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16 channel white LED controller for LCD backlight

The AS3824 is recommended for new designs.


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.

Lifecycle status



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


LED backlighting for LCD - TV sets and monitors

Block Diagrams


Block Diagram


Typical Applications Diagram

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Name Date Version
AS3820 Datasheet (2.49 MB) 05/02/2019 1.1