A8510 Datasheet PDF - Allegro MicroSystems

Description
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. The boost converter can drive up to 96 LEDs with 12 LEDs at 40 mA per string. The LED sinks can also be paralleled together to achieve even higher LED currents, up to 320 mA. The A8510 can operate from a single power supply, from 5 to 40 V.

FEATUREs and Benefits
• 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

APPLICATIONs
• Industrial LCD displays
• Backlighting LCD displays
• Infotainment displays