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A2550

Allegro MicroSystems
Part Number A2550
Manufacturer Allegro MicroSystems
Description Relay Driver
Published Apr 24, 2007
Detailed Description A2550 Relay Driver with 5 V Regulator for Automotive Applications Features and Benefits ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ Three in...
Datasheet PDF File A2550 PDF File

A2550
A2550

Overview
A2550 Relay Driver with 5 V Regulator for Automotive Applications Features and Benefits ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ 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) delay time Programmable watchdog Automotive voltage and temperature ranges Active clamps for automotive load dump specifications Lead (Pb) free Description 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 voltage regulator, watchdog, and reset, as well as three low-side DMOS relay driver outputs.
Primarily targeted at automotive applications, this IC is ...


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