# UZ1085L-33-TN3-R

**UTC Unisonic Tech** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252-2(DPAK)

UZ1085L-33-TN3-R from UTC Unisonic Tech, in a TO-252-2(DPAK). 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 | GND | power_in | Ground / common return for the fixed-voltage regulator. Internal reference and error amplifier are referenced to this pin. Tab of the TO-252 is electrically connected to this pin (GND) for the fixed-output version. |
| 2 | VOUT | power_out | Regulated 3.3V output (typ 3.3V, min 3.234V, max 3.366V) capable of sourcing up to 3A. Requires a 22µF output capacitor for stability. Minimum load current 10mA typical. |
| 3 | VIN | power_in | Unregulated input supply. Operating range for the 3.3V fixed variant is 4.8V ≤ VIN ≤ 10.3V; absolute maximum 18V. Dropout voltage is typically 1.3V at IOUT=3A. A 22µF input capacitor is recommended. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | UTC Unisonic Tech |
| Package | TO-252-2(DPAK) |
| Category | PMIC |
| Pins | 3 |

## Ordering variants

Same part, different packaging or reel option.

- `UZ1085L-33-TN3-R`
- `UZ1085L-33-TN3-RTA3-T`
- `UZ1085L-33-TN3-RTF3-T`
- `UZ1085L-33-TN3-RTQ2-T`
- `UZ1085L-33-TN3-RTQ2-R`
- `UZ1085L-33-TN3-RTQ3-T`
- `UZ1085L-33-TN3-RTQ3-R`

## CAD (KiCad official)

- Symbol: `UZ1085L-33-TN3-R`
- Footprint: `Package_TO_SOT_SMD:TO-252-2`
- 3D model: TO-252-2(DPAK) (KiCad packages3D, STEP)
- 3D model files: `uz1085l-33-tn3-r-etched.step` / `uz1085l-33-tn3-r-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `uz1085l-33-tn3-r.step` / `uz1085l-33-tn3-r.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [UTC Unisonic Tech datasheet](docs/uz1085l-33-tn3-r-datasheet.pdf) (7 pp, sha256 `a0899cf558b465e2`, 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/uz1085l-33-tn3-r-datasheet.pdf)