# PJ75BL50SC

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

PJ75BL50SC 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, to which the input and output capacitors are connected. |
| 2 | VOUT | power_out | Regulated output; the datasheet recommends a 1μF to 10μF output capacitor with ESR from 5mΩ to 100mΩ, placed as close as possible to OUT and GND. |
| 3 | VIN | power_in | Power input with a supply range of 3V to 36V (absolute maximum -0.3V to +40V), decoupled by a 1μF to 10μF ceramic capacitor to GND. |

## 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 |  | 36 | V |  | 6 |
| Output Voltage Accuracy | ΔVOUT | -2 |  | 2 | % | IOUT=1mA | 6 |
| Quiescent Current | IQ |  | 2.5 | 4 | μA | IOUT=0mA | 6 |
| Dropout Voltage | VDROP |  |  | 990 | mV | VOUT=5.0V IOUT=150mA | 6 |
| Dropout Voltage | VDROP |  |  | 600 | mV | VOUT=5.0V IOUT=100mA | 6 |
| Line Regulation | ΔVLINE |  |  | 0.2 | %/V | VIN=VOUT+2V to 30V IOUT=10mA | 6 |
| Load Regulation | ΔVLOAD |  | 5 | 20 | mV | VIN=VOUT+2V, 1mA<IOUT<150mA | 6 |
| Maximum Output Current | IOUT(Max) |  | 200 |  | mA |  | 6 |
| Short Current Protection | IShort |  | 100 |  | mA | OUT Short to GND | 6 |
| Output Noise | eN |  | 120 |  | μVRMS | 10Hz to 100KHz IOUT=30mA | 6 |
| Power Supply Rejection Ratio | PSRR |  | 68 |  | dB | VIN=12V, IOUT=1mA, f=1KHz | 6 |
| Supply Voltage |  | -0.3 |  | 40 | V |  | 5 |
| Power Dissipation SOT-23-3 |  |  |  | 400 | mW |  | 5 |
| Thermal Resistance, Junction-to-Ambient SOT-23-3 |  |  | 380 |  | °C/W |  | 5 |
| Operating Junction Temperature |  | -40 |  | 125 | °C |  | 5 |
| Storage Temperature Range |  | -65 |  | 150 | °C |  | 5 |
| Lead Temperature (Soldering, 10 sec) |  |  |  | 300 | °C | 10 sec | 5 |
| ESD Voltage |  | -4000 |  | 4000 | V | HBM | 5 |
| Supply Voltage |  | 3 |  | 36 | V |  | 5 |
| Maximum Output Current |  |  |  | 200 | mA |  | 5 |
| Operating Ambient Temperature |  | -40 |  | 125 | °C |  | 5 |

## CAD (KiCad official)

- Symbol: `PJ75BL50SC`
- Footprint: `Package_TO_SOT_SMD:SOT-23-3`
- 3D model: SOT-23-3 (KiCad packages3D, STEP)
- 3D model files: `pj75bl50sc-etched.step` / `pj75bl50sc-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `pj75bl50sc.step` / `pj75bl50sc.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [PJSEMI datasheet](docs/pj75bl50sc-datasheet.pdf) (20 pp, sha256 `a077a4a194a866ac`, retrieved 2026-10-27, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `off` (skipped (clean text read)), 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/pj75bl50sc-datasheet.pdf)