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BL8587 - High Efficiency 1x/1.5x Charge Pump 4-Channels LED Driver

Description

BL8587 is a low noise, high efficiency, and constant frequency charge pump DC/DC converter for white LED application.

The operation frequency is 1MHz.

Features

  • Input range: 2.8-5.5V.
  • ±1% LED current accuracy.
  • 20mA driver capacity each channel.
  • Auto 1×/1.5× mode switchover.
  • PWM dimming control.
  • Serial-pulse dimming control in linear 16 steps.
  • Short-circuit protection.
  • Thermal shutdown.
  • 1MHz constant switching frequency.
  • 3mm×3mm QFN package.

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Datasheet Details

Part number BL8587
Manufacturer BELLING
File Size 268.60 KB
Description High Efficiency 1x/1.5x Charge Pump 4-Channels LED Driver
Datasheet download datasheet BL8587 Datasheet

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Full PDF Text Transcription

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BL8587 High Efficiency 1×/1.5× Charge Pump 4-Channels LED Driver DESCRIPTION BL8587 is a low noise, high efficiency, and constant frequency charge pump DC/DC converter for white LED application. The operation frequency is 1MHz. BL8587 works in load switch (1×) and fractional (1.5×) modes with four independent control outputs, each channel can provide 20mA constant current precisely from a 2.8V to 5.5V supply. Only two external 1µF and two 0.47µF capacitors are required to build a compact and low-cost power supply solution. BL8587 uses EN pin for simple on/off control and single wire serial pulse dimming in 16 steps. A low current shutdown feature disconnects the load from VIN and reduces quiescent current to less than 1µA. FEATURES • Input range: 2.8-5.
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