component

LM7912CT

Public Made by Adom

by adom

HGSEMI Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-220-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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LM7912CT

HGSEMI · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-220-3

LM7912CT from HGSEMI, in a TO-220-3. 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 Common ground reference for the regulator; the datasheet states no separate voltage or current limit for this pin.
2 Input power_in Unregulated negative input voltage with an absolute maximum of -35 V at TJ=25°C, and output regulation is specified for inputs from -14.5 V to -21 V.
3 Output power_out Regulated -12 V output, specified at -11.52 V to -12.48 V for 5 mA to 1.0 A load, with output current rated in excess of 1.5 A.

Key specifications

Parameter Value
Manufacturer HGSEMI
Package TO-220-3
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 VO -11.52 -12.48 V -14.5V ≤ VIN ≤ -21V; 5.0mA ≤ IO ≤ 1.0 A; TJ=25°C (CIN=2.2µF, CO=1.0µF) 4
Line Regulation ∆UV 114 mV IO = 100mA, -14.5V ≤ VIN ≤ -30V 4
Line Regulation ∆UV 58.5 mV IO = 100mA, -16V ≤ VIN ≤ -22V 4
Line Regulation ∆UV 228 mV IO = 500mA, -14.5V ≤ VIN ≤ -30V 4
Load Regulation ∆UI 228 mV 5.0mA ≤ IO ≤ 1.5 A 4
Load Regulation ∆UI 114 mV 250mA ≤ IO ≤ 750mA 4
Quiescent Current IB 7.8 mA 4
Quiescent Current Change ∆IB 1.25 mA -14.5V ≤ VIN ≤ -30V 4
Quiescent Current Change ∆IB 0.48 mA 5.0mA ≤ IO ≤ 1.5 A 4
Output voltage tolerance (Features) -4 4 % 1
Maximum input voltage -35 V TJ = 25°C 2
Maximum operating junction temperature 125 ℃ 2
Operating Temperature Range 0 125 ℃ 2
Lead Temperature (TL) TL 245 ℃ Soldering, 10 seconds 2

CAD (KiCad official)

  • Symbol: LM7912CT
  • Footprint: Package_TO_SOT_THT:TO-220-3_Vertical
  • 3D model: TO-220-3 (KiCad packages3D, STEP)
  • 3D model files: lm7912ct-etched.step / lm7912ct-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm7912ct.step / lm7912ct.glb are the bare package body.

Provenance

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

  • Datasheet: HGSEMI datasheet (9 pp, sha256 fe0f5995fcb9d116, 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