Allegro MicroSystems Inc. Relay Driver with 5 V Regulator for Automotive Applications A2550KLPTR-T

The A2550 is an automotive-grade relay driver with three low-side DMOS outputs, a 5 V ±2% linear regulator offering 40 mA, integrated watchdog, and programmable power-on reset. It features short-circuit and thermal protection, active clamps for load dump compliance up to 48 V, and operates from -40 °C to 125 °C ambient. The device is housed in a 16-pin TSSOP package with an exposed thermal pad and is qualified to AEC-Q100 with 2.5 kV HBM and 1050 V CDM ESD ratings. It supports extended voltage ranges and eliminates the need for external flyback diodes.