# AP7361C-33ER-13

**Diodes Incorporated** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223R

AP7361C-33ER-13 from Diodes Incorporated, in a SOT-223R. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | GND | power_in | Device ground and thermal reference. Also connected to the tab. |
| 2 | OUT | power_out | Regulated 3.3V output. Bypass to ground through at least a 2.2µF ceramic capacitor; larger COUT improves AC load response. Max continuous output current 1A; internal current limit ~1.5A typ; short-circuit current ~400mA. |
| 3 | IN | power_in | Regulator input supply, 2.2V to 6.0V recommended (absolute max 6.5V). Bypass to ground through at least a 1µF ceramic capacitor close to the pin. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-223R |
| Category | PMIC |
| Pins | 3 |

## Ordering variants

- `AP7361C-33ER-13`
- `AP7361C-33ER-13E`
- `AP7361C-33ER-13D`
- `AP7361C-33ER-13DR`
- `AP7361C-33ER-13Y5`
- `AP7361C-33ER-13FGE`
- `AP7361C-33ER-13SP`
- `AP7361C-33ER-13SPR`

## 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 (1.5V≤VOUT≤3.3V) | VOUT | 0.99 |  | 1.01 | ×VOUT(s) | IOUT = 100mA, TA = +25°C; 1.5V≤VOUT≤3.3V | 5 |
| Line Regulation |  |  | 0.01 | 0.1 | %/V | VIN = VOUT +1V to 5.5V, IOUT = 100mA, TA = +25°C | 5 |
| Line Regulation |  |  |  | 0.2 | %/V | VIN = VOUT +1V to 5.5V, IOUT = 100mA, -40°C ≤ TA ≤ +85°C | 5 |
| Load Regulation (1.2V<VOUT≤3.3V) | ΔVOUT/VOUT | -1 |  | 1 | % | IOUT from 1.0mA to 1A | 5 |
| Dropout Voltage (2.6V≤VOUT≤3.3V) | VDROPOUT |  | 90 | 140 | mV | IOUT = 300mA | 5 |
| Input Quiescent Current | IQ |  | 60 | 80 | µA | Enabled, IOUT = 0A | 5 |
| Input Shutdown Current | ISHDN | -1 | 0.05 | 1 | µA | VEN = 0V, IOUT = 0A | 5 |
| Maximum Output Current | IOUT | 1 |  |  | A | VIN = VOUT +1V | 5 |
| Current Limit | ILIMIT | 1.1 | 1.5 |  | A | VIN = VOUT +1V (VIN MIN = 2.2V) | 5 |
| EN Input Logic Low Voltage | VIL | 0 |  | 0.3 | V |  | 5 |
| EN Input Logic High Voltage | VIH | 1 |  |  | V |  | 5 |
| EN Input Leakage Current | IEN | -0.1 |  | 0.1 | µA | VIN = 5.5V, VEN = 0V | 5 |
| Output Voltage Temperature Coefficient | ΔVOUT/(VOUT×ΔT) | -100 |  | 100 | ppm/°C | IOUT = 100mA, -40°C ≤ TA ≤ +85°C | 5 |
| Input Voltage | VIN | 2.2 |  | 6 | V |  | 4 |
| Output Voltage | VOUT | 0.8 |  | 5 | V |  | 4 |
| Output Current | IOUT | 0 |  | 1 | A |  | 4 |
| Operating Ambient Temperature | TA | -40 |  | 85 | °C |  | 4 |
| Input Voltage | VIN |  |  | 6.5 | V |  | 4 |
| Operating Junction Temperature Range | TJ | -40 |  | 150 | °C |  | 4 |
| Storage Temperature Range | TSTG | -65 |  | 150 | °C |  | 4 |
| ESD HBM Human Body Model ESD Protection |  | 2 |  |  | KV | Human Body Model; datasheet prints '> 2 KV' | 4 |
| ESD MM Machine Model ESD Protection |  | 200 |  |  | V | Machine Model (Note 5); datasheet prints '> 200 V' | 4 |

## CAD (KiCad official)

- Symbol: `AP7361C-33ER-13`
- Footprint: `Package_TO_SOT_SMD:SOT-223-3_TabPin2`
- 3D model: SOT-223R (KiCad packages3D, STEP)
- 3D model files: `ap7361c-33er-13-etched.step` / `ap7361c-33er-13-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ap7361c-33er-13.step` / `ap7361c-33er-13.glb` are the bare package body.

## 3D model downloads

Two STEP files. Same geometry, different body top:

| File | Size | Use it when |
|---|---|---|
| [`ap7361c-33er-13.step`](ap7361c-33er-13.step) | 64 KB | You want the bare part, or you mark your own boards. |
| [`ap7361c-33er-13-etched.step`](ap7361c-33er-13-etched.step) | 2.6 MB | You want the part with `AP7361C-33ER-13` already on it. |

The marking in the etched file is real recessed geometry cut into the solid, not a
texture or a decal: 632 faces against 75 in the bare model. It
survives export, section views, and rendering in any CAD tool, and it drops straight
into KiCad or Fusion with no extra setup.

## Provenance

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

- **Datasheet:** [Diodes Incorporated datasheet](docs/ap7361c-33er-13-datasheet.pdf) (22 pp, sha256 `9b64f49c5975b2ba`, retrieved 2026-08-17, tier: lcsc)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/ap7361c-33er-13-datasheet.pdf)