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AS3824 - 16-Channel White LED Controller

General Description

The AS3824 is a 16 channel high precision LED controller for use in LCD-backlight panels.

Dynamic power feedback controls the external power supply to guarantee best efficiency.

Key Features

  • include thermal shutdown as well as open and short LED detection. The device is programmable via serial interface (SPI). 2 Features.
  • Supports all LED backlight topologies x No limit of VLED or ILED, device is not exposed to high voltage/high current.
  • Optimum power savings through local dimming x 16 fully flexible 12 bit PWM generators (period, high time, delay, reverse).
  • One global highly accurate 10 bit DAC which sets the LED current (±0.5% accuracy).
  • High dynamic range boo.

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Datasheet Details

Part number AS3824
Manufacturer Renesas
File Size 548.25 KB
Description 16-Channel White LED Controller
Datasheet download datasheet AS3824 Datasheet

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Full PDF Text Transcription (Reference)

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AS3824 16-Channel White LED Controller for LCD Backlight 1 Description The AS3824 is a 16 channel high precision LED controller for use in LCD-backlight panels. Dynamic power feedback controls the external power supply to guarantee best efficiency. One high accurate global 10 bit DAC can be used to set the LED current as well as each channel has its own additional 8 bit DAC to boost the dynamic range of LED Backlight systems. Each channel is equipped with an independent PWM generator which can also be synchronized to an external synchronization signal (VSYNC). A fast mode supports minimum PWM duty cycle operation which helps to further reduce the energy consumption of modern LED Backlight systems.