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LM2937

UTC
Part Number LM2937
Manufacturer UTC
Description 500mA LOW DROPOUT VOLTAGE REGULATOR
Published Apr 12, 2007
Detailed Description UNISONIC TECHNOLOGIES CO., LTD LM2937 LINEAR INTEGRATED CIRCUIT 500mA LOW DROPOUT VOLTAGE REGULATOR  DESCRIPTION Th...
Datasheet PDF File LM2937 PDF File

LM2937
LM2937

Overview
UNISONIC TECHNOLOGIES CO.
, LTD LM2937 LINEAR INTEGRATED CIRCUIT 500mA LOW DROPOUT VOLTAGE REGULATOR  DESCRIPTION The UTC LM2937 is a positive voltage regulator capable of supplying up to 500mA of load current.
The use of a PNP power transistor provides a low dropout voltage characteristic.
With a load current of 500mA 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 10mA with a full 500mA load current when the input to output voltage differential is greater than 3V.
The UTC LM2937 requires an output bypass capacitor for stability.
As with most low dropout regulators, the ESR of this capacitor remains a critical design parameter, but the LM2937 includes special compensation circuitry that relaxes ESR requirements.
The UTC LM2937 is stable for all ESR below 3Ω.
This allows the use of low ESR chip capacitors.
Ideally suited for automotive applications, the UTC LM2937 will protect itself and any load circuitry from reverse battery connections, two-battery jumps and up to +60V/-50V load dump transients.
Familiar regulator features such as short circuit and thermal shutdown protection are also built in.
 FEATURES * Fully specified for operation over -40C~ +125C * Output current in excess of 500mA * 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 * Reverse battery protection * Internal short circuit and thermal overload protection * 60V input transient protection * Mirror image insertion protection * Built-in ON/OFF control function www.
unisonic.
com.
tw Copyright © 2014 Unisonic Technologies Co.
, Ltd 1 of 10 QW-R102-012.
J LM2937  ORDERING INFORMATION Order Number Lead Free Halogen Free - LM2937G-xx-AA3-R LM2937L-xx-TA3-...


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