# TP73318PDQNR

**TECH PUBLIC** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · DFN-4-EP(1x1)

TP73318PDQNR from TECH PUBLIC, in a DFN-4-EP(1x1). 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 | VOUT | power_out | Regulated output voltage pin (fixed 0.8V to 3.45V options, up to 300mA output current). |
| 2 | GND | power_in | Ground. |
| 3 | EN | input | Enable input, active high, must not be left floating. |
| 4 | VIN | power_in | Input supply voltage, 1.4V to 5.5V operating range (absolute maximum -0.3V to 6.5V). |
| 5 | GND | power_in | Exposed thermal pad, labelled GND in the pin diagram. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TECH PUBLIC |
| Package | DFN-4-EP(1x1) |
| Category | Power Management (PMIC) |
| Pins | 5 |

## CAD (KiCad official)

- Symbol: `TP73318PDQNR`
- Footprint: `Package_DFN_QFN:UDFN-4-1EP_1x1mm_P0.65mm_EP0.48x0.48mm`
- 3D model: DFN-4-EP(1x1) (KiCad packages3D, STEP)
- 3D model files: `tp73318pdqnr-etched.step` / `tp73318pdqnr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tp73318pdqnr.step` / `tp73318pdqnr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TECH PUBLIC datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588946014623842304) (10 pp, sha256 `d3c6df8c8d3b4679`, retrieved 2026-10-09, 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/tp73318pdqnr-datasheet.pdf)