component
CJ78M08
Public Made by Adomby adom
Changjing Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252-2. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Generated by kicad-footprint-generator · KiCad file format 20260206
| Name | Last updated |
|---|---|
| docs | 20d ago |
| viewers | 20d ago |
| cj78m08-etched.glb | 20d ago |
| cj78m08-etched.step | 20d ago |
| cj78m08-hero.glb | 20d ago |
| cj78m08-hero.overlay.json | 20d ago |
| cj78m08.glb | 20d ago |
| cj78m08.kicad_mod | 20d ago |
| cj78m08.kicad_sym | 20d ago |
| cj78m08.lbr | 20d ago |
| cj78m08.step | 20d ago |
| package.json | 20d ago |
| page.json | 20d ago |
| README.md | 20d ago |
CJ78M08
Changjing · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252-2
CJ78M08 from Changjing, in a TO-252-2. 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 | Unregulated input supply pin; absolute maximum input voltage is 35 V, and a bypass capacitor of about 0.33 µF should be placed close to the regulator. |
| 2 | GND | power_in | Common ground and reference pin for the regulator; the datasheet gives no separate limit for this pin. |
| 3 | OUT | power_out | Regulated 8 V output pin, rated for up to 0.5 A peak output current, with a recommended output bypass capacitor of about 0.1 µF placed close to the regulator. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | TO-252-2 |
| 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 | 7.76 | 8 | 8.24 | V | 1 | |
| Output Voltage | Vo | 7.6 | 8 | 8.4 | V | 10.5≤Vi≤23V, Io=5mA-350mA | 1 |
| Load Regulation | ΔVo | 20 | 160 | mV | Io=5mA-500mA | 1 | |
| Load Regulation | ΔVo | 10 | 80 | mV | Io=5mA-200mA | 1 | |
| Line Regulation | ΔVo | 6 | 100 | mV | 10.5V≤Vi≤25V, Io=200mA | 1 | |
| Line Regulation | ΔVo | 2 | 50 | mV | 11V≤Vi≤25V, Io=200mA | 1 | |
| Quiescent Current | Iq | 4.6 | 6 | mA | 1 | ||
| Quiescent Current Change | ΔIq | 0.8 | mA | 10.5V≤Vi≤25V, Io=200mA | 1 | ||
| Quiescent Current Change | ΔIq | 0.5 | mA | 5mA≤Io≤350mA | 1 | ||
| Ripple Rejection | RR | 56 | 80 | dB | 11.5V≤Vi≤21.5V, f=120Hz, Io=300mA | 1 | |
| Dropout Voltage | Vd | 2 | V | Io=350mA | 1 | ||
| Output Noise Voltage | VN | 52 | μV | 10Hz≤f≤100KHz | 1 | ||
| Short Circuit Current | Isc | 250 | mA | Vi=14V | 1 | ||
| Peak Current | Ipk | 0.5 | A | 1 | |||
| Input Voltage | Vi | 35 | V | 1 | |||
| Operating Junction Temperature Range | TOPR | -40 | 125 | ℃ | 1 | ||
| Storage Temperature Range | TSTG | -65 | 150 | ℃ | 1 | ||
| Thermal Resistance from Junction to Ambient | RθJA | 80 | ℃/W | 1 |
CAD (KiCad official)
- Symbol:
CJ78M08 - Footprint:
Package_TO_SOT_SMD:TO-252-2 - 3D model: TO-252-2 (KiCad packages3D, STEP)
- 3D model files:
cj78m08-etched.step/cj78m08-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cj78m08.step/cj78m08.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (5 pp, sha256
40d6a6da8302a173, retrieved 2026-10-19, 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).