The AL8871Q is an LED driver, controller IC for driving external MOSFETs to drive high-current LEDs. The buck-boost topology controller enables it to efficiently control the current through series-connected LEDs. The 60V capability enables it to be used in a wide range of applications and drive in excess of 15 LEDs in series.
The AL8871Q is a modified hysteretic controller using a patent-pending control scheme providing high-output current accuracy. High-accuracy dimming is achieved through DC control and high-frequency PWM control.
The AL8871Q uses two pins for fault diagnosis. A flag output highlights a fault, while the multi-level status pin gives further information on the exact fault.
The AL8871Q has been qualified to AEC-Q100 Grade 1 and is automotive compliant supporting PPAPs.
• Automotive Daytime Running Lights • Automotive Head Lamps • Automotive Fog Lamps • Automotive Interior Lamps
• AEC-Q100 Grade 1 Qualified • Wide Input Voltage Range: 5V to 60V • Operating Frequency Up to 1MHz • Analog Dimming Range: 10% to 100% • 1000:1 PWM Dimming Resolution at 500 Hz • High Temperature Control of LED Current Using TCTRL • Fault Reporting for Abnormal Operations • Overtemperature Shutdown • Available in Thermally Enhanced TSSOP-16EP Package • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) • Halogen and Antimony Free. “Green” Device (Note 3) • PPAP Capable (Note 4)