component

L7812CD2T

Public Made by Adom

by adom

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

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L7812CD2T

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

L7812CD2T from UMW, in a TO-263. 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 I power_in Unregulated input supply; the datasheet gives an absolute maximum input voltage of 35 V for 5 to 18 V outputs (40 V for the 24 V output).
2 G power_in Ground reference pin for the regulator.
3 O power_out Regulated 12 V output, rated for output current up to 1.2 A with thermal overload and short-circuit protection.

Key specifications

Parameter Value
Manufacturer UMW
Package TO-263
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 11.5 12 12.5 V TJ=25°C 6
Output voltage VO 11.4 12 12.6 V IO=5mA to 1A, PO≤15W, VI=15.5V to 27V 6
Line regulation ΔVO 240 mV VI=14.5V to 30V 6
Line regulation ΔVO 120 mV VI=16V to 22V 6
Load regulation ΔVO 240 mV TJ=25°C, IO=5mA to 1.2A 6
Load regulation ΔVO 120 mV TJ=25°C, IO=250mA to 750mA 6
Quiescent current change ΔIQ 0.5 mA IO= 5mA to 1A 6
Quiescent current change ΔIQ 1 mA VI=15V to 30V 6
Quiescent current IQ 6 mA TJ=25°C, VI=35V 6
Short circuit current ISC 1.5 A TJ=25°C 6
Supply voltage rejection SVR 60 dB VI=15V to 25V, f=120Hz, IO=500mA 6
Output voltage temperature coefficient ΔVO/ΔT 0.35 mV/°C 6
Input voltage VI 35 V VO=5 to 18V 1
Operating temperature range TOPR -40 125 °C 1
Storage temperature range TSTG -65 150 °C 1
Thermal resistance junction-case (TO-263) RthJC 3 °C/W 1
Thermal resistance junction-ambient (TO-263) RthJA 62.5 °C/W 1

CAD (KiCad official)

  • Symbol: L7812CD2T
  • Footprint: Package_TO_SOT_SMD:TO-263-2
  • 3D model: TO-263 (KiCad packages3D, STEP)
  • 3D model files: l7812cd2t-etched.step / l7812cd2t-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); l7812cd2t.step / l7812cd2t.glb are the bare package body.

Provenance

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

  • Datasheet: UMW datasheet (18 pp, sha256 389cce5d2730866f, retrieved 2026-10-17, 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