# AP2205-33W5-7

**Diodes Incorporated** · Linear Voltage Regulators (LDO) · SOT-25

AP2205-33W5-7 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, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VIN | power_in | Input voltage, 2.3V to 24V recommended operating range (36V absolute maximum). |
| 2 | GND | power_in | Ground. |
| 3 | EN | input | Enable input; logic high is 2.0V minimum and logic low is 0.4V maximum (36V absolute maximum). |
| 4 | ADJ/NC | unconnected | Adjust output for the ADJ version; not connected for the fixed version (AP2205-33 is a fixed 3.3V part, so leave it not connected). |
| 5 | VOUT | power_out | Regulated output voltage, 3.3V fixed for this part, up to 200mA output current. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-25 |
| Category | Power Supply Chip |
| 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 Variation from Specified VOUT | VOUT | 98 |  | 102 | % of VOUT | VIN = VOUT+1V, IOUT = 100µA, TJ = +25°C | 5 |
| Input Voltage | VIN | 2.3 |  | 24 | V |  | 5 |
| Maximum Output Current | IOUT(MAX) | 200 | 250 |  | mA | VIN-VOUT = 1V, VOUT = 98% VOUT | 5 |
| Dropout Voltage | VDROP |  | 100 | 150 | mV | IOUT = 100µA | 5 |
| Dropout Voltage | VDROP |  | 270 | 350 | mV | IOUT = 50mA | 5 |
| Dropout Voltage | VDROP |  | 320 | 460 | mV | IOUT = 100mA | 5 |
| Dropout Voltage | VDROP |  | 360 | 500 | mV | IOUT = 150mA | 5 |
| Standby Current | ISTD |  | 0.01 | 1 | µA | VIN = VOUT+1V, VEN in OFF Mode | 5 |
| EN High Voltage |  | 2 |  |  | V | EN Input Voltage High | 5 |
| EN Low Voltage |  |  |  | 0.4 | V | EN Input Voltage Low | 5 |
| Supply Input Voltage (recommended) | VIN | 2.3 |  | 24 | V |  | 4 |
| Operating Junction Temperature (recommended) | TJ | -40 |  | 125 | °C |  | 4 |
| Output Current (recommended) | IOUT |  |  | 200 | mA | VOUT > 1.8V | 4 |
| Supply Input Voltage (abs max) | VIN |  |  | 36 | V |  | 4 |
| Enable Input Voltage (abs max) | VCE |  |  | 36 | V |  | 4 |
| Output Current (abs max) | IOUT |  |  | 250 | mA |  | 4 |
| Lead Temperature | TLEAD |  |  | 260 | °C | Soldering, 10sec | 4 |
| Operating Junction Temperature (abs max) | TJ |  |  | 150 | °C |  | 4 |
| Storage Temperature Range | TSTG | -65 |  | 150 | °C |  | 4 |
| ESD (Charge Device Model) |  |  |  | 1000 | V |  | 4 |
| ESD (Human Body Model) |  |  |  | 2000 | V |  | 4 |
| Thermal Resistance Junction-to-Ambient SOT25 | θJA |  | 160 |  | °C/W | 2-Layer FR-4 PCB, 1.5cm*1.5cm thermal sink pad, free air | 4 |
| Thermal Resistance Junction-to-Case SOT25 | θJC |  | 29 |  | °C/W |  | 4 |
| Reference Voltage | VREF | 1.215 | 1.24 | 1.265 | V |  | 5 |
| Line Regulation | ΔVOUT/ΔVIN |  | 0.05 |  | % | VOUT + 1V ≤ VIN ≤ 24V | 5 |
| Load Regulation | ΔVOUT/VOUT |  | 0.5 |  | % | 1mA ≤ IOUT ≤ 200mA | 5 |
| Ground Current | IGND |  | 36 |  | µA | IOUT = 100µA | 5 |
| Ground Current | IGND |  | 0.5 |  | mA | IOUT = 50mA | 5 |
| Ground Current | IGND |  | 1.3 |  | mA | IOUT = 100mA | 5 |
| Ground Current | IGND |  | 2.5 |  | mA | IOUT = 150mA | 5 |
| Power Supply Rejection Ratio | PSRR |  | 60 |  | dB | Ripple 0.5VP-P, VIN = VOUT+1V, f = 100Hz | 5 |
| Output Voltage Temperature Coefficient | ΔVOUT/(VOUT·ΔT) |  | 100 |  | ppm/°C | IOUT = 100µA, -40°C ≤ TJ ≤ +125°C | 5 |
| RMS Output Noise | VNOI |  | 30 |  | µVRMS | TJ = +25°C, 10Hz ≤ f ≤ 100kHz | 5 |
| ADJ Pin Current | IADJ |  | 0.5 |  | µA | IOUT = 100µA | 5 |
| EN Pin Current | IEN |  | 3 |  | µA | VEN = VOUT + 1V | 5 |

## 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 |
|---|---|---|---|---|
| housing | Abs |  |, ESD (Human Body Model) 2000 V Notes: 5. Stresses greater than those listed under “Absolute Maximum Ratings” can cause permanent damage to the device. These are stress ratings only, and | 4 |
| contacts |  | tin |  Terminals: SOT89/SOT25: Finish, Mate Tin Plated Leads, Solderable per MIL-STD-202, Method 208  Weight: | 15 |

## CAD (KiCad official)

- Symbol: `AP2205-33W5-7`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-25 (KiCad packages3D, STEP)
- 3D model files: `ap2205-33w5-7-etched.step` / `ap2205-33w5-7-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ap2205-33w5-7.step` / `ap2205-33w5-7.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/AP2205-33W5-7.pdf) (16 pp, sha256 `ce4c5ce349628e9a`, retrieved 2026-10-22, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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/ap2205-33w5-7-datasheet.pdf)