# MD7130

**Shanghai Mingda Microelectronics** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-3L

MD7130 from Shanghai Mingda Microelectronics, in a SOT-23-3L. 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 terminal (接地端) of the regulator; the datasheet gives no further electrical limit for this pin. |
| 2 | VDD | power_in | Power input (电源输入端); the absolute maximum input voltage VIN is 18 V, and the part is specified for 18 V maximum input. |
| 3 | VOUT | power_out | Regulated output (输出端); VOUT must not exceed VIN+0.3 V, and output short-circuit current is limited to about 30 mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Shanghai Mingda Microelectronics |
| Package | SOT-23-3L |
| 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 |
|---|---|---|---|---|---|---|---|
| 输出电压 (Output voltage) | VOUT | 2.91 | 3 | 3.09 | V | VIN=5V, IOUT=10mA | 2 |
| 输出电流 (Output current) | IOUT | 25 | 30 |  | mA | VIN=5V | 2 |
| 输入输出压差 (Dropout voltage) | Vdrop |  | 40 | 60 | mV | IOUT=1mA | 2 |
| 输入稳定度 (Line regulation) | △VOUT △VIN·VOUT |  | 0.05 | 0.2 | ％/V | 4V≤VIN≤18V, IOUT=1mA | 2 |
| 负载稳定度 (Load regulation) | △VOUT2 |  | 60 | 100 | mV | VIN=5V, 1.0mA≤IOUT≤30mA | 2 |
| 输出电压温度系数 (Output voltage temperature coefficient) | △VOUT △Ta·VOUT | -100 | 50 | 100 | ppm/℃ | VIN=5V, IOUT=10mA, -40℃≤Ta≤85℃ | 2 |
| 静态电流 (Quiescent current) | ISS |  | 1.2 | 5 | uA | VIN=18V, no load | 2 |
| 输入电压 (Input voltage, max) | Vmax |  |  | 18 | V |  | 2 |
| 输出短路电流 (Output short-circuit current) | Ishort |  | 30 |  | mA | Vout=0V | 2 |
| 输入电压 (Absolute maximum input voltage) | VIN |  |  | 18 | V |  | 2 |
| 容许功耗 (Power dissipation, SOT23-3/5) | PD |  |  | 250 | mW | SOT23-3/5 package | 2 |
| 工作周围温度范围 (Operating ambient temperature) | Topr | -40 |  | 85 | ℃ |  | 2 |
| 保存周围温度范围 (Storage temperature) | Tstg | -40 |  | 125 | ℃ |  | 2 |
| 输入电容器 (Input capacitor CIN) | CIN | 1 |  |  | µF | Recommended input capacitor, 1.0 µF or more | 5 |
| 输出电容器 (Output capacitor CL, tantalum) | CL | 2.2 |  |  | µF | Tantalum capacitor, 2.2 µF or more | 5 |
| 输出电容器 (Output capacitor CL, aluminum electrolytic) | CL | 10 |  |  | µF | Aluminum electrolytic capacitor, 10.0 µF or more | 5 |

## CAD (KiCad official)

- Symbol: `MD7130`
- Footprint: `Package_TO_SOT_SMD:SOT-23-3`
- 3D model: SOT-23-3L (KiCad packages3D, STEP)
- 3D model files: `md7130-etched.step` / `md7130-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `md7130.step` / `md7130.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Shanghai Mingda Microelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588917401086283776) (12 pp, sha256 `a3ed5d5344bdc5d5`, retrieved 2026-10-21, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **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/md7130-datasheet.pdf)