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CJ78M15
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.
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
markdownCJ78M15
Changjing · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252-2(DPAK)
CJ78M15 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 supply to the regulator; the absolute maximum input voltage is 35 V and the operating junction temperature range is 0 to +125 ℃. |
| 2 | GND | power_in | Ground reference pin for the regulator. |
| 3 | OUT | power_out | Regulated 15 V output, rated for a maximum output current IOM of 0.5 A. |
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 (Vi=23V, Io=350mA, 25 C) | Vo | 14.4 | 15 | 15.6 | V | Vi=23V,Io=350mA 25℃ | 1 |
| Output Voltage (17.5V<=Vi<=30V, Io=5mA~350mA, Po<=15W, 0-125 C) | Vo | 14.25 | 15 | 15.75 | V | 17.5≤Vi≤30V, Io=5mA~350mA, Po≤15W, 0-125℃ | 1 |
| Load Regulation (Io=5mA~500mA, 25 C) | ΔVo | 300 | mV | Io=5mA~500mA 25℃ | 1 | ||
| Load Regulation (Io=5mA~200mA, 25 C) | ΔVo | 150 | mV | Io=5mA~200mA 25℃ | 1 | ||
| Line Regulation (17.5V<=Vi<=30V, Io=200mA, 25 C) | ΔVo | 100 | mV | 17.5V≤Vi≤30V, Io=200mA 25℃ | 1 | ||
| Line Regulation (20V<=Vi<=26V, Io=200mA, 25 C) | ΔVo | 50 | mV | 20V≤Vi≤26V, Io=200mA 25℃ | 1 | ||
| Quiescent Current (Vi=23V, Io=350mA, 25 C) | Iq | 6 | mA | Vi=23V,Io=350mA 25℃ | 1 | ||
| Quiescent Current Change (17.5V<=Vi<=30V, Io=200mA, 0-125 C) | ΔIq | 0.8 | mA | 17.5V≤Vi≤30V, Io=200mA 0-125℃ | 1 | ||
| Quiescent Current Change (Vi=23V, Io=5mA~350mA, 0-125 C) | ΔIq | 0.5 | mA | Vi=23V, Io=5mA~350mA 0-125℃ | 1 | ||
| Output Noise Voltage | VN | 90 | μV | 10Hz≤f≤100KHz 25℃ | 1 | ||
| Ripple Rejection | RR | 54 | dB | 18.5≤Vi≤28.5V,f=120Hz,Io=300mA 0-125℃ | 1 | ||
| Dropout Voltage | Vd | 2 | V | 25℃ | 1 | ||
| Input Voltage | Vi | 35 | V | 1 | |||
| Operating Junction Temperature Range | TOPR | 0 | 125 | ℃ | Operating temperature range applies unless otherwise specified | 1 | |
| Storage Temperature Range | TSTG | -65 | 150 | ℃ | 1 | ||
| Continuous Total Dissipation | PD | 1.25 | W | Ta= 25 ℃ | 1 |
CAD (KiCad official)
- Symbol:
CJ78M15 - Footprint:
Package_TO_SOT_SMD:TO-252-2 - 3D model: TO-252-2(DPAK) (KiCad packages3D, STEP)
- 3D model files:
cj78m15-etched.step/cj78m15-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cj78m15.step/cj78m15.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (2 pp, sha256
72787b1816308393, 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).