Part A8510
Description High Efficiency Fault Tolerant LED Driver
Manufacturer Allegro MicroSystems
Size 5.45 MB
Allegro MicroSystems
A8510

Overview

The A8510 is a multi-output white LED driver for LCD backlighting. It integrates a current-mode boost converter with internal power switch and 8 current sinks.

  • Integrated 2 MHz capable boost converter with 60 V DMOS switch with OVP protection
  • Sync function to synchronize boost converter switching frequencies up to 2.3 MHz
  • LED current up to 40 mA per LED channel into 8 channels
  • Drives up to 12 series LEDs in 8 parallel strings (Vf = 3.5 V, If = 40 mA), VIN = 8 V, switching frequency of 1 MHz
  • Single EN/PWM pin interface for PWM dimming and enable functions
  • APWM pin for fine-tuning color adjustment and/or maximizing contrast ratio
  • Integrated driver for optional external PMOS input disconnect switch
  • Typical LED accuracy of 0.7% and 0.8% for LED-to-LED matching
  • Internal bias supply for single-supply operation from 5 to 40 V
  • Extensive protection features PACKAGE: 26-PIN QFN (SUFFIX EC)