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Texas Instruments LM2937ESX-10/NOPB — Analog & Data Acquisition

LM2937ESX-10/NOPB 10V Fixed LDO, 500mA, TO-263, Obsolete

MPNLM2937ESX-10/NOPB
Obsolete

Texas Instruments LM2937ESX-10/NOPB, fixed 10 V output LDO, 500 mA, TO-263-4 (D²Pak), -40°C to 125°C, over-temp / reverse polarity / short-circuit protection.

$2.5300Ref. price · indicative, final on quote
Texas Instruments LM2937ESX-10/NOPB datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM2937ESX-10/NOPB specifications
ParameterValue
Output typeFixed
MountingSurface Mount
Voltage - input26V
Voltage dropout1V @ 50mA
Voltage - output (Min (Fixed))10V
Output current500mA
Current - supply20 mA
Current - quiescent2 mA
Operating temperature-40°C~125°C
PackageTape & Reel (TR)
CaseTO-263-4, D²Pak (3 Leads + Tab), TO-263AA
Protection featuresOver Temperature, Reverse Polarity, Short Circuit
Number of regulators1
Output configurationPositive

Product details

10 V fixed rail, 500 mA — legacy LDO for industrial boards

The LM2937ESX-10/NOPB is a fixed 10 V output LDO from Texas Instruments, delivering up to 500 mA. It is a positive-output, single-regulator device in a TO-263-4 (D²Pak) surface-mount package. The dropout is 1 V max at 50 mA.

Protection set — built for field survival

Over-temperature, reverse polarity, and short-circuit protection are all on-die. That means a swapped load or a miswired supply on a field retrofit won't instantly kill the regulator — the reverse polarity clamp takes the hit before the die sees reverse bias. The quiescent current is 2 mA typical, and the maximum supply current is 20 mA. For a 500 mA output, the 2 mA Iq is modest — it won't waste the thermal budget in a sealed enclosure.

No stock-holding claim; each quote confirms current pricing and delivery.

Frequently asked questions

Is LM2937ESX-10/NOPB obsolete?

Yes, Texas Instruments lists the LM2937ESX-10/NOPB as obsolete. No official replacement part number has been issued.

What protection features does this LDO include?

Over-temperature, reverse polarity, and short-circuit protection are built in. That makes it more robust for field-swap scenarios where a miswired supply or a shorted load could otherwise kill the regulator.