The LM2937 is a positive voltage regulator capable of supplying up to 500 mA of load current. The use of a PNP power transistor provides a low dropout voltage characteristic. With a load current of 500 mA the minimum input to output voltage differential required for the output to remain in regulation is typically 0.5V (1V guaranteed maximum over the full operating temperature range). Special circuitry has been incorporated to minimize the quiescent current to typically only 10 mA with a full 500 mA load current when the input to out put voltage differential is greater than 3V.
Features
Fully specified for operation over −40˚C to +125˚C
Output current in excess of 500 mA
Output trimmed for 5% tolerance under all operating conditions
Typical dropout voltage of 0.5V at full rated load current
Wide output capacitor ESR range, up to 3Ω
Internal short circuit and thermal overload protection
