High Performance Fault Tolerant LED Driver

AllegroMicroSystems, Inc.'sA8515 device has advancedprotection features to provide optimized viewing. It integrates a current-modeboost converter with internal power switch and two current sinks.

Theboost converter can drive up to 24 LEDs at 120 mA. The two LEDcurrent sinks can also be paralleled together to achieve LED currents up to240 mA. This new device can operate from a single power supply from 5 to40V. The low 720 mV regulation voltage on LED current sources reducespower loss and improves efficiency. A comprehensive fault table is included inthe datasheet to describe the leading-edge performance and protection featuresof the A8515. It also integrates a driver for an (optional) external inputdisconnect switch.

TheA8515GLPTR-T is available in an eTSSOP-16 (LP) exposed pad package for advancedthermal performance.

High Performance Fault Tolerant LED Driver