component

LP3994-50B3F

Public Made by Adom

by adom

LOWPOWER Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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LP3994-50B3F

LOWPOWER · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-3

LP3994-50B3F from LOWPOWER, in a SOT-23-3. 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 GND power_in Ground pin for the LDO, the return for the 1μF or greater input and output ceramic capacitors.
2 VOUT power_out Output pin; bypass with a 1μF or greater ceramic capacitor from this pin to ground, placed as close to the pin as possible.
3 VIN power_in Supply input pin that must be closely decoupled to GND with a 1μF or greater ceramic capacitor placed as close to the pin as possible; operating input range is 3.6V to 40V.

Key specifications

Parameter Value
Manufacturer LOWPOWER
Package SOT-23-3
Category Power Management (PMIC)
Pins 3

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Output Voltage accuracy VOUT -1.5 1.5 % ILOAD=1mA 5
Output Voltage Load Regulation RegLOAD 10 17 25 mV ILOAD from 1mA to 150mA, VIN=VOUT+1V 5
DC Supply Quiescent Current IQ 1.5 2.5 μA ILOAD=0mA 5
Input Voltage operation range VIN 3.6 40 V 5
IN Pin to GND VIN -0.3 44 V IN pin to GND 4
OUT Pin to GND VOUT -0.3 6 V OUT pin to GND 4
Maximum Junction Temperature TJ 150 ℃ 4
Operating Ambient Temperature Range TA -40 85 ℃ 4
Maximum Soldering Temperature 260 ℃ at leads, 10 sec 4
Maximum Power Dissipation SOT23-3 PDmax 500 mW SOT23-3, TA≤25℃ 4
Maximum Power Dissipation SOT23-3 PDmax 320 mW SOT23-3, TA=70℃ 4
Maximum Power Dissipation SOT23-3 PDmax 260 mW SOT23-3, TA=85℃ 4
ESD Human Body Model HBM 2 KV HBM (Human Body Model) 4
ESD Machine Model MM 200 V MM (Machine Model) 4
Input Voltage VIN 3.6 40 V 4
Operating Junction Temperature Range TJ -40 150 ℃ 4
Ambient Temperature Range TA -40 85 ℃ 4
Junction-to-ambient thermal resistance SOT23-3 θJA 250 ℃/W SOT23-3 package 4

CAD (KiCad official)

  • Symbol: LP3994-50B3F
  • Footprint: Package_TO_SOT_SMD:SOT-23-3
  • 3D model: SOT-23-3 (KiCad packages3D, STEP)
  • 3D model files: lp3994-50b3f-etched.step / lp3994-50b3f-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lp3994-50b3f.step / lp3994-50b3f.glb are the bare package body.

Provenance

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

  • Datasheet: LOWPOWER datasheet (12 pp, sha256 b3a554afddcaf7da, 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