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LP3980-25B5F

LOWPOWER · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5

LP3980-25B5F from LOWPOWER, in a SOT-23-5. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 VIN power_in Power input voltage; the input range is 1.6V to 5.5V.
2 GND power_in Ground pin.
3 EN input Enable pin; the LDO turns on when EN is above 1.4V and shuts down when EN falls below 0.4V.
4 NC unconnected No connect on this fixed-output variant; the FB feedback function applies only to the LP3980A (ADJ) version.
5 OUT power_out Regulated output voltage; maximum output current is 300mA.

Key specifications

Parameter Value
Manufacturer LOWPOWER
Package SOT-23-5
Category Power Management (PMIC)
Pins 5

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Input Voltage VIN 1.6 5.5 V 5
Output Voltage Accuracy ΔVOUT -2 2 % IOUT=1mA 5
Maximum Output Current Imax 300 mA VEN=VIN>2.5V 5
Current Limit ILIM 650 mA RLOAD=1Ω 5
Quiescent Current IQ 20 μA VEN>1.2V, IOUT=0mA 5
Standby Current ISTBY 0.01 1 μA VEN=0V, Shutdown 5
EN Input Bias Current IIBSD 0.1 1 μA VEN=0V 5
EN Logic-Low Voltage VIL 0.4 V VIN=3V to 5.5V, Shutdown 5
EN Logic-High Voltage VIH 1.4 V VIN=3V to 5.5V, Start-Up 5
Output Noise Voltage 100 μVRMS f=10Hz to 100kHz, IOUT=0mA, VOUT=2.8V 5
Power Supply Rejection Rate PSRR -80 dB f=217Hz, COUT=1µF, IOUT=50mA 5
Power Supply Rejection Rate PSRR -76 dB f=1KHz 5
Auto-discharge On Resistance RDIS 40 Ω 5
Thermal Shutdown Temperature TSD 150 ℃ 5
Input to GND -0.3 6 V 4
EN to GND -0.3 6 V 4
Output Voltage to GND -0.3 V max printed as VIN+0.3V 4
Maximum Junction Temperature TJ 150 ℃ 4
Operating Ambient Temperature Range TA -40 85 ℃ 4
Maximum Soldering Temperature 260 ℃ at leads, 10 sec 4
ESD HBM 2 kV Human Body Model 4
ESD MM 200 V Machine Model 4
Maximum Power Dissipation (SOT23-5) PD 400 mW TA=25℃ 4
Thermal Resistance (SOT23-5) θJA 250 ℃/W 4
Maximum Junction Temperature (operating) TJ(MAX) 125 ℃ 9
Output Capacitor COUT 1 µF ceramic, ESR>25mΩ 9

CAD (KiCad official)

  • Symbol: LP3980-25B5F
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: lp3980-25b5f-etched.step / lp3980-25b5f-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lp3980-25b5f.step / lp3980-25b5f.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: LOWPOWER datasheet (13 pp, sha256 aeffea9306601346, retrieved 2026-10-18, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF