AL5871Q 55V Linear LED Drivers

Diodes Incorporated AL5871Q 55V Linear LED Drivers are automotive-grade single-channel linear LED drivers with PWM and analog dimming control. This LED driver can drive up to 750mA, and the LED current is controlled by the low-power reference resistor connected to the REF pin. The AL5871Q linear LED driver regulates LED current accurately up to ±4%, with excellent PWM and analog dimming performance. A standby mode is automatically triggered to save power if the AL5871Q detects no PWM signal. This linear LED driver monitors the temperature and reduces the LED current if the chip temperature exceeds the threshold temperature. The input Under-Voltage Lock-Out (UVLO), LED string open/short protection, and Over-Temperature Protection (OTP) are designed for automotive applications to improve system robustness. The FAULTB pin is pulled low if any protection is triggered. The AL5871Q is available in a TSSOP-16EP (Type DX) package and delivers constant current for a single LED string with one fail-all function. Typical applications include blind-spot detection indicators, charging inlets, side markers, and reading lamps.