# APX809S-44SR-7

**Diodes Incorporated** · Supervisor And Reset ICs · SOT-23

APX809S-44SR-7 from Diodes Incorporated, in a SOT-23. 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 | /RESET | output | Push-pull active-low reset output on the APX809S (SR package), which is guaranteed to be in the correct logic state for VCC down to 1 V, with a 20 mA absolute maximum output current and a -0.3 V to 6.0 V voltage rating. |
| 2 | GND | power_in | Ground reference pin for the device, with the VCC operating range of 1.0 V to 5.5 V referenced to it. |
| 3 | VCC | power_in | Operating voltage input with a recommended supply range of 1.0 V to 5.5 V and an absolute maximum rating of -0.3 V to 6.0 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-23 |
| 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 |
|---|---|---|---|---|---|---|---|
| Recommended operating ambient temperature range | TA | -40 |  | 125 | °C | @TA = +25°C, unless otherwise specified | 3 |
| Recommended supply voltage | VCC | 1 |  | 5.5 | V | @TA = +25°C, unless otherwise specified | 3 |
| RESET/RESET output voltage | VRESET | 0 |  | 5.5 | V | @TA = +25°C, unless otherwise specified | 3 |
| Supply voltage | VCC | -0.3 |  | 6 | V |  | 3 |
| RESET/RESET voltage | VRESET | -0.3 |  | 6 | V |  | 3 |
| Input current | ICC |  |  | 20 | mA |  | 3 |
| Output current | IO |  |  | 20 | mA |  | 3 |
| ESD HBM (Human Body Model) | ESD |  |  | 6000 | V | HBM (Human Body Model) | 3 |
| ESD MM (Machine Model) | ESD |  |  | 600 | V | MM (Machine Model) | 3 |
| Junction temperature range | TJ | -40 |  | 150 | °C |  | 3 |
| Storage temperature range | TSTG | -65 |  | 150 | °C |  | 3 |
| Reset threshold voltage (APX809SXX/810SXX-44) | VTH | 4.32 | 4.38 | 4.44 | V | TA = +25°C; APX809SXX/810SXX-44 | 4 |
| Reset active timeout period (APX809S/810S-XX, 240ms version) | tDELAY | 140 | 240 | 280 | ms | VCC ≥ 1.02 x VTH | 4 |
| RESET output voltage low (APX809S) | VOL |  |  | 0.3 | V | VCC = VTH - 0.2V, ISINK = 1.2mA | 4 |
| RESET output voltage low (APX809S) | VOL |  |  | 0.4 | V | VCC = VTH - 0.2V, ISINK = 3.2mA | 4 |
| Supply current | ICC |  | 7 | 16 | μA | VTH + 0.2V | 4 |

## CAD (KiCad official)

- Symbol: `APX809S-44SR-7`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `apx809s-44sr-7-etched.step` / `apx809s-44sr-7-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `apx809s-44sr-7.step` / `apx809s-44sr-7.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Diodes Incorporated datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603089438947745792) (10 pp, sha256 `b644892b2c8d0948`, retrieved 2026-10-19, tier: lcsc)
- **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/apx809s-44sr-7-datasheet.pdf)