AS3820

AS3820 LED Driver

16 channel white LED controller for LCD backlight

The AS3820 is a 16 channels precision LED for use in LCD-backlight panels. Dynamic power feedback controls the external power supply to guarantee best efficiency.

Build in safety features include thermal shutdown as well as open and short LED detection. The device is programmable via serial interface.

Key Features

  • 16 Channel LED driver
  • Output voltage only limited by external transistor
  • Output current only limited by external transistor
  • Linear current setting using 10-bit DAC
  • Current accuracy ±0.5% @ VDAC=250mV
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Applications

  • LED backlighting for LCD - TV sets and monitors

Block Diagrams

Block Diagram
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Typical Applications Diagram

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