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LP3980-28B5F

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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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Datasheet

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Contents

README

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LP3980-28B5F

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

LP3980-28B5F 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 pin. Operating range 1.6V to 5.5V; absolute max -0.3V to 6V. Bypass with 1µF ceramic capacitor to GND.
2 GND power_in Device ground reference. Return path for input, output, and internal control circuitry.
3 EN input Enable pin. Logic-high (VIH ≥ 1.4V with VIN=3-5.5V) turns the regulator on; logic-low (VIL ≤ 0.4V) puts the device into shutdown (<1µA standby). Absolute max -0.3V to 6V. Do not leave floating.
4 NC unconnected No connect. On the fixed-output 2.8V variant (LP3980-28B5F) this pin is unused; only the adjustable LP3980-AB5F option uses this pin as feedback (FB) with 0.8V reference.
5 OUT power_out Regulated output voltage. Fixed 2.8V on this variant, delivering up to 300mA. Requires ≥1µF ceramic output capacitor. Absolute max -0.3V to (VIN+0.3V).

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • LP3980-28B5F
  • LP3980-28B5FB3F
  • LP3980-28B5FQVF

CAD (KiCad official)

  • Symbol: LP3980-28B5F
  • 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 (13 pp, sha256 aeffea9306601346, 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