# REF3225AIDBVT

**Texas Instruments** · Voltage Reference · SOT-23-6

REF3225AIDBVT from Texas Instruments, in a SOT-23-6. 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 | GND_F | power_in | Device ground connection; GND_F and GND_S differential voltage must not exceed 200mV to prevent ESD protection diode conduction. |
| 2 | GND_S | input | Load end ground remote sensing input; connects to load ground junction with maximum 200mV differential vs GND_F for Kelvin sensing. |
| 3 | ENABLE | input | Digital enable/disable input; output disabled when voltage is below 0.7V, enabled when voltage exceeds 1.5V. |
| 4 | IN | power_in | Positive power supply input; operating range from VOUT + 50mV (minimum 2.55V for REF3225) to 5.5V. |
| 5 | OUT_S | input | Remote output sensing input; connects to load output junction for Kelvin feedback regulation to compensate for trace resistance. |
| 6 | OUT_F | output | Reference voltage output; nominal 2.5V (2.495V to 2.505V typical range) with ±10mA sourcing/sinking capability when VIN ≥ VOUT + 250mV. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `REF3225AIDBVT`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `ref3225aidbvt-etched.step` / `ref3225aidbvt-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ref3225aidbvt.step` / `ref3225aidbvt.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/ref3225) (28 pp, sha256 `4085cf61cd12affb`, retrieved 2026-10-05, 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/ref3225aidbvt-datasheet.pdf)