component
LP3980-18B5F
Public Made by Adomby adom
LOWPOWER Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownLP3980-18B5F
LOWPOWER · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5
LP3980-18B5F 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 pin; the input voltage range is 1.6V to 5.5V, and the absolute maximum Input to GND is -0.3V to 6V. |
| 2 | GND | power_in | Ground pin. |
| 3 | EN | input | Enable pin: the regulator turns on when EN is above 1.4V and shuts down when EN falls below 0.4V; absolute maximum EN to GND is -0.3V to 6V, and it may be tied to VIN for continuous on operation. |
| 4 | NC | unconnected | No connect on the LP3980-18B5F fixed-output variant; the FB (feedback, 0.8V reference) function on this pin applies only to the LP3980AB5F adjustable version. |
| 5 | OUT | power_out | Regulated output voltage pin; a ceramic output capacitor of at least 1µF with ESR greater than 25mΩ is required to ensure stability, and the capacitor should be located no more than 0.5 inch from the pin. |
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 | ||
| Dropout Voltage | VDROP | 360 | mV | IOUT=300mA, VOUT=1.8V | 5 | ||
| Line Regulation | ΔVOUT/(ΔVIN×VOUT) | 0.3 | % | VOUT=1.8V, IOUT=1mA, VIN=2.8V to 5.5V | 5 | ||
| Load Regulation | ΔVOUT/VOUT | 1.5 | % | VOUT=1.8V, IOUT=1mA to 300mA | 5 | ||
| Standby Current | ISTBY | 0.01 | 1 | μA | VEN=0V, Shutdown | 5 | |
| EN Input Bias Current | IIBSD | 0.1 | 1 | μA | VEN=0V | 5 | |
| Logic-Low Voltage (EN) | VIL | 0.4 | V | VIN=3V to 5.5V, Shutdown | 5 | ||
| Logic-High Voltage (EN) | VIH | 1.4 | V | VIN=3V to 5.5V, Start-Up | 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 | VIN | -0.3 | 6 | V | 4 | ||
| EN to GND | VEN | -0.3 | 6 | V | 4 | ||
| Output Voltage to GND | VOUT | -0.3 | V | Printed upper limit is (VIN+0.3V); not a numeric value | 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 (Human Body Model) | 2 | KV | HBM | 4 | |||
| ESD MM (Machine Model) | 200 | V | MM | 4 | |||
| Maximum Power Dissipation (SOT23-5) | PD | 400 | mW | TA=25℃ | 4 | ||
| Thermal Resistance (SOT23-5) | θJA | 250 | ℃/W | 4 | |||
| Maximum Operating Junction Temperature | TJ(MAX) | 125 | ℃ | Operating (continuous) junction temperature limit stated in thermal considerations | 9 |
CAD (KiCad official)
- Symbol:
LP3980-18B5F - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
lp3980-18b5f-etched.step/lp3980-18b5f-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lp3980-18b5f.step/lp3980-18b5f.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: LOWPOWER datasheet (13 pp, sha256
aeffea9306601346, retrieved 2026-10-17, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).