Automotive linear regulator IC with built-in diagnostics and protection features
The new A4481 from Allegro MicroSystems Europe is an AEC-Q100 qualified linear voltage regulator IC with built-in control, diagnostics and protection features that address the requirements of automotive applications.
The new device regulates input voltages between 5.25 and 40 V down to an output voltage of 5 V ±1 percent, and is able to supply up to 50 mA of load current. As a result, it will power sensors, low-power microcontrollers and transceivers in automotive control units for interior and under-hood applications.
The diagnostic output from the A4481 includes a "power OK" output, while protection features include output protection from a short-to-battery event up to 32 V - in the case of a wiring harness fault, for example - input undervoltage lockout, foldback overcurrent protection, output undervoltage and overvoltage protection, and thermal shutdown.
The A4481KLJTR-T is available in an 8-pin SOIC package with exposed pad for enhanced thermal dissipation. It is lead (Pb) free, with 100 percent matt-tin leadframe plating.
Please click here to download a copy of the A4481 linear voltage regulator IC data sheet.
