Typical Application Showing Boost Configuration with Input Switch to Protect Against VOUT-to-GND Short for A8518 LED Driver

Beschreibung

• Typical Application Showing Boost Configuration with Input Switch to Protect Against VOUT-to-GND Short for A8518 LED Driver. The A8518 is a multi-output LED driver for small-size LCD backlighting. It integrates a current-mode boost converter with internal power switch and two current sinks. The boost converter can drive up to 22 white LEDs, 11 LEDs per string, at 200 mA. The LED sinks can be paralleled together to achieve higher LED currents up to 400 mA. The A8518 operates from a single power supply from 4.5 to 40 V