component
CJ79L08
Public Made by Adomby adom
Changjing Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
| Name | Last updated |
|---|---|
| docs | 17d ago |
| viewers | 17d ago |
| cj79l08-etched.glb | 17d ago |
| cj79l08-etched.step | 17d ago |
| cj79l08-hero.glb | 17d ago |
| cj79l08-hero.overlay.json | 17d ago |
| cj79l08.glb | 17d ago |
| cj79l08.kicad_mod | 17d ago |
| cj79l08.kicad_sym | 17d ago |
| cj79l08.lbr | 17d ago |
| cj79l08.step | 17d ago |
| package.json | 17d ago |
| page.json | 17d ago |
| README.md | 17d ago |
CJ79L08
Changjing · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3
CJ79L08 from Changjing, in a SOT-89-3. 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 | GND | power_in | Ground (common) reference terminal of the negative regulator; the datasheet gives no further electrical limits for this pin. |
| 2 | IN | power_in | Regulator input, which takes the negative unregulated supply, with an absolute maximum input voltage Vl of -30 V and a 0.33 μF input capacitor recommended for stability. |
| 3 | OUT | power_out | Regulated negative output of -8 V (VO -7.7 V to -8.3 V at 25 ℃), rated for a maximum output current IOM of 0.1 A, with a 0.1 μF output bypass capacitor recommended. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SOT-89-3 |
| 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 | -7.7 | -8 | -8.3 | V | 25℃ | 1 |
| Output Voltage | Vo | -7.6 | -8 | -8.4 | V | -10.5V≤Vl≤-23V, Io=1mA~40mA | 1 |
| Load Regulation | ΔVo | 30 | 100 | mV | Io=1mA~100mA, 25℃ | 1 | |
| Load Regulation | ΔVo | 15 | 50 | mV | Io=1mA~40mA, 25℃ | 1 | |
| Line Regulation | ΔVo | 42 | 200 | mV | -10.5V≤Vl≤-23V, 25℃ | 1 | |
| Line Regulation | ΔVo | 36 | 150 | mV | -11V≤Vl≤-23V, 25℃ | 1 | |
| Quiescent Current | Iq | 4 | 6 | mA | 25℃ | 1 | |
| Quiescent Current Change | ΔIq | 1.5 | mA | -11V≤Vl≤-23V, 0-125℃ | 1 | ||
| Quiescent Current Change | ΔIq | 0.1 | mA | 1mA≤IO≤40mA, 0-125℃ | 1 | ||
| Output Noise Voltage | VN | 54 | uV | 10Hz≤f≤100KHz, 25℃ | 1 | ||
| Ripple Rejection | RR | 37 | 46 | dB | -11V≤Vl≤-21V, f=120Hz, 0-125℃ | 1 | |
| Dropout Voltage | Vd | 1.7 | V | 25℃ | 1 | ||
| Input Voltage | Vl | -30 | V | 1 | |||
| Operating Junction Temperature Range | TOPR | 0 | 150 | ℃ | 1 | ||
| Storage Temperature Range | TSTG | -55 | 150 | ℃ | 1 | ||
| Maximum Output Current | IOM | 0.1 | A | 1 | |||
| Continuous Total Dissipation | PD | 0.5 | W | 1 |
CAD (KiCad official)
- Symbol:
CJ79L08 - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files:
cj79l08-etched.step/cj79l08-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cj79l08.step/cj79l08.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (1 pp, sha256
1502b2dbccc7ffca, 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).