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Texas Instruments LP3981IMM-3.0/NOPB — Discrete Semiconductors
Texas Instruments

LP3981IMM-3.0/NOPB LDO Regulator, 3V Fixed Output, 300mA

MPNLP3981IMM-3.0/NOPB
End of Life

Texas Instruments LP3981IMM-3.0/NOPB, linear voltage regulator, fixed 3V output, 300mA, positive, surface mount 8-VSSOP, -40 to 125°C, active.

$0.85Ref. price · indicative, final on quote
LP3981IMM-3.0/NOPB datasheet
Packaging8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

LP3981IMM-3.0/NOPB Technical Specifications
ParameterValue
Output typeFixed
Mounting typeSurface Mount
Voltage - input6V
Voltage dropout0.2V @ 300mA
Voltage - output (Min (Fixed))3V
Current - output300mA
Current - supply210 µA
Current - quiescent120 µA
Operating temperature-40°C ~ 125°C
PSRR50dB ~ 55dB (1kHz ~ 10kHz)
PackageTape & Reel (TR); Cut Tape (CT)
Case8-TSSOP, 8-MSOP (0.118\", 3.00mm Width)
Control featuresEnable
Protection featuresOver Current, Over Temperature, Short Circuit
Number of regulators1
Output configurationPositive

Product details

What this regulator does on your rail

PSRR sits at 50 dB to 55 dB across the 1 kHz to 10 kHz band, which is useful for cleaning up switching-regulator ripple feeding sensitive analog or RF stages. Quiescent current is 120 µA typical, maxing at 210 µA — low enough for battery-operated gear that stays awake most of the time. Protection includes over-current, over-temperature, and short-circuit shutdown. The operating temperature range of -40°C to 125°C covers automotive under-hood and industrial enclosures, not just office equipment.

Package and mounting

Housed in an 8-VSSOP (3.00 mm width) package, surface-mount only. The supplier device package is 8-VSSOP, which is the same footprint as the standard MSOP-8. Available in Tape & Reel or Cut Tape for prototyping.

Lifecycle and sourcing

Listed as Active in production — no end-of-life notice, no last-time-buy clock. ROHS3 compliant.

Frequently asked questions

Does LP3981IMM-3.0/NOPB have an enable pin?

Yes, the control features include an Enable pin for gating the output on and off.

What is the closest pin-compatible alternative to LP3981IMM-3.0/NOPB?

Within the same LP3981 family, the adjustable-output version (LP3981IMM-ADJ/NOPB) is pin-compatible and uses the same 8-VSSOP footprint, differing only in feedback divider network. For a fixed 3V drop-in with similar dropout and PSRR, the LP3981IMM-3.0 is the only fixed 3V variant in this series.