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LP3984-28B5F

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by Ray

LOWPOWER Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

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LP3984-28B5F

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

LP3984-28B5F from LOWPOWER, in a SOT-23-5. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 VIN power_in Power input voltage. Recommended operating range 2.5V to 5.5V (absolute max 6.5V). Requires a >=1µF ceramic or tantalum input capacitor placed within 0.5 inch of the pin.
2 GND power_in Ground reference for the LDO. Should be returned to a clean analog ground plane.
3 EN input Chip enable, active high, TTL-logic-compatible. VIH >= 1.4V turns the regulator on; VIL <= 0.4V forces shutdown (ISTBY ~1µA). Input bias current ~1µA at VEN=3V. Tie to VIN for always-on operation. Absolute max 0V to VIN+0.3V.
4 NC unconnected No connection. Leave floating or tie to ground per PCB layout preference.
5 VOUT power_out Regulated output voltage. Fixed 2.8V for the -28B5F option, +/-2% accuracy at IOUT=1mA, 300mA rated load current, current limit ~500mA. Requires a >=1µF low-ESR (>25mΩ) ceramic output capacitor placed within 0.5 inch of the pin.

Key specifications

Parameter Value
Manufacturer LOWPOWER
Package SOT-23-5
Category PMIC
Pins 5

Ordering variants

Same part, different packaging or reel option.

  • LP3984-28B5F

CAD (KiCad official)

  • Symbol: LP3984-28B5F
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: LOWPOWER datasheet (6 pp, sha256 a1514bb510946b2a, retrieved 2026-08-17, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF