AL5871中文资料55V/750mA Single-Channel Linear LED Driver数据手册Diodes规格书

描述 Description

The AL5871 is a single-channel linear LED driver with PWM (pulsewidth modulation) and analog dimming control. The AL5871 can drive up to 750mA and the LED current can be set by the low-power reference resistor connected to the REF pin.

The AL5871 regulates LED current accurate to ±4%, with excellent PWM and analog dimming performance. The AL5871 enters standby mode to save power if no PWM signal is detected.

The AL5871 monitors the temperature and reduces the LED current if the chip temperature exceeds the threshold temperature. And the input undervoltage lockout (UVLO), LED string open/short protection, and overtemperature protection (OTP) are designed for applications to improve system robustness. The FAULTB pin is pulled low if any protection is triggered.

The AL5871 is a simple solution to deliver constant current for a single LED string with one-fail-all-fail function, and can work with AL5873 to address different requirements. The AL5871 is available in the TSSOP-16EP (Type DX) package.