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Texas Instruments LM2940IMP-8.0/NOPB — Analog & Data Acquisition

LM2940IMP-8.0/NOPB 8V 1A LDO Regulator

MPNLM2940IMP-8.0/NOPB
Obsolete

Texas Instruments LM2940IMP-8.0/NOPB, fixed 8V output LDO linear regulator, 1A output current, 66dB PSRR at 120Hz, dropout 1V max at 1A, SOT-223-4 surface-mount package, -40°C to 85°C operating temperature.

$2.0000Ref. price · indicative, final on quote
Texas Instruments LM2940IMP-8.0/NOPB datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM2940IMP-8.0/NOPB specifications
ParameterValue
Output typeFixed
MountingSurface Mount
Voltage - input26V
Voltage dropout1V @ 1A
Voltage - output (Min (Fixed))8V
Output current1A
Current - supply15 mA
Current - quiescent10 mA
Operating temperature-40°C~85°C
PSRR66dB (120Hz)
PackageTape & Reel (TR); Cut Tape (CT)
CaseTO-261-4, TO-261AA
Protection featuresOver Current, Over Temperature, Reverse Polarity, Short Circuit
Number of regulators1
Output configurationPositive

Product details

Fixed 8 V rail, 1 A LDO — what the ratings mean

Its 66 dB PSRR at 120 Hz tells you it knocks down the 100/120 Hz ripple from a rectified mains supply by a factor of roughly 2000 — useful for powering analog circuits or sensor front-ends that can't tolerate ripple on the rail.

Dropout and headroom — the 1 V floor

Maximum dropout is 1 V at 1 A, so the input must stay above 9 V to maintain regulation at full load. Below that the output starts to fold. The 26 V absolute-maximum input gives you headroom for unregulated supplies up to 24 V nominal.

Lifecycle — obsolete, but still sourced

TI has marked this part obsolete (product status: Obsolete). Every unit we quote is sourced from verified distributor inventory, date-code checked, and shipped against your RFQ.

Housed in a SOT-223-4 (TO-261-4 equivalent) surface-mount package.

Frequently asked questions

Where can I buy LM2940IMP-8.0/NOPB?

This obsolete part is not available through the factory channel.

Is LM2940IMP-8.0/NOPB obsolete and can I still buy it?

Yes, it is officially obsolete per the manufacturer. You can still buy it through the surplus and broker channel — we source verified inventory on a per-RFQ basis.