The APM80905KNBATR from Allegro MicroSystems is a Synchronous Buck Switching Regulator Module that is ideal for driver monitoring systems, advanced driver assistance systems, and instrument cluster applications. It requires an input voltage of 4.5 - 36 V and a supply current of 5 mA. This LED driver features an advanced design that guarantees efficient power conversion for driving high-power infrared or standard LEDs. It streamlines the design with integrated high-side and low-side N-channel MOSFET switches, complemented by high-frequency input voltage and boot capacitors for effortless operation. This LED driver prioritizes safety by offering a suite of fault protection features, including a configurable PWM dimming signal monitor for precise control. It also allows customization according to specific requirements such as programmable switching frequency, output current adjustment, and automatic voltage optimization for driving single or multiple LEDs in series.

This LED driver provides control versatility with an analog dimming input (ADIM) for LED calibration and a fault flag pin (FFn) for fault notification. It is available in a surface-mount package that measures 4 x 4 mm.