# TPS74501PQWDRBRQ1

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

TPS74501PQWDRBRQ1 from Texas Instruments, in a SON-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 | Regulated output voltage pin that requires a capacitor to ground for stability, with COUT between 1 µF and 220 µF and a minimum derated capacitance of 0.47 µF. |
| 2 | NC | unconnected | No internal connection; ground this pin for better thermal performance. |
| 3 | FB | input | Feedback input to the control loop error amplifier that sets the output voltage of the adjustable version, from 0.55 V to 5.5 V. |
| 4 | GND | power_in | Ground pin, electrically connected to the thermal pad and the GND plane. |
| 5 | EN | input | Enable input that turns the regulator on when driven above VEN(HI) and shuts it down when driven below VEN(LO), with a VEN range of 0 V to 6.0 V. |
| 6 | PG | output | Power-good output available in open-drain (pullup required) or push-pull topology, with VPG rated 0 V to 6.0 V and IPG limited to ±10 mA. |
| 7 | NC | unconnected | No internal connection; ground this pin for better thermal performance. |
| 8 | IN | power_in | Input pin with an input voltage range of 1.5 V to 6.0 V, requiring the recommended ceramic capacitor (minimum 1 µF) from IN to ground placed close to the device. |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `TPS74501PQWDRBRQ1`
- Footprint: `Package_SON:WSON-8-1EP_3x3mm_P0.5mm_EP1.6x2.0mm`
- 3D model: SON-8-EP(3x3) (KiCad packages3D, STEP)
- 3D model files: `tps74501pqwdrbrq1-etched.step` / `tps74501pqwdrbrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tps74501pqwdrbrq1.step` / `tps74501pqwdrbrq1.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/tps745-q1) (48 pp, sha256 `434ed7c32560a28e`, retrieved 2026-11-05, tier: manufacturer)
- **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/tps74501pqwdrbrq1-datasheet.pdf)