# PJ73HM50SC

**PJSEMI** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-3

PJ73HM50SC from PJSEMI, in a SOT-23-3. 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 reference pin for the regulator; the datasheet lists it only as 'Ground' with no electrical limits. |
| 2 | VOUT | power_out | Regulated output of the 5.0V (PJ73HM50SC) version, rated for 500mA within the package power dissipation limit, with an absolute maximum of -0.3V to 6V on this pin. |
| 3 | VIN | power_in | Power input with a 3V to 20V supply range and an absolute maximum of -0.3V to 25V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | PJSEMI |
| Package | SOT-23-3 |
| 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 |
|---|---|---|---|---|---|---|---|
| Input Voltage | VIN | 3 |  | 20 | V |  | 6 |
| Output Voltage Accuracy | ∆VOUT | -2 |  | 2 | % | VIN=VOUT+2V, IOUT=1mA | 6 |
| Output Current | IOUT | 500 |  |  | mA | Within PD(Max.) | 6 |
| Line Regulation | ∆VLINE |  |  | 6 | mV | VIN= 5~12V, IOUT=1mA | 6 |
| Load Regulation | ∆VLOAD |  |  | 20 | mV | VIN=12V, IOUT=1~100 mA | 6 |
| Input Voltage (absolute maximum) | VIN | -0.3 |  | 25 | V |  | 5 |
| Output Voltage (absolute maximum) | VOUT | -0.3 |  | 6 | V |  | 5 |
| Power Dissipation | PD |  |  | 0.4 | W |  | 5 |
| Thermal Resistance, Junction-to-Ambient |  |  |  | 220 | °C/W | SOT-23-3 | 5 |
| Junction Temperature |  | -40 |  | 125 | °C |  | 5 |
| Storage Temperature Range |  | -55 |  | 150 | °C |  | 5 |
| Lead Temperature |  |  |  | 260 | °C | 10S | 5 |
| Human Body Model ESD Level (HBM) |  |  |  | 5.5 | KV |  | 5 |
| Supply Voltage |  | 3 |  | 20 | V |  | 5 |
| Operating Junction Temperature |  | 0 |  | 125 | °C |  | 5 |
| Operating Ambient Temperature |  | -40 |  | 85 | °C |  | 5 |

## CAD (KiCad official)

- Symbol: `PJ73HM50SC`
- Footprint: `Package_TO_SOT_SMD:SOT-23-3`
- 3D model: SOT-23-3 (KiCad packages3D, STEP)
- 3D model files: `pj73hm50sc-etched.step` / `pj73hm50sc-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `pj73hm50sc.step` / `pj73hm50sc.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [PJSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8604428326723874816) (13 pp, sha256 `f9db79a996de996c`, retrieved 2026-10-18, 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/pj73hm50sc-datasheet.pdf)