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BCT3222 - 6 Channel LED Driver

Description

The BCT3222 is a high performance white LED driver.

The BCT3222 uses an internal resistor to set the bias current for four LEDs, which are matched to +/-1.5%.

Features

  • Drive Common Anode or Common Cathode LEDs.
  • Low 50mV Dropout at 20mA.
  • 20mA full scale current.

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Datasheet preview – BCT3222

Datasheet Details

Part number BCT3222
Manufacturer BROADCHIP
File Size 191.67 KB
Description 6 Channel LED Driver
Datasheet download datasheet BCT3222 Datasheet
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Full PDF Text Transcription

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September , 2009, REV1.0 BCT3222 preliminary 6 Channel LED Driver (Common-Anode & Common-Cathode) Low Dropout Current Source & Current Sink General Description The BCT3222 is a high performance white LED driver. The BCT3222 uses an internal resistor to set the bias current for four LEDs, which are matched to +/-1.5%. The BCT3222'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 BCT3222 requires only a 50mV dropout voltage at a 20mA load on each output to match the LED brightness. By using one SEL pin, the BCT3222 can support to drive 6 parallel Co-Anode or Co-Cathode white LEDs and regulates a constant current for uniform intensity.
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