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Texas Instruments LM2937ES-3.3/NOPB — Analog & Data Acquisition

Texas Instruments LM2937ES-3.3/NOPB LDO Regulator

MPNLM2937ES-3.3/NOPB
Active

Texas Instruments LM2937ES-3.3/NOPB, fixed 3.3V output LDO, 500mA, 1V dropout at 50mA, -40°C to 125°C, DDPAK/TO-263-3, surface mount, tube.

$2.8200Ref. price · indicative, final on quote
Texas Instruments LM2937ES-3.3/NOPB datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM2937ES-3.3/NOPB specifications
ParameterValue
Output typeFixed
MountingSurface Mount
Voltage - input26V
Voltage dropout1V @ 50mA
Voltage - output (Min (Fixed))3.3V
Output current500mA
Current - supply1.25 A
Current - quiescent2 mA
Operating temperature-40°C~125°C
PackageTube
CaseTO-263-4, D²Pak (3 Leads + Tab), TO-263AA
Protection featuresOver Temperature, Reverse Polarity, Short Circuit
Number of regulators1
Output configurationPositive

Product details

Dropout voltage: the headroom number that matters

The LM2937ES-3.3/NOPB: Maximum dropout is 1 V at 50 mA output. If your input bus dips below that — say during a cranking event or battery sag — the output follows.

500 mA output with industrial temp coverage

Rated for 500 mA continuous output, with a quiescent current of 2 mA. Protection circuits cover over-temperature, reverse polarity, and short circuit — three failure modes common in field wiring and hot-swap scenarios.

Package and mounting — DDPAK/TO-263-3

Surface-mount DDPAK/TO-263-3 (3-lead plus tab). Tube shipment; no reel or tape for automated pick-and-place without a tube feeder or tray.

Frequently asked questions

Is LM2937ES-3.3/NOPB obsolete?

Buyers need to know if the part can still be sourced or if a replacement is required.

What is the dropout voltage of LM2937ES-3.3/NOPB?

Design engineers must verify if the dropout voltage meets the headroom requirements for their application.

Where can I buy LM2937ES-3.3/NOPB?

Sourcing buyers need to find authorized distributors quickly to secure stock and price.

What is the LM2937ES-3.3/NOPB equivalent?

Engineers and procurement need alternative parts for backup or second sourcing.

What is the LM2937ES-3.3/NOPB pinout?

Design verification and layout depend on correct pin mapping for the TO-263 package.

What is the price of LM2937ES-3.3/NOPB?

Budgeting and BOM cost analysis require current pricing from distributors.