# UCC2813QDR-2Q1

**Texas Instruments** · AC-DC Controllers And Regulators · SOIC-8

UCC2813QDR-2Q1 from Texas Instruments, 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 | COMP | output | COMP is the error amplifier output and the PWM comparator input, with feedback loop compensation applied between this pin and FB. |
| 2 | FB | input | FB is the inverting input of the error amplifier; keep the FB lead short and its stray capacitance small for best stability. |
| 3 | CS | input | CS is the input to the current-sense comparators (PWM and overcurrent), connected directly to the MOSFET source sense resistor, with a 100 ns leading-edge blanking interval and a 1.55 V typical overcurrent threshold. |
| 4 | RC | input | RC is the oscillator timing pin, where an external resistor (from REF) and capacitor (to GND) set the switching frequency (up to 1 MHz) and maximum duty cycle; recommended RT is 10 kΩ to 200 kΩ and CT is 100 pF to 1000 pF, and RT must never be below 10 kΩ. |
| 5 | GND | power_in | GND is the reference and power ground for all device functions and should be separated from the high-current gate driver return path. |
| 6 | OUT | output | OUT is the high-current power driver output for the power MOSFET gate, rated for peak current up to ±1 A, and is actively held low when VCC is below the UVLO threshold. |
| 7 | VCC | power_in | VCC is the bias supply input, with an absolute maximum of 12 V (recommended maximum 11 V from a low-impedance source, 30 mA absolute maximum ICC) and an internal zener clamp near 13.5 V, and requires a series current-limiting resistor and a 0.1 µF ceramic bypass to GND. |
| 8 | REF | power_out | REF is the 5 V voltage reference output for the UCC2813-2-Q1 (±1.5% at 25°C), limited to 5 mA output current, and requires at least a 0.1 µF ceramic bypass to GND. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `UCC2813QDR-2Q1`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `ucc2813qdr-2q1-etched.step` / `ucc2813qdr-2q1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ucc2813qdr-2q1.step` / `ucc2813qdr-2q1.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/ucc2813-0-q1) (47 pp, sha256 `114dd59e68535e9e`, 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/ucc2813qdr-2q1-datasheet.pdf)