# AP7351D-25W5-7

**Diodes Incorporated** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-25

AP7351D-25W5-7 from Diodes Incorporated, in a SOT-25. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model). Symbol and footprint from KiCad-official CAD; the 3D model is generated from the datasheet's package dimensions.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VIN | power_in | Power input pin; the input voltage range is 1.4V to 5.5V, with a 6.0V absolute maximum rating. |
| 2 | GND | power_in | Ground pin, which should be connected to the external circuit ground to reduce voltage drop caused by trace impedance. |
| 3 | EN | input | Enable pin must be driven high or low and must not float; a high level (minimum 1.0V) enables the regulator, a low level (maximum 0.4V) puts it in shutdown, and the absolute maximum rating is 6.0V. |
| 4 | NC | unconnected | No connection for fixed VOUT versions. |
| 5 | VOUT | power_out | Output voltage pin, which delivers a guaranteed output current of 150mA and is rated from -0.3V to VIN + 0.3V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-25 |
| Category | Power Management (PMIC) |
| Pins | 5 |

## 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 (VOUT > 2.0V, TA = +25°C) |  | -1 |  | 1 | % | VOUT > 2.0V, IOUT = 5mA, TA = +25°C | 3 |
| Output Voltage Accuracy (VOUT > 2.0V, TA = -40°C to +85°C) |  | -2 |  | 2 | % | VOUT > 2.0V, IOUT = 5mA, TA = -40°C to +85°C | 3 |
| Dropout Voltage (VOUT = 2.5V) |  |  | 0.22 | 0.48 | V | IOUT = 150mA; VOUT = 2.5V | 3 |
| Quiescent Current |  |  | 0.5 | 1 | µA | IOUT = 0mA | 3 |
| Standby Current | ISTANDBY |  | 0.02 | 0.2 | µA | Set EN low, No load | 3 |
| Line Regulation |  |  | 0.05 | 0.2 | %/V | MAX (VOUT + 1.0V, 2.5V) ≤ VIN ≤ 5.5V (All Versions Except 4.5V) | 3 |
| Input Voltage | VIN | 1.4 |  | 5.5 | V | TA = -40°C to +85°C | 3 |
| EN Input Low Voltage | VEN |  |  | 0.4 | V |  | 3 |
| EN Input High Voltage | VEN | 1 |  | 5.5 | V |  | 3 |
| Thermal Resistance Junction to Ambient (SOT25) | θJA |  | 179 |  | °C/W |  | 3 |
| Input Voltage (absolute maximum, VIN) | VIN |  |  | 6 | V |  | 2 |
| Enable Input Voltage (absolute maximum) | VEN |  |  | 6 | V |  | 2 |
| Output Voltage (absolute maximum) | VOUT | -0.3 |  |  | V | Upper limit printed as VIN + 0.3 | 2 |
| Power Dissipation | PD |  |  | 400 | mW |  | 2 |
| ESD HBM | ESD HBM | 2 |  |  | kV | Human Body Model; printed as > 2 kV | 2 |
| ESD CDM | ESD CDM | -500 |  | 500 | V | Charge Device Model; printed as ±500 V | 2 |
| Operating Ambient Temperature (absolute maximum) | TA | -40 |  | 85 | °C |  | 2 |
| Operating Junction Temperature | TJ |  |  | 125 | °C |  | 2 |
| Storage Temperature | TSTG | -55 |  | 125 | °C |  | 2 |
| Input Voltage (recommended) | VIN | 1.4 |  | 5.5 | V |  | 2 |
| Output Current (recommended) | IOUT | 0 |  | 150 | mA |  | 2 |
| Operating Ambient Temperature (recommended) | TA | -40 |  | 85 | °C |  | 2 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts |  | tin | • Terminals:  SOT25: Finish - Mate Tin Plated Leads, Solderable per MIL￾STD-202, Method 208 | 1 |

## CAD (land: KiCad; 3D: generated from the datasheet)

- Symbol: `AP7351D-25W5-7`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-25, generated on the KiCad land (body 1.6 x 2.8 mm, terminals on the pads, 1.1 mm tall, datasheet A, nominal). KiCad's stock model for this land is taller than the datasheet allows, so the model is generated from the datasheet drawing; the dimensions come from the datasheet drawing where it was read and are defaults otherwise (see provenance.model_3d_generated), not the manufacturer's CAD (STEP)
- 3D model files: `ap7351d-25w5-7-etched.step` / `ap7351d-25w5-7-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ap7351d-25w5-7.step` / `ap7351d-25w5-7.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Diodes Incorporated datasheet](https://www.diodes.com/assets/Datasheets/AP7351D-25W5-7.pdf) (18 pp, sha256 `4cd3008f2ae9a291`, retrieved 2026-11-13, tier: manufacturer)
- **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:** land: KiCad official libraries (CC-BY-SA 4.0); 3D: generated from the datasheet's package dimensions (provenance.model_3d_generated).

[Datasheet PDF](docs/ap7351d-25w5-7-datasheet.pdf)