AL8871Q Datasheet | Diodes Incorporated

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 pliant 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 Ro HS pliant (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 representative. https://.diodes./quality/productdefinitions 60V BUCK-BOOST LED CONTROLLER Pin Assignments (Top View) CTRL 1 REF 2 NTC 3 P 4 EP STATUS 5 SGND 6 PGND 7 N/C 8 TSSOP-16EP 16 GI 15 PWM 14 FAULT 13 CS 12 VIN 11 BST 10 DRV 9 N/C Applications - Automotive Daytime Running Lights - Automotive Head Lamps - Automotive Fog Lamps - Automotive Interior Lamps Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (Ro HS), 2011/65/EU (Ro HS 2) & 2015/863/EU (Ro HS 3) pliant. 2. See...