A8501 Description
TheA8501 is a multioutputWLED/RGB driver for backlighting medium-size displays. The A8501 integrates a boost converter and four 100 mA current sinks. LED channels can be tied together for up to 400 mA sink capability.
A8501 Key Features
- 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
- Drive up to 9 series LEDs in 4 parallel strings, 36 LEDs
- LED sinks rated for 100 mA each (400 mA total)
- PWM dimming with LED PWM duty cycle control
- 4000:1 dimming range
- Extensive fault mode protection schemes
- Shorted LED protection against misconnected loads- with true output disconnect