Description

The A8513 is a single-output white LED (WLED) driver for LCD backlighting. It integrates a current-mode boost converter with an internal power switch and one current sink. The A8513 can operate from a single power supply from 4.5 to 40 V, to accommodate start/stop, cold crank, and load dump requirements. A 2 MHz boost converter switching frequency allows the A8513 to operate above the AM radio band.

Features and Benefits

• AEC-Q100 Qualified

• Wide input voltage range of 4.5 to 40 V for start/stop, cold crank and load dump requirements

• Boost converter switching frequency up to 2 MHz, allowing operation above the AM band

• Excellent input voltage transient response

• Internal secondary OVP for redundant protection

• Fully integrated LED current sink and boost converter with 60 V DMOS FET

• Maximum LED current of 150 mA

• Drives up to 14 series LEDs

• Single EN/PWM pin interface for PWM Dimming and Enable function

• 5000:1 PWM dimming at 200 Hz

• Fault flag pin to alert the controller to a myriad of possible fault conditions

• Protection Features:

▫ Shorted output

▫ Open or shorted LED pin

▫ Output undervoltage and overvoltage

▫ Input undervoltage

▫ Shorted boost switch or inductor

▫ Shorted ISET resistor

▫ Open boost Schottky

▫ Overtemperature

Applications:

• LCD backlighting for:

▫ Automotive infotainment

▫ Automotive cluster

▫ Automotive center stack

▫ Industrial LCD displays

▫ Portable DVD players

▫ Flatbed Scanners

▫ LED Lighting

A8513KLYTR-T属于集成电路（IC） > LED 驱动器。Allegro MicroSystems制造生产的A8513KLYTR-TLED 驱动器器件属于 LED 驱动器电源管理集成电路 (PMIC) 系列，可通过标称固定电压的电源为负载（通常为发光二极管）提供电流，并且电流可控。它与用于电压调节的类似产品的主要区别在于，这类器件提供较低的反馈电压（以提高系统能效），而且通常可对器件工作点进行外部控制，可在照明应用中用于实现调光功能。