# CJ78L06

**Changjing** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3L

CJ78L06 from Changjing, in a SOT-89-3L. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | OUT | power_out | Regulated +6 V output (5.7-6.3 V over line/load/temperature). Sources up to 100 mA. A 0.1 uF ceramic bypass capacitor to GND, mounted close to the pin, is recommended for stability and transient response. |
| 2 | GND | power_in | Common ground reference for the input and output. Also the SOT-89 heat-slug tab pin providing the thermal path to the PCB copper. |
| 3 | IN | power_in | Unregulated input, absolute maximum 30 V. Must be at least ~1.7 V above VOUT (typical dropout at 25 C) for regulation. A 0.33 uF ceramic input capacitor to GND, mounted close to the pin, is recommended. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SOT-89-3L |
| Category | PMIC |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `CJ78L06`
- Footprint: `Package_TO_SOT_SMD:SOT-89-3`
- 3D model: SOT-89-3L (KiCad packages3D, STEP)
- 3D model files: `cj78l06-etched.step` / `cj78l06-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cj78l06.step` / `cj78l06.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Changjing datasheet](docs/cj78l06-datasheet.pdf) (2 pp, sha256 `0bb7b79dfa16ab12`, retrieved 2026-08-17, tier: lcsc)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/cj78l06-datasheet.pdf)