844)
  • Up to 80 mA LED current per channel (34844A)
  • 90% efficiency (DC:DC)
  • 10-channel current mirror with ±2% current matching
  • I2C/SMbus interface
  • 8-bit programmable current DAC
  • User programmable OVP
  • LED failure detection and OTP/OCP/UVLO lockout
  • 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
  • 32-Ld 5x5x0.8mm TQFN Pb-Free Packaging

Product Longevity Program

  • This product is included in the NXP Product Longevity Program ensuring a stable supply of products for your embedded designs. The MC34844 included in the 15-year program

Key Parametrics

  • Output Voltage (V)
    60
  • Output Current (A)
    2.5
  • Interface and Input Control
    I2C/I2C, Parallel/Parallel

Documentation

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Hardware

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