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AS3820

16 channel white LED controller for LCD backlight

The AS3824 is recommended for new designs.

as3820_functional_block_diagram_-_web.jpg

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

● NRND

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

Applications

LED backlighting for LCD - TV sets and monitors

Block Diagrams

as3820_functional_block_diagram_-_web.jpg

Block Diagram

as3820_typical_applications_diagram_-_web.jpg

Typical Applications Diagram

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