component
CJ79L15
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.
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CJ79L15
Changjing · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3
CJ79L15 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 | Common ground reference pin for the negative regulator; the datasheet gives no separate limit for this pin. |
| 2 | IN | power_in | Negative unregulated input, with an absolute maximum input voltage Vi of -35 V and an input capacitor Ci of 0.33 µF recommended in the typical application. |
| 3 | OUT | power_out | Regulated negative output of -15 V (typ.) with a maximum output current of 100 mA; a 0.1 µF output capacitor Co is recommended close to the regulator for stability and transient response. |
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 | -14.4 | -15 | -15.6 | V | 25℃ | 1 |
| Output voltage | Vo | -14.25 | -15 | -15.75 | V | -17.5V≤Vi≤-30V, Io=1mA~40mA | 1 |
| Load Regulation | ΔVo | 25 | 150 | mV | Io=1mA~100mA, Vi=-23V, 25℃ | 1 | |
| Load Regulation | ΔVo | 15 | 75 | mV | Io=1mA~40mA, Vi=-23V, 25℃ | 1 | |
| Line regulation | ΔVo | 65 | 300 | mV | -17.5V≤Vi≤-30V, Io=40mA, 25℃ | 1 | |
| Line regulation | ΔVo | 50 | 250 | mV | -20V≤Vi≤-30V, Io=40mA, 25℃ | 1 | |
| Ripple Rejection | RR | 34 | 39 | dB | -18.5V≤Vi≤-28.5V, f=120Hz, 0-125℃ | 1 | |
| Input Voltage | Vi | -35 | V | 1 | |||
| Continuous total dissipation | PD | 0.5 | W | 1 | |||
| Operating Junction Temperature Range | TOPR | 0 | 125 | ℃ | 1 | ||
| Storage Temperature Range | TSTG | -55 | 150 | ℃ | 1 |
CAD (KiCad official)
- Symbol:
CJ79L15 - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files:
cj79l15-etched.step/cj79l15-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cj79l15.step/cj79l15.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (3 pp, sha256
a0d741f6e9836e8e, 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).
# CJ79L15
**Changjing** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3
CJ79L15 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 | Common ground reference pin for the negative regulator; the datasheet gives no separate limit for this pin. |
| 2 | IN | power_in | Negative unregulated input, with an absolute maximum input voltage Vi of -35 V and an input capacitor Ci of 0.33 µF recommended in the typical application. |
| 3 | OUT | power_out | Regulated negative output of -15 V (typ.) with a maximum output current of 100 mA; a 0.1 µF output capacitor Co is recommended close to the regulator for stability and transient response. |
## 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 | -14.4 | -15 | -15.6 | V | 25℃ | 1 |
| Output voltage | Vo | -14.25 | -15 | -15.75 | V | -17.5V≤Vi≤-30V, Io=1mA~40mA | 1 |
| Load Regulation | ΔVo | | 25 | 150 | mV | Io=1mA~100mA, Vi=-23V, 25℃ | 1 |
| Load Regulation | ΔVo | | 15 | 75 | mV | Io=1mA~40mA, Vi=-23V, 25℃ | 1 |
| Line regulation | ΔVo | | 65 | 300 | mV | -17.5V≤Vi≤-30V, Io=40mA, 25℃ | 1 |
| Line regulation | ΔVo | | 50 | 250 | mV | -20V≤Vi≤-30V, Io=40mA, 25℃ | 1 |
| Ripple Rejection | RR | 34 | 39 | | dB | -18.5V≤Vi≤-28.5V, f=120Hz, 0-125℃ | 1 |
| Input Voltage | Vi | -35 | | | V | | 1 |
| Continuous total dissipation | PD | | | 0.5 | W | | 1 |
| Operating Junction Temperature Range | TOPR | 0 | | 125 | ℃ | | 1 |
| Storage Temperature Range | TSTG | -55 | | 150 | ℃ | | 1 |
## CAD (KiCad official)
- Symbol: `CJ79L15`
- Footprint: `Package_TO_SOT_SMD:SOT-89-3`
- 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files: `cj79l15-etched.step` / `cj79l15-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cj79l15.step` / `cj79l15.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Changjing datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586174251745755136) (3 pp, sha256 `a0d741f6e9836e8e`, retrieved 2026-10-17, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-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).
[Datasheet PDF](docs/cj79l15-datasheet.pdf)