component

LP3994-33B3F

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.

componentpower management (pmic)lp3994-33b3ffactory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
Download ZIP Propose a change
Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 16d ago
viewers lp3994-33b3f: viewers · Ray 16d ago
lp3994-33b3f-etched.glb Publish 0.1.0 · Ray 16d ago
lp3994-33b3f-etched.step lp3994-33b3f: factory component page (tier=lcsc) · Ray 16d ago
lp3994-33b3f-hero.glb lp3994-33b3f: hero GLB from the etched model (keeps the MPN mark) · Ray 16d ago
lp3994-33b3f-hero.overlay.json Publish 0.1.0 · Ray 16d ago
lp3994-33b3f.glb Publish 0.1.0 · Ray 16d ago
lp3994-33b3f.kicad_mod Publish 0.1.0 · Ray 16d ago
lp3994-33b3f.kicad_sym Publish 0.1.0 · Ray 16d ago
lp3994-33b3f.lbr Publish 0.1.0 · Ray 16d ago
lp3994-33b3f.step Publish 0.1.0 · Ray 16d ago
package.json Publish 0.1.0 · Ray 16d ago
page.json Set visibility: public · Ray 16d ago
README.md Publish 0.1.0 · Ray 16d ago

LP3994-33B3F

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

LP3994-33B3F 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 reference pin; the datasheet describes it only as ground and gives no further limits for this pin.
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; must be closely decoupled to GND with a 1μF or greater ceramic capacitor placed as close to the pin as possible, and the input operating 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
Input Voltage operation range VIN 3.6 40 V operation 5
Output Voltage accuracy VOUT -1.5 1.5 % ILOAD=1mA 5
Output Voltage (nominal, 3.3V variant) VOUT 3.3 V ILOAD=1mA 5
Output Voltage Load Regulation RegLOAD 10 17 25 mV ILOAD from 1mA to 150mA VIN=VOUT+1V 5
Output Voltage Load Regulation (LP3994-33B3F) RegLOAD 10 18 42 mV ILOAD from 1mA to 150mA LP3994-33B3F, VIN=5V 5
DC Supply Quiescent Current IQ 1.5 2.5 μA ILOAD=0mA 5
Dropout Voltage VDROP 550 mV VOUT=3.3V, ILOAD=100mA 5
Dropout Voltage VDROP 850 mV VOUT=3.3V, ILOAD=150mA 5
Output Voltage Line Regulation RegLINE 0.01 %/V VIN=VOUT+1V~40V ILOAD=1mA 5
Maximum Load Current ILOAD 150 mA VIN=VOUT+1V 5
Short Current ISHORT 120 mA OUT short to GND 5
Output Noise eN 120 μVRMS 10Hz to 100kHz, ILOAD=30mA 5
Junction Temperature-Limit Protection TJ_LIMIT 150 ℃ 5
Power Supply Rejection Ratio PSRR -45 dB 1kHz (COUT=1uF, ILOAD=10mA) 5
VOUT Temperature Coefficient TCVOUT 0.01 %/℃ 5
IN Pin to GND VIN -0.3 44 V 4
OUT Pin to GND VOUT -0.3 6 V 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 SOT23-3 PDmax 500 mW TA ≤25℃, SOT23-3 4
Maximum Power Dissipation SOT23-3 PDmax 320 mW TA=70℃, SOT23-3 4
Maximum Power Dissipation SOT23-3 PDmax 260 mW TA=85℃, SOT23-3 4
Thermal resistance junction-to-ambient θJA 250 ℃/W SOT23-3 4
Input Voltage (recommended) VIN 3.6 40 V 4
Operating Junction Temperature Range TJ -40 150 ℃ 4
Ambient Temperature Range TA -40 85 ℃ 4
Output capacitance (recommended) COUT 1 10 μF 9
Output capacitor ESR (recommended) ESR 5 100 mΩ 9

CAD (KiCad official)

  • Symbol: LP3994-33B3F
  • Footprint: Package_TO_SOT_SMD:SOT-23-3
  • 3D model: SOT-23-3 (KiCad packages3D, STEP)
  • 3D model files: lp3994-33b3f-etched.step / lp3994-33b3f-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lp3994-33b3f.step / lp3994-33b3f.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 2026-10-19, 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