# IR4427STRPBF

**Infineon Technologies** · Gate Drivers · SOIC-8

IR4427STRPBF from Infineon Technologies, in a SOIC-8. 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 | NC | unconnected | No connect; pin 1 is shown as NC in the typical connection diagram and has no function in the lead definitions. |
| 2 | INA | input | Logic input for gate driver output OUTA, in phase for IR4427, with CMOS Schmitt-triggered input, VIH min 2.7V, VIL max 0.8V, and range -0.3V to VS+0.3V. |
| 3 | GND | power_in | Ground reference for all voltages. |
| 4 | INB | input | Logic input for gate driver output OUTB, in phase for IR4427, with CMOS Schmitt-triggered input, VIH min 2.7V, VIL max 0.8V, and range -0.3V to VS+0.3V. |
| 5 | OUTB | output | Gate drive output B with 1.5A source and 1.5A sink minimum pulsed short-circuit current, swinging 0 to VS. |
| 6 | VS | power_in | Supply voltage, recommended 6V to 20V, absolute maximum 25V. |
| 7 | OUTA | output | Gate drive output A with 1.5A source and 1.5A sink minimum pulsed short-circuit current, swinging 0 to VS. |
| 8 | NC | unconnected | No connect; pin 8 is shown as NC in the typical connection diagram and has no function in the lead definitions. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Infineon Technologies |
| Package | SOIC-8 |
| Category | Motor Driver ICs |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `IR4427STRPBF`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `ir4427strpbf-etched.step` / `ir4427strpbf-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ir4427strpbf.step` / `ir4427strpbf.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Infineon Technologies datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588879889718259712) (12 pp, sha256 `577060abc1c431a8`, retrieved 2026-10-09, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/ir4427strpbf-datasheet.pdf)