# UCC27518AQDBVRQ1

**Texas Instruments** · Gate Drivers · SOT-23-5

UCC27518AQDBVRQ1 from Texas Instruments, in a SOT-23-5. 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 | EN | input | Enable input: driving EN low disables the output regardless of the input state, while EN high or floating enables the output; the datasheet gives typical V_EN-H of 2.1 V and V_EN-L of 1.25 V. |
| 2 | GND | power_in | Ground: all signals are referenced to this pin. |
| 3 | IN- | input | Inverting input of the UCC27518A-Q1: the output is held LOW if IN- is unbiased or floating. |
| 4 | OUT | output | Sourcing and sinking current output of the driver, rated for 4 A pulsed (0.5 µs) and 0.3 A continuous source/sink per the absolute maximum ratings. |
| 5 | VDD | power_in | Supply input: operating range is 4.5 V to 18 V, with an absolute maximum of 20 V (−0.3 V to 20 V). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-5 |
| Category | Motor Driver ICs |
| Pins | 5 |

## CAD (KiCad official)

- Symbol: `UCC27518AQDBVRQ1`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `ucc27518aqdbvrq1-etched.step` / `ucc27518aqdbvrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ucc27518aqdbvrq1.step` / `ucc27518aqdbvrq1.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/ucc27519a-q1) (26 pp, sha256 `a80dba3a4b84eb97`, retrieved 2026-10-08, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **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/ucc27518aqdbvrq1-datasheet.pdf)