LM2937IMP-3.3/NOPB | Texas Instruments

Voltage regulator, LM2937IMP-3.3/NOPB, Texas Instruments

The LM2937IMP-3.3/NOPB 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, and with a load current of 500 mA the minimum input to output voltage differential required for the output to remain in regulation is typically 0.5 V (1-V ensured 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 output voltage differential is greater than 3 V. This product requires an output bypass capacitor for stability, as with most low dropout regulators, the ESR of this capacitor remains a critical design parameter, but includes special compensation circuitry that relaxes ESR requirements.

Features

• Output trimmed for 5% tolerance under all operating conditions
• Internal short circuit and thermal overload protection
• Reverse battery protection
• Mirror image insertion protection

Applications

• Automotive
• Industrial controls
• Point-of-Load regulation