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AS3834 Datasheet 4 Channel High-precision Led Controller

Manufacturer: austriamicrosystems

Overview: austriamicrosystems AG is now ams AG The technical content of this austriamicrosystems datasheet is still valid. Contact information: Headquarters: ams AG Tobelbaderstrasse 30 8141 Unterpremstaetten, Austria Tel: +43 (0) 3136 500 0 e-Mail: ams_sales@ams. Please visit our website at .ams.

Datasheet Details

Part number AS3834
Manufacturer austriamicrosystems
File Size 1.54 MB
Description 4 channel high-precision LED controller
Datasheet AS3834-austriamicrosystems.pdf

General Description

The AS3834 is a 4 channel high precision LED controller with PWM inputs for driving external bipolar transistors in LCD-backlight panels, optimized for 2D and 3D operation.

The integrated step-up controller provides the necessary output voltage for the LED string supply.

The SMPS feedback control optimizes the power efficiency by adjusting the LED string supply voltage.

Key Features

  • include under-voltage and thermal shutdown as well as open and short LED detection. 2 Key Features 4 channel LED controller Step-up controller optimized for 2D/3D mode Supply voltage range: 12V to 50V Output current up to 270mA per channel Absolute current accuracy +/- 0.8% Channel to channel accuracy+/- 0.6% 4 separated PWM inputs Open LED detection and disconnect Short LED protection and auto-turnoff Undervoltage shutdown Temperature shutdown Temperature supervision of external BJT BJT Beta c.

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AS3834 Distributor