component
CJ7815
Public Made by Adomby adom
Changjing Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252-2(DPAK). 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 | 16d ago |
| viewers | 16d ago |
| cj7815-etched.glb | 16d ago |
| cj7815-etched.step | 16d ago |
| cj7815-hero.glb | 16d ago |
| cj7815-hero.overlay.json | 16d ago |
| cj7815.glb | 16d ago |
| cj7815.kicad_mod | 16d ago |
| cj7815.kicad_sym | 16d ago |
| cj7815.lbr | 16d ago |
| cj7815.step | 16d ago |
| package.json | 16d ago |
| page.json | 16d ago |
| README.md | 16d ago |
CJ7815
Changjing · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252-2(DPAK)
CJ7815 from Changjing, in a TO-252-2(DPAK). 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 voltage, with an absolute maximum Vi of 35 V and regulation specified for 17.5 V to 30 V input, with bypass capacitor Ci 0.33 µF to be located as close to the regulator as possible. |
| 2 | GND | power_in | Ground reference pin shared by the input and output bypass capacitors (Ci 0.33 µF, Co 0.1 µF) in the typical application circuit. |
| 3 | OUT | power_out | Regulated 15 V output (Vo 14.25 V to 15.75 V over 17.5 V to 30 V input and 5 mA to 1 A load), with output bypass capacitor Co 0.1 µF recommended for stability and transient response. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | TO-252-2(DPAK) |
| 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 | 14.4 | 15 | 15.6 | V | TJ=25℃ | 1 |
| Output voltage | VO | 14.25 | 15 | 15.75 | V | 17.5V≤Vi≤30V, Io=5mA-1A, P≤15W | 1 |
| Load Regulation | ∆Vo | 12 | 300 | mV | TJ=25℃, Io=5mA-1.5A | 1 | |
| Load Regulation | ∆Vo | 3 | 150 | mV | TJ=25℃, Io=250mA-750mA | 1 | |
| Line regulation | ∆Vo | 12 | 300 | mV | 17.5V≤Vi≤30V, TJ=25℃ | 1 | |
| Line regulation | ∆Vo | 4 | 150 | mV | 20V≤Vi≤26V, TJ=25℃ | 1 | |
| Quiescent Current | Iq | 4.3 | 8 | mA | TJ=25℃ | 1 | |
| Quiescent Current Change | ∆Iq | 1 | mA | 17.5V≤Vi≤30V | 1 | ||
| Quiescent Current Change | ∆Iq | 0.5 | mA | 5mA≤IO≤1A | 1 | ||
| Output voltage drift | △Vo/△T | -1 | mV/℃ | IO=5mA | 1 | ||
| Output Noise Voltage | VN | 90 | μV | 10Hz≤f≤100KHz | 1 | ||
| Ripple Rejection | RR | 54 | 70 | dB | 18.5V≤Vi≤28.5V, f=120Hz, TJ=25℃ | 1 | |
| Dropout Voltage | Vd | 2 | V | TJ=25℃, Io=1A | 1 | ||
| Output resistance | RO | 19 | mΩ | f=1KHZ | 1 | ||
| Short Circuit Current | Isc | 230 | mA | TJ=25℃ | 1 | ||
| Peak Current | Ipk | 2.1 | A | TJ=25℃ | 1 | ||
| Input Voltage | Vi | 35 | V | 1 | |||
| Thermal Resistance from Junction to Ambient | RθJA | 80 | ℃/W | 1 | |||
| Operating Junction Temperature Range | TOPR | -25 | 125 | ℃ | 1 | ||
| Storage Temperature Range | TSTG | -65 | 150 | ℃ | 1 | ||
| Continuous total dissipation | PD | 1.25 | W | 1 |
CAD (KiCad official)
- Symbol:
CJ7815 - Footprint:
Package_TO_SOT_SMD:TO-252-2 - 3D model: TO-252-2(DPAK) (KiCad packages3D, STEP)
- 3D model files:
cj7815-etched.step/cj7815-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cj7815.step/cj7815.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (4 pp, sha256
2de73eab9c17a8cf, 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).