# TPS74633PQWDRBRQ1

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

TPS74633PQWDRBRQ1 from Texas Instruments, in a WSON-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 | output | Regulated output voltage pin; requires 1-220µF capacitor to ground for stability. |
| 2 | NC | unconnected | No internal connection; ground for improved thermal performance. |
| 3 | NC | unconnected | No internal connection; ground for improved thermal performance. |
| 4 | GND | power_in | Ground reference, electrically connected to thermal pad. |
| 5 | EN | input | Enable input; drive high (>VEN(HI)) to enable regulator or low (<VEN(LO)) for shutdown mode. |
| 6 | PG | tri_state | Power-good open-drain output with 150µs delay; indicates output voltage within regulation range. |
| 7 | NC | unconnected | No internal connection; ground for improved thermal performance. |
| 8 | IN | power_in | Supply input pin (1.5V to 6.0V); requires 1µF ceramic capacitor to ground for optimal transient response. |
| 9 | Thermal Pad | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `TPS74633PQWDRBRQ1`
- Footprint: `Package_SON:WSON-8-1EP_3x3mm_P0.5mm_EP1.6x2.0mm`
- 3D model: WSON-8-EP(3x3) (KiCad packages3D, STEP)
- 3D model files: `tps74633pqwdrbrq1-etched.step` / `tps74633pqwdrbrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tps74633pqwdrbrq1.step` / `tps74633pqwdrbrq1.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/tps746-q1) (48 pp, sha256 `184c3108e6b0527b`, retrieved 2026-10-03, 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-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/tps74633pqwdrbrq1-datasheet.pdf)