component

LP3966S-ADJ

Public Made by Adom

by adom

HGSEMI Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-263-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management (pmic)lp3966s-adjfactory-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 7d ago
viewers lp3966s-adj: viewers · Ray 7d ago
lp3966s-adj-etched.glb Publish 0.1.0 · Ray 7d ago
lp3966s-adj-etched.step lp3966s-adj: factory component page (tier=lcsc) · Ray 7d ago
lp3966s-adj-hero.glb lp3966s-adj: hero GLB from the etched model (keeps the MPN mark) · Ray 7d ago
lp3966s-adj-hero.overlay.json Publish 0.1.0 · Ray 7d ago
lp3966s-adj.glb Publish 0.1.0 · Ray 7d ago
lp3966s-adj.kicad_mod Publish 0.1.0 · Ray 7d ago
lp3966s-adj.kicad_sym Publish 0.1.0 · Ray 7d ago
lp3966s-adj.lbr Publish 0.1.0 · Ray 7d ago
lp3966s-adj.step Publish 0.1.0 · Ray 7d ago
package.json Publish 0.1.0 · Ray 7d ago
page.json Set visibility: public · Ray 7d ago
README.md Publish 0.1.0 · Ray 7d ago

LP3966S-ADJ

HGSEMI · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-263-5

LP3966S-ADJ from HGSEMI, in a TO-263-5. 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 EN input Active-high CMOS/TTL-compatible enable input that must not be left floating, and it may be tied directly to IN for continuous operation.
2 IN power_in Unregulated input supply, rated at +2.8V to +8V maximum (operating input voltage listed as 3.3V to 8V).
3 GND power_in Ground pin, with the TAB also connected internally to the IC ground on both packages.
4 OUT power_out Regulator output voltage; the output structure blocks reverse current flow when external voltages exceed the set output.
5 ADJ input Feedback input receiving the 1.24V reference from an external resistor divider that sets the output voltage between 1.24V and 15V.
6 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer HGSEMI
Package TO-263-5
Category Power Management (PMIC)
Pins 6

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 Supply Voltage (absolute maximum) VIN 3 8 V 4
Enable Input Voltage (absolute maximum) VEN -0.3 V 4
Lead Temperature (soldering 10 sec) 245 °C soldering 10 sec 4
Storage Temperature Range -65 150 °C 4
Operating Junction Temperature -40 125 °C 4
Operating Input Voltage 3.3 8 V 4
Package Thermal Resistance TO-263 (junction-to-case) θJC 3 °C/W TO-263 4
Case-to-sink thermal resistance (thermal design range) θCS 0 2 °C/W thermal design note 11
Output Voltage Accuracy -2 2 % 100mA ≤ IOUT ≤ 3A, (VOUT + 1V) ≤ VIN ≤ 8V 4
Dropout Voltage 80 200 mV ΔVOUT = -1%; IOUT = 100mA 4
Dropout Voltage 450 800 mV ΔVOUT = -1%; IOUT = 3A 4
Ground Current 5 20 mA IOUT = 750mA, VIN = VOUT + 1V 4
Ground Current 60 150 mA IOUT = 3A 4
Current Limit 3 4 A VOUT = 0V (note 7, pulse testing) 4
Line Regulation 0.1 0.5 % IOUT = 100mA, (VOUT + 1V) ≤ VIN ≤ 8V 4
Load Regulation 0.2 1 % VIN = VOUT + 1V, 100mA ≤ IOUT ≤ 3A 4
Reference Voltage VREF 1.215 1.267 V VREF ≤ VOUT ≤ VIN -1, 3V≤ VOUT ≤8V, 10mA ≤ IL ≤ IFL, TJ ≤ TJmax (note 8) 5
Adjust Pin Bias Current 40 120 nA 5
Enable Input Logic Voltage Low (OFF) 0.8 V Low (OFF) 5
Enable Input Logic Voltage High (ON) 2.4 V High (ON) 5
Enable Pin Input Current 15 30 µA VEN = 8V 5
Enable Pin Input Current 75 µA VEN = 8V 5
Enable Pin Input Current 2 4 µA VEN = 0.8V 5
Regulator Output Current in Shutdown 10 20 µA VEN ≤ 0.8V, VIN ≤ 8V and VOUT = 0V (note 10) 5

CAD (KiCad official)

  • Symbol: LP3966S-ADJ
  • Footprint: Package_TO_SOT_SMD:TO-263-5_TabPin6
  • 3D model: TO-263-5 (KiCad packages3D, STEP)
  • 3D model files: lp3966s-adj-etched.step / lp3966s-adj-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lp3966s-adj.step / lp3966s-adj.glb are the bare package body.

Provenance

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

  • Datasheet: HGSEMI datasheet (18 pp, sha256 847ddc207f2a2ca7, 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