# REF3212AIDBVT

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

REF3212AIDBVT 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 (force ground); GND_S and GND_F must stay within 200 mV of each other or the internal ESD diodes may conduct. |
| 2 | GND_S | power_in | Load-side ground sense connection; the maximum differential voltage between GND_S and GND_F must be kept below 200 mV to prevent the ESD protection diodes from turning on. |
| 3 | ENABLE | input | Digital input that enables and disables the device; pulling it low places the reference in low-power shutdown. |
| 4 | IN | power_in | Positive supply input; VIN must be VOUT + 0.05 V to 5.5 V (REF3212 minimum supply is 1.8 V). |
| 5 | OUT_S | input | Load-side output sense connection, used with OUT_F for force-sense load regulation. |
| 6 | OUT_F | output | Voltage reference output; the output current is specified at -10 mA to +10 mA. |

## Key specifications

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

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Output voltage (REF3212, 1.25 V) | VOUT | 1.2475 | 1.25 | 1.2525 | V | TA = +25°C, ILOAD = 0mA, VIN = 5V (table default) | 4 |
| Initial accuracy |  | -0.2 | 0.01 | 0.2 | % | TA = +25°C, ILOAD = 0mA, VIN = 5V (table default) | 4 |
| Output voltage temperature drift | dVOUT/dT |  | 4 | 7 | ppm/°C | 0°C ≤ TA ≤ +125°C | 5 |
| Output voltage temperature drift | dVOUT/dT |  | 10.5 | 20 | ppm/°C | -40°C ≤ TA ≤ +125°C | 5 |
| Line regulation |  | -65 | 15 | 65 | ppm/V | VOUT + 0.05 V ≤ VIN ≤ 5.5V | 5 |
| Load regulation, sourcing | dVOUT/dILOAD | -40 | 3 | 40 | µV/mA | 0mA < ILOAD < 10mA, VIN = VOUT + 250mV | 5 |
| Load regulation, sinking | dVOUT/dILOAD | -60 | 20 | 60 | µV/mA | -10mA < ILOAD < 0mA, VIN = VOUT + 100mV | 5 |
| Dropout voltage | VIN – VOUT |  | 5 | 50 | mV | 0°C ≤ TA ≤ +125°C | 5 |
| Output current | ILOAD | -10 |  | 10 | mA | VIN = VOUT + 250mV | 5 |
| Input voltage (REF3212 minimum supply) | VIN | 1.8 |  | 5.5 | V | Min per footnote (1) for REF3212 (row prints VOUT + 0.05 V); max 5.5 V | 6 |
| Enable reference low (shutdown) | VL | 0 |  | 0.7 | V | Reference in shutdown mode | 5 |
| Enable reference high (active) | VH | 1.5 |  |  | V | Reference active; printed max is VIN | 5 |
| Quiescent current | IQ |  | 110 | 130 | µA | ENABLE > 1.5V, IL = 0 | 6 |
| Quiescent current over temperature | IQ |  | 125 | 145 | µA | 0°C ≤ TA ≤ +125°C | 6 |
| Shutdown current | IS |  | 0.1 | 1 | µA | ENABLE < 0.7V | 6 |
| Input voltage | VIN |  |  | 7.5 | V |  | 4 |
| Operating temperature (absolute maximum) |  | -55 |  | 135 | °C | Operating, ambient | 4 |
| Storage temperature |  | -65 |  | 150 | °C | Storage | 4 |
| Junction temperature |  |  |  | 150 | °C |  | 4 |
| Rated temperature range |  | -40 |  | 125 | °C | Rated | 6 |
| GND_S to GND_F differential voltage |  |  |  | 200 | mV | Must stay below 200mV to prevent ESD diode conduction | 14 |
| Thermal resistance, junction-to-ambient (SOT-23-6) | θJA |  | 200 |  | °C/W |  | 6 |

## CAD (KiCad official)

- Symbol: `REF3212AIDBVT`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `ref3212aidbvt-etched.step` / `ref3212aidbvt-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ref3212aidbvt.step` / `ref3212aidbvt.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/ref3220) (28 pp, sha256 `4085cf61cd12affb`, retrieved 2026-10-10, 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-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/ref3212aidbvt-datasheet.pdf)