# REF2030QDDCRQ1

**Texas Instruments** · Voltage Reference · SOT-23-5

REF2030QDDCRQ1 from Texas Instruments, in a SOT-23-5. 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 | VBIAS | output | Bias voltage output (VREF/2) that tracks VREF to 7 ppm/°C maximum over -40°C to 125°C, with ±20 mA load current and 50 mA short-circuit current limit. |
| 2 | GND | power_in | Ground pin, the device reference for the supply and outputs. |
| 3 | EN | input | Enable input: the device operates when EN ≥ VIN - 0.7 V, and when pulled low (0 to 0.7 V) it enters low-power shutdown with outputs high-impedance and quiescent current reduced to 5 µA; absolute maximum range is -0.3 V to VIN + 0.3 V. |
| 4 | VIN | power_in | Input supply voltage with a recommended range of VREF + 0.02 V to 5.5 V and an absolute maximum of 6 V. |
| 5 | VREF | power_in | Reference voltage output (VREF), 3.0 V for the REF2030 variant, with ±0.05% maximum initial accuracy, 8 ppm/°C maximum drift over -40°C to 125°C, and ±20 mA load current. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |

## Electrical characteristics

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

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input voltage VIN | VIN | -0.3 |  | 6 | V |  | 5 |
| Operating temperature |  | -55 |  | 150 | °C |  | 5 |
| Junction temperature | Tj |  |  | 150 | °C |  | 5 |
| Storage temperature | Tstg | -65 |  | 170 | °C |  | 5 |
| ESD human body model (HBM) | V(ESD) | -2500 |  | 2500 | V | HBM, AEC Q100-002 | 5 |
| ESD charged device model (CDM) | V(ESD) | -1500 |  | 1500 | V | CDM, AEC Q100-011 | 5 |
| Supply input voltage range | VIN |  |  | 5.5 | V | IL = 0mA, TA = 25°C | 5 |
| Output voltage accuracy |  | -0.05 |  | 0.05 | % |  | 6 |
| Load regulation, sourcing | ΔVO(ΔIL) |  | 8 | 20 | ppm/mA | 0mA ≤ IL ≤ 20mA, VREF + 0.6V ≤ VIN ≤ 5.5V | 6 |
| Load regulation, sinking | ΔVO(ΔIL) |  | 8 | 20 | ppm/mA | 0mA ≤ IL ≤ -20mA, VREF + 0.02V ≤ VIN ≤ 5.5V | 6 |
| Line regulation | ΔVO(ΔVI) |  | 3 | 35 | ppm/V | VREF + 0.02V ≤ VIN ≤ 5.5V | 6 |
| Output voltage temperature coefficient |  | -8 | 3 | 8 | ppm/°C | -40°C ≤ TA ≤ 125°C | 6 |
| VREF and VBIAS tracking over temperature |  | -7 | 2 | 7 | ppm/°C | -40°C ≤ TA ≤ 125°C | 6 |
| Supply current, operating mode | ICC |  | 360 | 430 | µA |  | 6 |
| Supply current, operating mode, over temperature | ICC |  |  | 460 | µA | -40°C ≤ TA ≤ 125°C | 6 |
| Supply current, shutdown mode | ICC |  | 3.3 | 5 | µA | 关断模式 | 6 |
| Supply current, shutdown mode, over temperature | ICC |  |  | 9 | µA | -40°C ≤ TA ≤ 125°C | 6 |
| Enable voltage, device in shutdown mode |  | 0 |  | 0.7 | V | 器件处于关断模式 (EN = 0) | 6 |
| Dropout voltage |  |  | 10 | 20 | mV |  | 6 |
| Dropout voltage at load current |  |  |  | 600 | mV | IL = 20mA | 6 |
| Stable output capacitor range | CL | 0 |  | 10 | µF |  | 6 |
| Long-term stability |  |  |  | 25 | ppm | 0 到 1000 小时 | 6 |
| Output voltage hysteresis, period 1 |  |  |  | 60 | ppm | 25°C、-40°C、125°C、25°C 周期 1 | 6 |
| Output voltage hysteresis, period 2 |  |  |  | 35 | ppm | 周期 2 | 6 |
| Thermal resistance, junction-to-ambient | RθJA |  | 193.6 |  | °C/W |  | 5 |
| Thermal resistance, junction-to-case (top) | RθJC(top) |  | 40.2 |  | °C/W |  | 5 |
| Thermal resistance, junction-to-board | RθJB |  | 34.5 |  | °C/W |  | 5 |
| Thermal characterization parameter, junction-to-top | ψJT |  | 0.9 |  | °C/W |  | 5 |
| Thermal characterization parameter, junction-to-board | ψJB |  | 34.3 |  | °C/W |  | 5 |
| Short-circuit current | ISC |  | 50 |  | mA |  | 6 |
| Turn-on time to 0.1% settling | ton |  | 500 |  | µs | 0.1% 稳定，CL = 1µF | 6 |
| Low-frequency noise |  |  | 12 |  | ppmPP | 0.1Hz ≤ f ≤ 10Hz | 6 |
| Output voltage noise density |  |  | 0.25 |  | ppm/√Hz | f = 100Hz | 6 |

## CAD (KiCad official)

- Symbol: `REF2030QDDCRQ1`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `ref2030qddcrq1-etched.step` / `ref2030qddcrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ref2030qddcrq1.step` / `ref2030qddcrq1.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/ref20-q1) (36 pp, sha256 `b9e4625bf04c8076`, retrieved 2026-10-21, 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/ref2030qddcrq1-datasheet.pdf)