A8522 Overview
The A8522 is a programmable multi-output LED driver for LCD backlighting. It integrates a current-mode boost converter with internal power switch and 8 current sinks. The IC operates from 4.5 to 36 V, and is able to withstand up to 40 V load-dump conditions encountered in automotive systems.
A8522 Key Features
- AEC-Q100 qualified
- Wide input voltage range of 4.5 to 36 V
- Operates down to 3.9 V (VIN falling) for idle stop, and up
- Integrated boost converter with DMOS switch and OVP
- 8 fully integrated LED current sinks, with individually
- I2C™ interface for programming LED current, PWM
- Ability to drive multiple loads from a single IC
- Extensive PWM dimming (up to 10,000:1 at 100 Hz)
- Extensive diagnostics and fault reporting
- Thermal warning and derating of LED current at higher