component

LR7140-T

Public Made by Adom

by adom

LR 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)lr7140-tfactory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
lr7140-t / README.md
History Download
Ray Publish 0.1.0 7f01fe5 8d ago

LR7140-T

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

LR7140-T from LR, 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 VSS power_in Ground reference pin, labelled VSS in the SOT23-3 pin configuration (the typical application circuit labels this node GND).
2 VOUT power_out Regulated 4.0 V output (LR7140, ±2% accuracy on the -T version); output current is rated to 50 mA and VOUT must stay between GND-0.3 V and VIN+0.3 V per the absolute maximum ratings.
3 VIN power_in Unregulated input supply; absolute maximum input voltage is 32 V, and the electrical characteristics are specified for input up to 24 V, with a 10 µF input capacitor shown in the typical circuit.

Key specifications

Parameter Value
Manufacturer LR
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 VIN 24 V 7
Output voltage VOUT 3.92 4 4.08 V VIN=6.0V,IOUT=10mA 7
Output current IOUT 50 mA VIN=6.0V 7
Line regulation 0.05 0.2 %/V 5.0V≤VIN≤24V, IOUT=10mA 7
Load regulation △VOUT 20 50 mV VIN=6.0V, 1mA≤IOUT≤60mA 7
Dropout voltage Vd 270 300 330 mV IOUT=50mA, △VOUT·2% 7
Quiescent current ISS 1.8 6 uA IOUT=0 7
Temperature coefficient -100 100 ppm/℃ VIN=6.0V, IOUT=10mA, -40℃≤Ta≤+85℃ 7
Input voltage (absolute maximum) VIN 32 V 4
Power dissipation SOT23-3 PD 250 mW SOT(23-3) 4
Operating temperature TOPR -40 85 ℃ 4
Storage temperature TSTG -40 125 ℃ 4
ESD HBM ESD(HBM) 2 KV 4

CAD (KiCad official)

  • Symbol: LR7140-T
  • Footprint: Package_TO_SOT_SMD:SOT-23-3
  • 3D model: SOT-23-3 (KiCad packages3D, STEP)
  • 3D model files: lr7140-t-etched.step / lr7140-t-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lr7140-t.step / lr7140-t.glb are the bare package body.

Provenance

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

  • Datasheet: LR datasheet (11 pp, sha256 b7a5830da867c1fe, retrieved 2026-10-19, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • 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