# UCC28083DR

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

UCC28083DR 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 | CTRL | input | Error voltage input to the PWM comparator, with an internal divider ratio of 0.45 and absolute limits of -0.3 V to VDD + 0.3 V. |
| 2 | ISET | input | Slope-compensation current select: a resistor RSET from ISET to ground sets the ramp, with RSET required to be greater than 5 kΩ. |
| 3 | CS | input | Current-sense input to the PWM comparator, cycle-by-cycle current limit and overcurrent comparator, with an overcurrent threshold of 0.70 to 0.80 V and absolute limits of -0.3 V to VDD + 0.3 V, not to exceed 6 V. |
| 4 | RT | input | Oscillator programming pin: an external resistor to GND sets the oscillator frequency, with a recommended resistor range of 25 kΩ to 698 kΩ and RT voltage limits of -0.3 V to 2.0 V. |
| 5 | GND | power_in | Reference and power ground for all functions; a low-impedance ground plane is highly recommended due to high currents and high-frequency operation. |
| 6 | OUTB | output | Alternating high-current push-pull output stage capable of 500 mA peak source and 1 A peak sink to drive a power MOSFET gate. |
| 7 | OUTA | output | Alternating high-current push-pull output stage capable of 500 mA peak source and 1 A peak sink to drive a power MOSFET gate. |
| 8 | VDD | power_in | Power input with a supply voltage rating of 15 V maximum (IDD < 10 mA) and a 20 mA maximum supply current; bypass to GND with a 1-µF decoupling capacitor. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `UCC28083DR`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `ucc28083dr-etched.step` / `ucc28083dr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ucc28083dr.step` / `ucc28083dr.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/lit/ds/symlink/ucc28083.pdf) (28 pp, sha256 `19bab60962d5c6f5`, retrieved 2026-10-08, tier: manufacturer)
- **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/ucc28083dr-datasheet.pdf)