# UCC2807DTR-3

**Texas Instruments** · DC-DC Converters · SOIC-8

UCC2807DTR-3 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 | TRIG | input | Oscillator timing input with an RC-type charge/discharge signal controlling the internal oscillator; signal minimum 1/3 VDD, maximum 2/3 VDD. |
| 2 | COMP | output | Output of the error amplifier and input of the PWM comparator; can source and sink current, and forcing it to GND gives zero duty cycle. |
| 3 | FB | input | Inverting input to the error amplifier; keep connections short and stray capacitance small for best stability. |
| 4 | CS | input | Current sense input to the PWM and overcurrent comparators, with 100ns leading edge blanking after the rising edge at OUT; absolute maximum -0.3V to VDD+0.3V. |
| 5 | GND | power_in | Reference ground and power ground for all functions of the part. |
| 6 | OUT | output | High current totem pole power driver output for a power MOSFET gate, with peak currents exceeding 1A (absolute maximum ±1A), actively held low when VDD is below the UVLO threshold. |
| 7 | VDD | power_in | Power input connection; absolute maximum supply voltage 13.5V (IDD ≤10mA), UCCx807-3 start threshold 4.3V typ and turn-off 4.1V typ, bypass to GND with a ceramic capacitor close to the chip. |
| 8 | DISCH | passive | Provides the low impedance discharge path for the external RC timing network during normal oscillator operation. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `UCC2807DTR-3`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `ucc2807dtr-3-etched.step` / `ucc2807dtr-3-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ucc2807dtr-3.step` / `ucc2807dtr-3.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/ucc2807-3) (15 pp, sha256 `18e438c9fefd4905`, retrieved 2026-10-08, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (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/ucc2807dtr-3-datasheet.pdf)