# SSP7901P33MR

**Shanghai Siproin Microelectronics** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT23-3

SSP7901P33MR from Shanghai Siproin Microelectronics, in a SOT23-3. 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. |
| 2 | Vout | power_out | Regulated output; the datasheet limits Vout to Vss-0.3 V minimum and VIN+0.3 V maximum, with output current up to 300 mA. |
| 3 | Vin | power_in | Input supply pin; the datasheet gives a 2.2 V to 40 V input voltage range, with a 36 V maximum under recommended operating conditions. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Shanghai Siproin Microelectronics |
| Package | SOT23-3 |
| 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 accuracy (tolerance) |  | -2 |  | 2 | % |  | 1 |
| Input Voltage (absolute maximum) | VIN | -0.3 |  | 40 | V |  | 5 |
| Output Current (absolute maximum) | Iout |  |  | 300 | mA |  | 5 |
| Power Dissipation (absolute maximum) | PD |  |  | 220 | mW | SOT23-3 | 5 |
| Operating Ambient Temperature (absolute maximum) | Topr | -40 |  | 85 | ℃ |  | 5 |
| Storage Temperature | Tstg | -40 |  | 125 | ℃ |  | 5 |
| Input Voltage (recommended) | VIN | -0.3 |  | 36 | V |  | 5 |
| Operating Ambient Temperature (recommended) | Topr | -40 |  | 85 | ℃ |  | 5 |
| Line Regulation |  |  | 0.01 | 0.02 | ％/V | VOUT(S)+2V≤VIN≤36V, IOUT=10mA | 6 |
| Load Regulation | ΔVOUT2 |  | 40 | 90 | mV | VIN=Vout(S)+2V, 1mA≤IOUT≤300mA, Vout(S)≤10V | 6 |
| Temperature Stability |  | -50 |  | 50 | ppm/℃ | VIN = VOUT(S)+2V, IOUT=10mA, -40℃≤Ta≤85℃ | 6 |
| Quiescent Current | Iq | 1 | 1.6 | 3 | μA | no load, 3.0≤VOUT(S)≤40V | 6 |
| Input Voltage | VIN | 2.2 |  | 40 | V |  | 6 |
| Maximum Output Current | IOUTMAX |  |  | 300 | mA |  | 6 |
| Dropout Voltage | VDROP |  | 20 |  | mV | IOUT=10mA | 6 |
| Dropout Voltage | VDROP |  | 1380 |  | mV | IOUT=300mA | 6 |
| Output Voltage (nominal for this MPN) | VOUT(S) |  | 3.3 |  | V | VIN=VOUT(S)+2V, IOUT=10mA | 6 |

## CAD (KiCad official)

- Symbol: `SSP7901P33MR`
- Footprint: `Package_TO_SOT_SMD:SOT-23-3`
- 3D model: SOT23-3 (KiCad packages3D, STEP)
- 3D model files: `ssp7901p33mr-etched.step` / `ssp7901p33mr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ssp7901p33mr.step` / `ssp7901p33mr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Shanghai Siproin Microelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590907962447634432) (13 pp, sha256 `550c6ba0e8e0494a`, 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/ssp7901p33mr-datasheet.pdf)