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Texas Instruments LM2937ESX-15 — Analog & Data Acquisition

Texas Instruments LM2937ESX-15 15V Fixed LDO, 500mA, TO-263

MPNLM2937ESX-15
Obsolete

Texas Instruments LM2937ESX-15, fixed 15V positive LDO voltage regulator, 500mA output, 26V max input, TO-263-3 DDPAK surface mount, -40°C to 125°C.

$1.7700Ref. price · indicative, final on quote
Texas Instruments LM2937ESX-15 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM2937ESX-15 specifications
ParameterValue
Output typeFixed
MountingSurface Mount
Voltage - input26V
Voltage dropout1V @ 50mA
Voltage - output (Min (Fixed))15V
Output current500mA
Current - supply20 mA
Current - quiescent2 mA
Operating temperature-40°C~125°C
PackageTape & Reel (TR); Cut Tape (CT)
CaseTO-263-4, D²Pak (3 Leads + Tab), TO-263AA
Protection featuresOver Temperature, Reverse Polarity, Short Circuit
Number of regulators1
Output configurationPositive

Product details

15 V fixed rail for industrial and automotive aux supplies

The LM2937ESX-15: Built-in protection against over-temperature, reverse polarity, and short circuit reduces external component count — no need for a separate protection diode or fuse on the 15 V rail in most designs.

Procurement must go through the independent surplus and broker channel. Stock that surfaces after an official EOL announcement should be date-code verified — the PCN bulletin for the LM2937 family is the reference for authenticating production lots.

26 V input ceiling — plan for the pre-regulator

Maximum input voltage is 26 V. The 2 mA quiescent current (20 mA max supply current) keeps the overhead low for always-on rails.

DDPAK footprint and thermal management

Frequently asked questions

What is the replacement for LM2937ESX-15?

This part is obsolete, so buyers need a drop-in or functional replacement to continue using the circuit.

Where can I buy LM2937ESX-15?

Sourcing buyers need to find stock or lead time for this obsolete part.

Is LM2937ESX-15 obsolete?

Designers and procurement need to know lifecycle status for long-term availability.

What is the output voltage of LM2937ESX-15?

Design engineers need to confirm the fixed output voltage for their circuit.

What is the pinout of LM2937ESX-15?

Maintenance techs and engineers need to verify pin compatibility when replacing or designing in.

Are there any LM2937ESX-15 equivalents from other brands?

Buyers may consider alternatives if the TI part is unavailable or expensive.