# REF3025AIDBZR

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

REF3025AIDBZR from Texas Instruments, in a SOT-23. 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 | Input supply voltage. Recommended VIN range: VOUT + 0.2V to 5.5V (absolute max 7V to GND). Optional 0.1µF input bypass capacitor. |
| 2 | OUT | output | Reference output voltage (2.5V nominal for REF3025). Load current specified up to 25mA; short-circuit current typ 35mA; stable without an output capacitor (0.1µF to 22µF supported). |
| 3 | GND | power_in | Ground reference for the input supply and output voltage. Common return for all device currents. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23 |
| Category | Power Management (PMIC) |
| Pins | 3 |

## Ordering variants

Same part, different packaging or reel option.

- `REF3025AIDBZR`

## Electrical characteristics

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

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Initial accuracy (REF30 family, device comparison table) |  | -0.2 |  | 0.2 | % |  | 2 |
| Output voltage temperature drift | dVOUT/dT |  | 20 | 50 | ppm/°C | 0°C ≤ TA ≤ 70°C | 9 |
| Output voltage temperature drift | dVOUT/dT |  | 28 | 60 | ppm/°C | –30°C ≤ TA ≤ +85°C | 9 |
| Output voltage temperature drift | dVOUT/dT |  | 30 | 65 | ppm/°C | –40°C ≤ TA ≤ +85°C | 9 |
| Output voltage temperature drift | dVOUT/dT |  | 35 | 75 | ppm/°C | –40°C ≤ TA ≤ +125°C | 9 |
| Load regulation | dVOUT/dILOAD |  | 3 | 100 | ppm | 0mA < ILOAD < 25mA, VIN = VREF + 500mV | 9 |
| Thermal hysteresis |  |  | 25 | 100 | ppm |  | 9 |
| Dropout voltage | VDO |  | 1 | 50 | mV |  | 9 |
| Quiescent current | IQ |  | 42 | 50 | µA | TA = 25C | 9 |
| Quiescent current | IQ |  |  | 59 | µA | –40°C ≤ TA ≤ +125°C | 9 |
| Input voltage (REF30xx) | VIN |  |  | 5.5 | V | Specification for REF30xx; printed minimum is VOUT + 0.05 (formula, not numeric) | 4 |
| Load current (REF30xx) | ILOAD |  |  | 25 | mA | Specification for REF30xx | 4 |
| Operating temperature | TA | -40 |  | 125 | °C |  | 4 |
| Supply voltage, IN to GND |  |  |  | 7 | V | REF30xx | 4 |
| Output short-circuit current |  |  |  | 70 | mA | Short circuit to ground | 4 |
| Operating temperature |  | -40 |  | 125 | °C |  | 4 |
| Junction temperature | TJ |  |  | 150 | °C |  | 4 |
| Storage temperature range | Tstg | -65 |  | 150 | °C |  | 4 |
| Long term stability |  |  | 24 |  | ppm | 0000h to 1000h | 9 |
| Long term stability |  |  | 15 |  | ppm | 1000h to 2000h | 9 |
| Short-circuit current | ISC |  | 45 |  | mA |  | 9 |
| Turnon settling time |  |  | 120 |  | µs | To 0.1% with CL = 1μF | 9 |
| Junction-to-ambient thermal resistance | RθJA |  | 297.3 |  | °C/W | REF30XX, DBZ (SOT-23), 3 pins | 5 |
| Junction-to-case (top) thermal resistance | RθJC(top) |  | 128.5 |  | °C/W | REF30XX, DBZ (SOT-23), 3 pins | 5 |
| Junction-to-board thermal resistance | RθJB |  | 91.7 |  | °C/W | REF30XX, DBZ (SOT-23), 3 pins | 5 |
| Junction-to-top characterization parameter | ΨJT |  | 12.8 |  | °C/W | REF30XX, DBZ (SOT-23), 3 pins | 5 |
| Junction-to-board characterization parameter | ΨJB |  | 90.3 |  | °C/W | REF30XX, DBZ (SOT-23), 3 pins | 5 |

## CAD (KiCad official)

- Symbol: `REF3025AIDBZR`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `ref3025aidbzr-etched.step` / `ref3025aidbzr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ref3025aidbzr.step` / `ref3025aidbzr.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/lit/ds/symlink/ref30.pdf) (37 pp, sha256 `59daf1014acc7ddf`, retrieved 2026-08-17, tier: lcsc)
- **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/ref3025aidbzr-datasheet.pdf)