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Texas Instruments LP2980IBPX-3.3/NOPB — Analog & Data Acquisition

LP2980IBPX-3.3/NOPB LDO Regulator, 3.3V Fixed Output, 50mA

MPNLP2980IBPX-3.3/NOPB
Obsolete

Texas Instruments LP2980IBPX-3.3/NOPB, LDO voltage regulator, fixed 3.3V output, 50mA, 0.22V dropout at 50mA, 63dB PSRR at 1kHz, 95µA quiescent current, -40°C to 125°C, 5-µSMD (0.93x1.11) package.

Texas Instruments LP2980IBPX-3.3/NOPB datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LP2980IBPX-3.3/NOPB specifications
ParameterValue
Output typeFixed
MountingSurface Mount
Voltage - input16V
Voltage dropout0.22V @ 50mA
Voltage - output (Min (Fixed))3.3V
Output current50mA
Current - supply1.2 mA
Current - quiescent95 µA
Operating temperature-40°C~125°C
PSRR63dB (1kHz)
PackageTape & Reel (TR)
Case5-VFBGA
Control featuresEnable
Protection featuresOver Current, Over Temperature, Short Circuit
Number of regulators1
Output configurationPositive

Product details

Fixed 3.3V LDO in a 0.93x1.11 mm µSMD

It is built for space-constrained, noise-sensitive rails — think sensor supplies, audio bias, or MCU analog reference — where the 63 dB PSRR at 1 kHz keeps ripple off the output. The 0.22 V maximum dropout at 50 mA means the input can sit as low as 3.52 V and still hold regulation, which matters in battery-powered gear where the cell voltage sags under load.

With 63 dB of ripple rejection at 1 kHz, this part attenuates a 100 mVpp supply ripple down to roughly 70 µVpp at the output. That is enough to keep switching-regulator hash off a 3.3 V analog rail without a post-filter LC stage.

The 5-µSMD (0.93x1.11 mm) package requires a hot-air rework station for removal and replacement — not a field-swap part for a technician's kit. Plan for a controlled reflow profile if you need to replace it on a board.

Frequently asked questions

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