BL8587 Overview
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.
BL8587 Key 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
- Short-circuit protection
- Thermal shutdown
- 1MHz constant switching frequency
- 3mm×3mm QFN package