# TPS79301DBVRG4Q1

**Texas Instruments** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-6

TPS79301DBVRG4Q1 from Texas Instruments, in a SOT-23-6. 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 | IN | power_in | Regulator input voltage. Operating range 2.7V to 5.5V (absolute maximum -0.3V to 6V old chip / 6.5V new chip). A 0.1µF to 1µF input capacitor is recommended. |
| 2 | GND | power_in | Regulator ground reference. |
| 3 | EN | input | Enable input. Drive logic high (0 to 5.5V range) to enable the regulator; drive logic low to place the device in shutdown mode. Used for power sequencing. |
| 4 | BYPASS/NC | passive | Old chip (BYPASS): external bypass capacitor to this pin works with an internal resistor to form a low-pass filter that further reduces regulator noise. New chip (NC): no connection, not internally connected - may be tied to GND to improve thermal performance or left floating. |
| 5 | FB | input | Feedback input voltage for the adjustable regulator (TPS79301-Q1). Connect to the tap of an external resistor divider from OUT to GND to set the output voltage (VFB ≈ 1.2246V nominal, output range VFB to 5V). |
| 6 | OUT | power_out | Regulated output. Sources up to 200mA continuous. Requires an output capacitor of 2.2µF (old chip) or 1µF (new chip) ceramic minimum for stability, up to 10µF (old) / 200µF (new). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-6 |
| Category | Power Management (PMIC) |
| Pins | 6 |

## Ordering variants

Same part, different packaging or reel option.

- `TPS79301DBVRG4Q1`
- `TPS79301DBVRG4Q1DBVT`

## CAD (KiCad official)

- Symbol: `TPS79301DBVRG4Q1`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `tps79301dbvrg4q1-etched.step` / `tps79301dbvrg4q1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tps79301dbvrg4q1.step` / `tps79301dbvrg4q1.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/tps793-q1) (None pp, sha256 `7ea2cf405d5dd786`, retrieved 2026-08-17, 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:** `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/tps79301dbvrg4q1-datasheet.pdf)