# UCC28065DR

**Texas Instruments** · AC-DC Controllers And Regulators · SOIC-16

UCC28065DR from Texas Instruments, in a SOIC-16. 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 | ZCD_B | input | Phase B zero current detection input for transition-mode switching, maximum ±5mA input current |
| 2 | VSENSE | input | Error amplifier input for output voltage feedback, voltage range -0.5 to 7V |
| 3 | TSET | input | Timing set input for switching frequency configuration, voltage range -0.5 to 7V |
| 4 | PHB | input | Phase B enable/disable threshold input for phase management, voltage range -0.5 to 7V |
| 5 | COMP | output | Error amplifier output for voltage loop compensation with nominal transconductance 55µS, voltage range -0.5 to 7V |
| 6 | AGND | power_in | Analog ground reference for signal circuits |
| 7 | VINAC | input | Input AC voltage sense for line feed-forward control, voltage range -0.5 to 7V |
| 8 | HVSEN | input | High voltage output sense for over-voltage protection, voltage range -0.5 to 7V |
| 9 | BRST | input | Burst mode threshold input for light-load efficiency control, voltage range -0.5 to 7V |
| 10 | CS | input | Current sense input with peak input current capacity -30mA during system inrush, voltage range -0.5 to 3V |
| 11 | GDB | output | Phase B gate driver output with ±25mA output current, voltage range -0.5 to VCC + 0.3V |
| 12 | VCC | power_in | Bias supply input internally clamped with continuous input current limit 20mA, voltage range -0.5 to 21V |
| 13 | PGND | power_in | Power ground reference for gate drivers and output stage |
| 14 | GDA | output | Phase A gate driver output with ±25mA output current, voltage range -0.5 to VCC + 0.3V |
| 15 | VREF | power_in | Voltage reference output with maximum output current -2mA |
| 16 | ZCD_A | input | Phase A zero current detection input for transition-mode switching, maximum ±5mA input current |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-16 |
| Category | Power Management (PMIC) |
| Pins | 16 |

## CAD (KiCad official)

- Symbol: `UCC28065DR`
- Footprint: `Package_SO:SOIC-16_3.9x9.9mm_P1.27mm`
- 3D model: SOIC-16 (KiCad packages3D, STEP)
- 3D model files: `ucc28065dr-etched.step` / `ucc28065dr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ucc28065dr.step` / `ucc28065dr.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/ucc28065.pdf) (55 pp, sha256 `3091d0b70e4d96bd`, retrieved 2026-10-03, tier: manufacturer)
- **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/ucc28065dr-datasheet.pdf)