A2550 Datasheet - Allegro MicroSystems

A2550 Relay Driver

Large numbers of relay-based applications require the use of a microprocessor which implements complex system control. In these systems, there is the need for microprocessor logic supply voltage, power-on reset circuitry, and watchdog capabilities. The Allegro™ A2550 combines the functions of voltag.

A2550 Features

* ▪ Three independent low-side DMOS output drivers ▪ Short-circuit protection of drivers ▪ Eliminates need for flyback diodes on relays ▪ Thermal shutdown ▪ Separate precision 5 V regulator (2%) ▪ Current clamp on 5 V regulator ▪ 16-pin TSSOP package with exposed thermal pad ▪ Programmable reset (NPOR

A2550_AllegroMicroSystems.pdf