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A8500 - Flexible WLED/RGB Backlight Driver

General Description

The A8500 is a multi-output WLED driver for medium display backlighting.

The A8500 integrates a boost converter and eight current-sinks to provide a flexible WLED/RGB backlight driver.

The boost converter can provide output voltage up to 47 V.

Key Features

  • Active current sharing between LED strings for ±1.5% typical current matching and ±1.2% typical accuracy.
  • Drive up to 12 series × 8 parallel = 96 LEDs (Vf = 3.2 V, If = 20 mA).
  • Flexible dimming, using alternative methods: ▫ LED duty cycle control (PWM pin) ▫ DC current using serial programming (EN pin) ▫ DC current using external PWM signal (APWM pin) ▫ An external resistor.
  • Boost converter with integrated 50 V, 2 A DMOS.
  • LED sinks rated for 25 mA.
  • 200 kHz to 2 MHz.

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Other Datasheets by Allegro MicroSystems

Part Number Description
A8501 4 Channel x 100 mA WLED/RGB Driver
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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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A8500 Flexible WLED/RGB Backlight Driver for Medium Size LCDs FEATURES AND BENEFITS ▪ Active current sharing between LED strings for ±1.5% typical current matching and ±1.2% typical accuracy ▪ Drive up to 12 series × 8 parallel = 96 LEDs (Vf = 3.