# REF3325AIDCKT

**Texas Instruments** · Voltage Reference · SC-70-3

REF3325AIDCKT from Texas Instruments, in a SC-70-3. 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 | IN | power_in | Input supply voltage; VIN must be at least VOUT + 0.2 V and no more than 5.5 V under recommended operating conditions. |
| 2 | OUT | power_out | Output voltage of the reference, rated for an output current range of -5 mA to 5 mA. |
| 3 | GND | power_in | Ground reference pin. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SC-70-3 |
| Category | Power Management (PMIC) |
| Pins | 3 |

## 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 |  | -0.15 |  | 0.15 | % |  | 6 |
| Output voltage | VOUT |  | 2.5 |  | V |  | 6 |
| Output voltage noise |  |  | 70 |  | μVPP | f = 0.1Hz to 10Hz | 6 |
| Output voltage temperature drift | dVOUT/dT |  | 9 | 30 | ppm/°C | -40°C to 85°C | 6 |
| Output voltage temperature drift | dVOUT/dT |  | 8 | 30 | ppm/°C | -40°C to 125°C | 6 |
| Line regulation | ΔVO(ΔVI) | -50 | 6 | 50 | ppm/V | VIN = VOUT + 200mV to 5.5V | 6 |
| Line regulation | ΔVO(ΔVI) |  | 6 |  | ppm/V | 0°C to +70°C | 6 |
| Line regulation | ΔVO(ΔVI) |  | 8 |  | ppm/V | -40°C to 85°C | 6 |
| Line regulation | ΔVO(ΔVI) |  | 30 |  | ppm/V | -40°C to 125°C | 6 |
| Load regulation | ΔVO(ΔIL) | -50 | 6 | 50 | ppm/mA | VIN = VOUT + 200mV | 6 |
| Load regulation | ΔVO(ΔIL) |  | 10 |  | ppm/mA | ILOAD = ±5mA, 0°C to 70°C | 6 |
| Load regulation | ΔVO(ΔIL) |  | 20 |  | ppm/mA | ILOAD = ±5mA, -40°C to 85°C | 6 |
| Long-term stability |  |  | 55 |  | ppm | 0h to 1000h at 25°C | 6 |
| Thermal hysteresis | dT |  | 90 |  | ppm |  | 6 |
| Minimum dropout voltage | VIN, VOUT |  | 110 | 160 | mV | ILOAD = ±5mA | 6 |
| Minimum dropout voltage | VIN, VOUT |  | 120 |  | mV | 0°C to 70°C | 6 |
| Minimum dropout voltage | VIN, VOUT |  | 135 |  | mV | -40°C to 85°C | 6 |
| Minimum dropout voltage | VIN, VOUT |  | 180 |  | mV | -40°C to 125°C | 6 |
| Minimum dropout voltage | VIN, VOUT |  | 70 |  | mV | ILOAD = ±2mA, -40°C to 85°C | 6 |
| Short-circuit current | ISC |  | 35 |  | mA | Sourcing and sinking | 6 |
| Capacitive load | CL | 0.1 |  | 10 | μF |  | 7 |
| Turn-on settling time |  |  | 2 |  | ms | To 0.1% with CL = 1μF | 7 |
| Specified voltage range | VS |  |  | 5.5 | V |  | 7 |
| Operating voltage range |  |  |  | 5.5 | V | ILOAD = 0mA | 7 |
| Quiescent current | IQ |  | 3.9 | 5 | µA |  | 7 |
| Quiescent current | IQ |  | 4.4 | 6.5 | µA | -40°C to 85°C | 7 |
| Quiescent current | IQ |  | 4.8 | 8.5 | µA | -40°C to 125°C | 7 |
| Specified temperature range | TA | -40 |  | 125 | °C |  | 7 |
| Operating temperature range | TA | -50 |  | 150 | °C |  | 7 |
| Input voltage |  |  |  | 7.5 | V |  | 5 |
| Output voltage |  |  |  | 5 | V |  | 5 |
| Output short-circuit current | ISC |  |  | 180 | mA |  | 5 |
| Operating temperature |  | -50 |  | 150 | °C |  | 5 |
| Junction temperature | TJ |  |  | 150 | °C |  | 5 |
| Storage temperature | Tstg | -65 |  | 150 | °C |  | 5 |
| Supply input voltage | VIN |  |  | 5.5 | V |  | 5 |
| Output current range | IOUT | -5 |  | 5 | mA |  | 5 |
| Junction-to-ambient thermal resistance | RθJA |  | 279.7 |  | °C/W | DCK (SC70) package | 5 |
| Junction-to-case (top) thermal resistance | RθJC(top) |  | 136.3 |  | °C/W | DCK (SC70) package | 5 |
| Junction-to-board thermal resistance | RθJB |  | 56.9 |  | °C/W | DCK (SC70) package | 5 |
| Junction-to-top characterization parameter | ψJT |  | 11 |  | °C/W | DCK (SC70) package | 5 |
| Junction-to-board characterization parameter | ψJB |  | 56.1 |  | °C/W | DCK (SC70) package | 5 |

## CAD (KiCad official)

- Symbol: `REF3325AIDCKT`
- Footprint: `Package_TO_SOT_SMD:SOT-323_SC-70`
- 3D model: SC-70-3 (KiCad packages3D, STEP)
- 3D model files: `ref3325aidckt-etched.step` / `ref3325aidckt-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ref3325aidckt.step` / `ref3325aidckt.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/ref33.pdf) (36 pp, sha256 `39839abc9bf09417`, retrieved 2026-11-05, tier: manufacturer)
- **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/ref3325aidckt-datasheet.pdf)