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Texas Instruments LP2980IM5X-4.7/NOPB — Analog & Data Acquisition

LP2980IM5X-4.7/NOPB LDO Regulator, 4.7V Fixed, 50mA

MPNLP2980IM5X-4.7/NOPB
Obsolete

Texas Instruments LP2980IM5X-4.7/NOPB, fixed-output LDO regulator, 4.7V, 50mA, 0.22V max dropout, 63dB PSRR at 1kHz, -40°C to 125°C, SOT-23-5 package.

$0.3500Ref. price · indicative, final on quote
Texas Instruments LP2980IM5X-4.7/NOPB datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LP2980IM5X-4.7/NOPB specifications
ParameterValue
Output typeFixed
MountingSurface Mount
Voltage - input16V
Voltage dropout0.22V @ 50mA
Voltage - output (Min (Fixed))4.7V
Output current50mA
Current - supply1.2 mA
Current - quiescent95 µA
Operating temperature-40°C~125°C
PSRR63dB (1kHz)
PackageTape & Reel (TR)
CaseSC-74A, SOT-753
Control featuresEnable
Protection featuresOver Current, Over Temperature, Short Circuit
Number of regulators1
Output configurationPositive

Product details

Fixed 4.7V LDO for tight spots

It comes in a SOT-23-5 package with an Enable pin and built-in protection against over-current, over-temperature, and short circuits.

Dropout and PSRR — the real numbers

Maximum dropout voltage is 0.22 V at the full 50 mA load, so a 5 V rail feeding this regulator only needs about 4.92 V to hold 4.7 V regulation — tight headroom designs can breathe. PSRR is 63 dB at 1 kHz, which knocks down switching-regulator ripple by a factor of roughly 1400.

This part is officially marked Obsolete. For a repair or a legacy BOM line, the only path is independent distribution, sourced per RFQ. There is no pin-compatible direct replacement from TI with the same fixed 4.7 V output in this package; the LP2980 family has other fixed voltages (3.3 V, 5.0 V) that share the same pinout, but a 4.7 V rail is uncommon enough that a board spin or a different regulator family is the realistic move for new production.

Frequently asked questions

Can I replace LP2980IM5X-4.7/NOPB with LP2980IM5X-3.3?

The pinout and package are identical — both are SOT-23-5 with the same Enable and protection features. The only difference is the fixed output voltage: 4.7 V versus 3.3 V. If your load actually needs 4.7 V, swapping to the 3.3 V variant will drop the rail below spec. For a 3.3 V design the 3.3 V variant is a direct drop-in replacement.