AL8871Q

Description 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 seriesconnected 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 patentpending control scheme providing high-output current accuracy. High-accuracy dimming is achieved through DC control and highfrequency 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. Features 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) For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes represe...