# CJ6386A50MR

**Changjing** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5L

CJ6386A50MR from Changjing, in a SOT-23-5L. 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 | VSS | power_in | Ground pin for the regulator; it is the common return and the reference for VIN and VOUT. |
| 2 | VIN | power_in | Power input; the datasheet specifies an operating supply range of 2.5V to 45V, with an absolute maximum input of -0.3V to 50V. |
| 3 | VOUT | power_out | Regulated output; the output voltage range is 2.1V to 12V and output current is rated up to 250mA. |
| 4 | NC | unconnected | No connection. |
| 5 | NC | unconnected | No connection. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SOT-23-5L |
| Category | Power Management (PMIC) |
| Pins | 5 |

## 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 | -0.3 |  | 50 | V |  | 3 |
| Output Voltage | VOUT | -0.3 |  | 12 | V |  | 3 |
| Power Dissipation | PD |  |  | 0.3 | W | SOT-23-3/5L | 3 |
| Operating Junction Temperature Range | Tj |  |  | 150 | °C |  | 3 |
| Storage Temperature | Tstg | -65 |  | 150 | °C |  | 3 |
| Lead Temperature | Tsolder |  |  | 260 | °C | Soldering, 10 sec | 3 |
| Supply voltage at VIN |  | 2.5 |  | 45 | V |  | 3 |
| Operating junction temperature range | Tj | -40 |  | 125 | °C |  | 3 |
| Operating free air temperature range | TA | -40 |  | 85 | °C |  | 3 |
| Output Current | IOUT |  |  | 250 | mA |  | 3 |
| Input Voltage | VIN | 2.5 |  | 45 | V |  | 4 |
| Output Voltage Range | VOUT | 2.1 |  | 12 | V |  | 4 |
| DC Output Accuracy |  | -2 |  | 2 | % | IOUT=10mA | 4 |
| DC Output Accuracy |  | -1 |  | 1 | % | IOUT=10mA | 4 |
| Supply Current | ISS |  | 2 | 10 | μA | IOUT=0A | 4 |
| Line Regulation | ΔVOUT/(VOUT×ΔVIN) |  | 0.01 | 0.3 | %/V | IOUT =10mA, VOUT +1V≤VIN≤36V | 4 |
| Temperature Coefficient | ΔVOUT/(VOUT×ΔTA) |  |  | 50 | ppm | IOUT=40mA, -40°C<TA<85°C | 4 |

## CAD (KiCad official)

- Symbol: `CJ6386A50MR`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5L (KiCad packages3D, STEP)
- 3D model files: `cj6386a50mr-etched.step` / `cj6386a50mr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cj6386a50mr.step` / `cj6386a50mr.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/8602918699749814272) (12 pp, sha256 `d7fca24d7313944f`, 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/cj6386a50mr-datasheet.pdf)