# UCC28722DBVR

**Texas Instruments** · AC-DC Controllers And Regulators · SOT-23-6

UCC28722DBVR from Texas Instruments, in a SOT-23-6. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | CBC | input | Cable compensation programming pin. A resistor from CBC to GND (recommended max 10 kΩ) programs compensation for the voltage drop in the output cable. |
| 2 | VDD | power_in | Bias supply input to the controller. Operating range 9 V to 35 V (38 V absolute max); requires a 1-10 µF bypass capacitor to GND placed close to the pin. |
| 3 | DRV | output | Drive output to the base of an external high-voltage NPN BJT power switch. Continuous base current sink capability up to 50 mA; source current is self-limiting. |
| 4 | CS | input | Current-sense input connected to a ground-referenced current-sense resistor in series with the power switch, used to monitor and control peak primary current. A series resistor may be added to compensate peak switch current versus AC-mains input variation. Absolute max −0.5 V to 5 V. |
| 5 | GND | power_in | Ground reference for the controller and low-side return for the DRV output. Return all AC decoupling capacitors as close as possible to this pin and avoid common trace length with analog signal returns. |
| 6 | VS | input | Voltage-sense input for voltage and timing feedback, connected to a resistor divider from an auxiliary flyback winding to GND. The upper divider resistor value programs the AC-mains run/stop thresholds and line compensation at the CS pin. Absolute max −0.75 V to 7 V; peak current −1.2 mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-6 |
| Category | Power Management (PMIC) |
| Pins | 6 |

## Ordering variants

Same part, different packaging or reel option.

- `UCC28722DBVR`
- `UCC28722DBVRDBVT`

## CAD (KiCad official)

- Symbol: `UCC28722DBVR`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `ucc28722dbvr-etched.step` / `ucc28722dbvr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ucc28722dbvr.step` / `ucc28722dbvr.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/ucc28722.pdf) (None pp, sha256 `5e87818af755c571`, retrieved 2026-08-17, tier: manufacturer)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/ucc28722dbvr-datasheet.pdf)