A8501
Overview
TheA8501 is a multioutputWLED/RGB driver for backlighting medium-size displays. The A8501 integrates a boost converter and four 100 mA current sinks.
- 600 kHz to 2.2 MHz switching frequency-ability to operate above the AM band
- Internal bias supply for single-supply operation (VIN = 6.8 to 21 V)
- Boost converter with integrated 40 V DMOS switch and OVP-load-dump protection
- 3.5 µA shutdown current-limits battery drain
- Active current sharing between LED strings for
- 8% current matching and 0.7% accuracy
- Drive up to 9 series LEDs in 4 parallel strings, 36 LEDs maximum (Vf = 3.5 V, If = 100 mA)
- LED sinks rated for 100 mA each (400 mA total)
- PWM dimming with LED PWM duty cycle control
- 4000:1 dimming range
