component
CJ78L05C-P3T-BRG
Public Made by Adomby adom
Changjing Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3L. 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
markdownCJ78L05C-P3T-BRG
Changjing · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3L
CJ78L05C-P3T-BRG from Changjing, in a SOT-89-3L. 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 | OUT | output | Output of the regulator, fixed at 5.0V nominal for the CJ78L05C with output current up to 100mA. |
| 2 | GND | power_in | Regulator ground. |
| 3 | IN | input | Input to the device; the CJ78L05C input voltage is rated up to 30V, with a 36V absolute maximum input voltage. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SOT-89-3L |
| 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 |
|---|---|---|---|---|---|---|---|
| Input voltage | VIN | 30 | V | 8 | |||
| Output voltage, ±2% grade | VOUT | 4.9 | 5.1 | V | TJ = 25°C | 8 | |
| Output voltage over temperature and line/load | VOUT | 4.75 | 5 | 5.25 | V | VIN = 7 to 20V, IOUT = 1 to 100mA, TJ = -40 to 125°C, PD ≤ 0.75W | 8 |
| Output current | IOUT | 100 | mA | TJ = 25°C | 8 | ||
| Quiescent current | IQ | 3 | 5.5 | mA | IOUT = 0mA | 8 | |
| Quiescent current change | ΔIQ | 1.5 | mA | VIN = 8 to 20V, TJ = -40 to 125°C | 8 | ||
| Quiescent current change | ΔIQ | 0.1 | mA | IOUT = 1 to 40mA, TJ = -40 to 125°C | 8 | ||
| Dropout voltage | VDO | 1.7 | 2 | V | IOUT = 40mA | 8 | |
| Dropout voltage | VDO | 1.8 | 2.3 | V | IOUT = 100mA | 8 | |
| Line regulation | ΔVLINE | 8 | 150 | mV | VIN = 7 to 20V | 8 | |
| Load regulation | ΔVLOAD | 10 | 60 | mV | IOUT = 1 to 100mA | 8 | |
| Ripple rejection | RR | 47 | 62 | dB | VIN = 8 to 18V, f = 120Hz | 8 | |
| Output voltage temperature coefficient | ΔVOUT / ΔT | 0.42 | mV/°C | IOUT = 5mA | 8 | ||
| Output voltage temperature coefficient | ΔVOUT / (VOUT × ΔT) | 84 | ppm/°C | IOUT = 5mA | 8 | ||
| Output noise voltage | VN | 40 | µV | f = 10 to 100k Hz | 8 | ||
| Maximum input voltage (absolute maximum) | VIN MAX | 36 | V | 6 | |||
| Maximum junction temperature | TJ Max | 150 | °C | 6 | |||
| Storage temperature | Tstg | -65 | 150 | °C | 6 | ||
| Soldering temperature | Tsolder | 260 | °C | 10s | 6 | ||
| Electrostatic discharge, human body model | VESD-HBM | 2000 | V | Human body model (JESD22-114D) | 7 | ||
| Electrostatic discharge, machine model | VESD-MM | 200 | V | Machine model (JESD22-115-A) | 7 | ||
| Input voltage range (recommended) | VIN | 30 | V | CJ78L05C | 6 | ||
| Operating junction temperature | TJ | -40 | 125 | °C | 6 | ||
| Junction-to-ambient thermal resistance, SOT-89-3L | RΘJA | 121.6 | °C/W | Still air, TA = 25°C, 1 in² FR-4 with 2 oz copper | 7 | ||
| Junction-to-case thermal resistance, SOT-89-3L | RΘJC | 29.4 | °C/W | 7 | |||
| Reference maximum power dissipation for continuous operation, SOT-89-3L | PD Ref | 0.82 | W | Still air, TA = 25°C, 1 in² FR-4 with 2 oz copper | 7 |
CAD (KiCad official)
- Symbol:
CJ78L05C-P3T-BRG - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89-3L (KiCad packages3D, STEP)
- 3D model files:
cj78l05c-p3t-brg-etched.step/cj78l05c-p3t-brg-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cj78l05c-p3t-brg.step/cj78l05c-p3t-brg.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (30 pp, sha256
ccb056fb5d1abe3f, retrieved 2026-10-17, 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).