component
CJ78M09E-TFN-ARG
Public Made by Adomby adom
Changjing Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252-2L. 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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Contents
README
markdownCJ78M09E-TFN-ARG
Changjing · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252-2L
CJ78M09E-TFN-ARG from Changjing, in a TO-252-2L. 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 voltage pin; the absolute maximum input voltage is 35 V, with all voltages referenced to the network ground terminal. |
| 2 | GND | power_in | Ground pin; all voltages are referenced to the network ground terminal. |
| 3 | OUT | power_out | Output voltage pin supplying the regulated output; for the CJ78M09E this is the fixed 9.0 V output. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | TO-252-2L |
| 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 |
|---|---|---|---|---|---|---|---|
| Output voltage (±2% grade, TJ = 25°C) | VOUT | 8.82 | 9 | 9.18 | V | TJ = 25°C, ±2% grade | 8 |
| Output voltage (over line and load) | VOUT | 8.55 | 9 | 9.45 | V | VIN = 11.5 to 22V, IOUT = 5 to 350mA | 8 |
| Line regulation | LNR | 8 | 100 | mV | VIN = 11.5 to 25V, IOUT = 200mA | 8 | |
| Line regulation | LNR | 3 | 50 | mV | VIN = 12 to 25V, IOUT = 200mA | 8 | |
| Load regulation | LDR | 20 | 180 | mV | IOUT = 5 to 500mA | 8 | |
| Load regulation | LDR | 10 | 90 | mV | IOUT = 5 to 200mA | 8 | |
| Quiescent current | IQ | 3.3 | 6 | mA | 8 | ||
| Quiescent current change | ∆IQ | 0.8 | mA | VIN = 11.5 to 25V, IOUT = 200mA | 8 | ||
| Quiescent current change | ∆IQ | 0.5 | mA | IOUT = 5 to 350mA | 8 | ||
| Maximum input voltage | VIN | 35 | V | 3 | |||
| Maximum junction temperature | TJ Max | 150 | °C | 3 | |||
| Storage temperature | Tstg | -65 | 150 | °C | 3 | ||
| Soldering temperature | Tsolder | 260 | °C | 10s | 3 | ||
| Operating junction temperature | TJ | -40 | 125 | °C | 3 | ||
| Junction-to-ambient thermal resistance | RΘJA | 80 | °C/W | TO-252-2L package | 4 | ||
| Reference maximum power dissipation for continuous operation | PD Ref | 1.25 | W | TO-252-2L package, TA = 25°C | 4 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| housing | polyester | resin. The cover tape is a multilayer film (Hear Activated Adhesive in nature) primarily composed of polyester film, | 28 |
CAD (KiCad official)
- Symbol:
CJ78M09E-TFN-ARG - Footprint:
Package_TO_SOT_SMD:TO-252-2 - 3D model: TO-252-2L (KiCad packages3D, STEP)
- 3D model files:
cj78m09e-tfn-arg-etched.step/cj78m09e-tfn-arg-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cj78m09e-tfn-arg.step/cj78m09e-tfn-arg.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (29 pp, sha256
590bf746101b9297, retrieved 2026-10-18, 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).