A8500 Description
The A8500 is a multi-output WLED driver for medium display backlighting. The A8500 integrates a boost converter and eight current-sinks to provide a flexible WLED/RGB backlight driver. The boost converter can provide output voltage up to 47.
A8500 Key Features
- Active current sharing between LED strings for ±1.5% typical current matching and ±1.2% typical accuracy
- Drive up to 12 series × 8 parallel = 96 LEDs (Vf = 3.2 V, If = 20 mA)
- Flexible dimming, using alternative methods: ▫ LED duty cycle control (PWM pin) ▫ DC current using serial programming (E
- Boost converter with integrated 50 V, 2 A DMOS
- LED sinks rated for 25 mA
- 200 kHz to 2 MHz switching frequency
- Open LED disconnect
- Boost current limit, thermal shutdown, and soft start
- No audible ceramic capacitor noise during PWM dimming
- Adjustable overvoltage protection (OVP)