# UCC2808DTR-1

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

UCC2808DTR-1 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 | bidirectional | Output of error amplifier and input of PWM comparator; soft-start internally clamps maximum voltage. |
| 2 | FB | input | Inverting input to error amplifier; rated -0.3V to VDD+0.3V (max 6V); minimize lead length and stray capacitance. |
| 3 | CS | input | Current sense input to PWM, peak current, and overcurrent comparators; rated -0.3V to VDD+0.3V (max 6V). |
| 4 | RC | input | Oscillator programming pin; external RC network sets frequency (recommended RT 10-200kΩ, CT 100-1000pF). |
| 5 | GND | power_in | Reference and power ground for all functions; low-impedance PCB ground plane required. |
| 6 | OUTB | output | Alternating high-current output stage; 500mA peak source current, 1A peak sink current, operates at half oscillator frequency. |
| 7 | OUTA | output | Alternating high-current output stage; 500mA peak source current, 1A peak sink current, operates at half oscillator frequency. |
| 8 | VDD | power_in | Power supply input; 13-14V operating range for UCC2808-1 variant, 130-260µA startup current, 1-2mA operating current. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `UCC2808DTR-1`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `ucc2808dtr-1-etched.step` / `ucc2808dtr-1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ucc2808dtr-1.step` / `ucc2808dtr-1.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/ucc2808-2) (23 pp, sha256 `a5c633f933a10add`, retrieved 2026-10-05, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-4-5-20251001` (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/ucc2808dtr-1-datasheet.pdf)