Features
- Wide Input Voltage Range from 5V to 55V
- Up to 750mA Output Current Capacity
- Low Drop-out Voltage on LED Pin
- Output Current Adjustable by a Low Power External Reference Resistor
- PWM and Analog Dimming with Excellent Linearity
- Automatically Enter and Exit Standby Mode Without Enable Pin
- Internal Protections:
- Input Under Voltage Lock-out (UVLO)
- Enable LED String Open Protection
- LED String Short Protection
- Over Temperature Protection (OTP)
- Diagnostic Enable with Adjustable Threshold for Low-Dropout Operation
- Thermal Fold-Back if Chip Temperature Exceeds the Threshold
- Fault Reporting: UVLO, OTP, LED Open, and LED Short
- Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
- Halogen and Antimony Free. “Green” Device (Note 3)
- The AL5871Q is suitable for automotive applications
requiring specific change control; this part is AEC-Q100
qualified, PPAP capable, and manufactured in IATF16949
certified facilities.

Applications
- Automotive interior lighting: dome light, reading lamps
- Automotive exterior lighting:
- Small light: blind-spot detection indicators, charging inlets, door handles
- Rear light: rear lamps, center high mounted stop lamps, side markers