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BCT3228 - 8 Channel LED Driver

Description

The BCT3228 is a high performance 8 channel white LED driver.

The BCT3228 uses two internal resistor to set the bias current for four LEDs.

Features

  • Drive Common Anode or Common Cathode LEDs.
  • Low 50mV Dropout at 20mA.
  • 20mA full scale current.
  • One Wire interface for 8-Step Brightness Control.
  • 2.7V to 5.5V Supply Voltage Range.
  • Thermal Shutdown Protection.
  • Low Input Noise and EMI.
  • RoHS Compliant and 100% Lead (Pb)-Free, QFN-24L Package.

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Datasheet preview – BCT3228

Datasheet Details

Part number BCT3228
Manufacturer BROADCHIP
File Size 209.28 KB
Description 8 Channel LED Driver
Datasheet download datasheet BCT3228 Datasheet
Additional preview pages of the BCT3228 datasheet.

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Full PDF Text Transcription

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August , 2011, REV1.0 BCT3228 preliminary 8 Channel LED Driver (Common-Anode & Common-Cathode) Low Dropout Current Source & Current Sink General Description The BCT3228 is a high performance 8 channel white LED driver. The BCT3228 uses two internal resistor to set the bias current for four LEDs. The BCT3228's advantages over ballast resistors include much lower bias variation with supply voltage variation, significantly lower dropout voltage, and in some applications, significantly improved efficiency. The BCT3228 requires only a 50mV dropout voltage at a 20mA load on each output to match the LED brightness. By using two SEL pin, the BCT3228 can support to drive 8 parallel Co-Anode or Co-Cathode white LEDs and regulates a constant current for uniform intensity.
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