Overview

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

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

AS3820 Functional Block Diagram
AS3820 Typical Applications Diagram
AS3820 Functional Block Diagram
AS3820 Typical Applications Diagram
  • 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% at VDAC = 250mV

Applications

  • LED backlighting for LCD - TV sets and monitors

Documentation

= Featured Documentation
Type Title Date
Datasheet
AS3820 Datasheet
Log in to Download PDF 2.48 MB
1 item

Design & Development

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

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Diagram of ECAD Models

Product Options

    Processing table
    Pkg. Type
    Carrier Type
    Buy / Sample
    Part Number
    AS3820A-ZQFT
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    Samples Available
    		 48 QFN Tape & Reel Get Samples,
    AS3820E-ZQFT
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    view_in_ar
    Samples Available
    		 QFN48 7x7 Get Samples,
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