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L7812CD2T
Public Made by Adomby 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.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownL7812CD2T
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);l7812cd2t.step/l7812cd2t.glbare 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, primaryclaude-haiku-5-5(text), consensusclaude-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).