# AP7351D-28W5-7

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

AP7351D-28W5-7 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, with input voltage specified from 1.4V to 5.5V (absolute maximum 6.0V). |
| 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 that must be driven high or low and must not float; high (at least 1.0V, up to 5.5V) enables the regulator and low (6.0V absolute maximum, 0.4V maximum for logic low) puts it into shutdown. |
| 4 | NC | unconnected | No connection for fixed VOUT versions. |
| 5 | VOUT | power_out | Regulated output voltage pin, rated for up to 150mA output current with ±1% VOUT accuracy above 2.0V. |

## 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 (TA = +25°C) |  | -1 |  | 1 | % | VOUT > 2.0V, IOUT = 5mA, TA = +25°C | 3 |
| Output Voltage Accuracy (TA = -40°C to +85°C) |  | -2 |  | 2 | % | VOUT > 2.0V, IOUT = 5mA, TA = -40°C to +85°C | 3 |
| Input Voltage |  | 1.4 |  | 5.5 | V | TA = -40°C to +85°C | 3 |
| Line Regulation |  |  | 0.05 | 0.2 | %/V | MAX (VOUT + 1.0V, 2.5V) ≤ VIN ≤ 5.5V (All Versions Except 4.5V) | 3 |
| Output Current |  | 150 |  |  | mA |  | 3 |
| Quiescent Current |  |  | 0.5 | 1 | µA | IOUT = 0mA | 3 |
| Standby Current (ISTANDBY) | ISTANDBY |  | 0.02 | 0.2 | µA | Set EN low, No load | 3 |
| Dropout Voltage (VOUT = 2.8V) |  |  | 0.19 | 0.4 | V | IOUT = 150mA; VOUT = 2.8V | 3 |
| EN Input Low Voltage |  |  |  | 0.4 | V |  | 3 |
| EN Input High Voltage |  | 1 |  | 5.5 | V |  | 3 |
| Thermal Resistance Junction to Ambient (θJA), SOT25 | θJA |  | 179 |  | °C/W |  | 3 |
| 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 |
| Input Voltage (absolute maximum) | VIN |  |  | 6 | V |  | 2 |
| Input Voltage for EN Pin (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 |
| Operating Ambient Temperature (absolute maximum) | TA | -40 |  | 85 | °C |  | 2 |
| Operating Junction Temperature | TJ |  |  | 125 | °C |  | 2 |
| Storage Temperature | TSTG | -55 |  | 125 | °C |  | 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 |

## 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-28W5-7`
- 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-28w5-7-etched.step` / `ap7351d-28w5-7-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ap7351d-28w5-7.step` / `ap7351d-28w5-7.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-28W5-7.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-28w5-7-datasheet.pdf)