# REF3433QDBVRQ1

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

REF3433QDBVRQ1 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 | Ground force connection; connect directly to application ground to form Kelvin sensing pair for minimizing IR drops on ground traces. |
| 2 | GND_S | power_in | Ground sense connection; provides feedback of actual ground potential to internal regulator for Kelvin sensing compensation of PCB trace losses. |
| 3 | EN | input | Enable input; apply ≥1.6V for normal operation or ≤0.5V for shutdown mode consuming 3µA maximum. |
| 4 | IN | power_in | Input power supply voltage; supply between VOUT+VDO (50mV minimum dropout at 0mA load) and 12V maximum. |
| 5 | OUT_S | output | Reference output sense connection; part of Kelvin output sensing pair providing feedback to internal regulator for load regulation. |
| 6 | OUT_F | output | Reference output force connection; provides 3.3V nominal output with ±10mA current capability and 72µA to 95µA quiescent current. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `REF3433QDBVRQ1`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `ref3433qdbvrq1-etched.step` / `ref3433qdbvrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ref3433qdbvrq1.step` / `ref3433qdbvrq1.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/ref34-q1) (40 pp, sha256 `addb0b3508cd0c2e`, retrieved 2026-10-01, 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/ref3433qdbvrq1-datasheet.pdf)