# TPS73733QDRBRQ1

**Texas Instruments** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · VSON-8-EP(3x3)

TPS73733QDRBRQ1 from Texas Instruments, in a VSON-8-EP(3x3). 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 | OUT | power_out | Regulator output; requires a capacitor of 1µF or larger of any type for stability, and the device is not limited by output capacitor type. |
| 2 | NC | unconnected | No internal connection. |
| 3 | NR | passive | Noise-reduction pin on the fixed-voltage version; an external capacitor CNR connected to ground bypasses the internal bandgap noise and reduces output noise to very low levels. |
| 4 | GND | power_in | Ground reference for the regulator. |
| 5 | EN | input | Enable input: driving high (above 1.7 V minimum) turns the regulator on and driving low (below 0.5 V maximum) puts it in shutdown; it must not be left floating and should be tied to IN if unused. |
| 6 | NC | unconnected | No internal connection. |
| 7 | NC | unconnected | No internal connection. |
| 8 | IN | power_in | Unregulated input supply, specified from 2.2 V to 5.5 V (absolute maximum −0.3 V to 6 V). |
| 9 | GND | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VSON-8-EP(3x3) |
| Category | Power Management (PMIC) |
| Pins | 9 |

## CAD (KiCad official)

- Symbol: `TPS73733QDRBRQ1`
- Footprint: `Package_SON:VSON-8-1EP_3x3mm_P0.65mm_EP1.6x2.4mm`
- 3D model: VSON-8-EP(3x3), generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.9 mm nominal VQFN height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files: `tps73733qdrbrq1-etched.step` / `tps73733qdrbrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tps73733qdrbrq1.step` / `tps73733qdrbrq1.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/cn/lit/gpn/tps737-q1) (33 pp, sha256 `522c347f436e9a4a`, retrieved 2026-10-10, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **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/tps73733qdrbrq1-datasheet.pdf)