The A4481 is a single low-dropout linear regulator with
complete control, diagnostics, and protection features that
address many requirements of automotive applications. It
regulates input voltages from 5.25 to 40 V, down to 5 V ±1%
output voltage and is able to supply up to 50 mA of load current.
Diagnostic output from the A4481 includes Power OK (POK)
output to alert the microprocessor that a fault has occurred.
Protection features include input undervoltage lockout (UVLO),
foldback overcurrent protection, output undervoltage and
overvoltage protections (UV/OVP), and thermal shutdown
(TSD). In addition, the output is protected from a short-to-battery
event up to 32 V.
The A4481 device is available in an 8-pin SOIC package with
exposed pad for enhanced thermal dissipation. It is lead (Pb)
free, with 100% matte-tin leadframe plating.
