High power LED driver for lighting applications
4.5 - 29 V | SP7600 EXAR

The SP7600 is a non-synchronous voltage mode PWM step down converter optimized to drive a string of high power LEDs at up to 2A of continuous current. A wide 4.5V to 29V input voltage range allows for single supply operations from industry standard 5V, 12V or 24V power rails.

A 1.2MHz constant operating frequency allows for small external components selection while an internal control loop compensation reduces the overall component count and solution footprint. With a 2.5% output setpoint accuracy and an input feedforward control, these devices improve stability as well as typical transient and regulation responses. Dimming and shutdown mode is provided via an enable function when required. A programmable over current and under voltage lock out protection insures safe operations under abnormal operating conditions.

The SP7600 is pin-to-pin compatible with Exar's XRP7603 and XRP7604 devices providing the most flexibility when designing evolutive and scalable lighting solutions from 500mA to 2A and is offered in a compact thermally enhanced lead free RoHS compliant 8-pin SO package.