component
CJ7812B-TGN-ARG
Public Made by Adomby adom
Changjing Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-263-2L. 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
markdownCJ7812B-TGN-ARG
Changjing · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-263-2L
CJ7812B-TGN-ARG from Changjing, in a TO-263-2L. 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 | IN | power_in | Input of the device; for the CJ7812B the recommended input voltage range is up to 32 V, with an absolute maximum of 36 V. |
| 2 | GND | power_in | Regulator ground reference for the device. |
| 3 | OUT | power_out | Output of the device, providing the 12 V fixed regulated output at up to 1 A (at TJ = 25°C). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | TO-263-2L |
| 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 |
|---|---|---|---|---|---|---|---|
| Maximum input voltage range | VIN MAX | 36 | V | 8 | |||
| Maximum output current | IOUT MAX | 1 | A | 8 | |||
| Storage temperature | Tstg | -65 | 150 | °C | 8 | ||
| Maximum junction temperature | TJ Max | 150 | °C | 8 | |||
| Soldering temperature & time | Tsolder | 260 | °C | 10s | 8 | ||
| Input voltage range (CJ7812B) | VIN | 32 | V | 8 | |||
| Operating junction temperature | TJ | -40 | 125 | °C | 8 | ||
| Output voltage, ±2% grade | VOUT | 11.75 | 12 | 12.25 | V | TJ = 25°C, ±2% grade | 14 |
| Output voltage, over line/load/temperature | VOUT | 11.5 | 12 | 12.5 | V | IOUT = 5mA to 1A, VIN = 14.8 to 27V, TJ = -40 to 125°C, PD ≤ 15W | 14 |
| Line regulation | ΔVRLINE | 25 | 120 | mV | VIN = 14.8 to 27V, IOUT = 500mA | 14 | |
| Load regulation | ΔVRLOAD | 40 | 120 | mV | VIN = 19V, IOUT = 5mA to 1A | 14 | |
| Quiescent current | IQ | 3.4 | 6 | mA | VIN = 19V, TJ = -40 to 125°C, IOUT = 0mA | 14 | |
| Quiescent current change | ΔIQ | 0.1 | 0.8 | mA | VIN = 19V, IOUT = 5mA to 1A | 14 | |
| Quiescent current change | ΔIQ | 0.3 | 0.8 | mA | VIN = 14.8 to 30V, IOUT = 500mA | 14 | |
| Short circuit current | ISC | 200 | mA | VIN = 35V, TA = 25°C | 14 | ||
| Junction-to-ambient thermal resistance (TO-263-2L) | RΘJA | 62.3 | °C/W | TA = 25°C, soldered on PCB, still air, no extra heat dissipation pads | 9 | ||
| Junction-to-case thermal resistance (TO-263-2L) | RΘJC | 5.3 | °C/W | TA = 25°C, soldered on PCB, still air, no extra heat dissipation pads | 9 | ||
| Reference maximum power dissipation for continuous operation (TO-263-2L) | PD Ref | 1.6 | W | TA = 25°C, soldered on PCB, still air, no extra heat dissipation pads | 9 |
CAD (KiCad official)
- Symbol:
CJ7812B-TGN-ARG - Footprint:
Package_TO_SOT_SMD:TO-263-2 - 3D model: TO-263-2L (KiCad packages3D, STEP)
- 3D model files:
cj7812b-tgn-arg-etched.step/cj7812b-tgn-arg-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cj7812b-tgn-arg.step/cj7812b-tgn-arg.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (33 pp, sha256
2bf7e0142c58a2c8, retrieved 2026-10-20, 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).