# REF4132B33DBVRQ1

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

REF4132B33DBVRQ1 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 | N/C | unconnected | No connect pin, leave floating. |
| 2 | GND | power_in | Ground reference pin. |
| 3 | EN | input | Enable pin that enables or disables the device, with VEN specified from 0 V to VIN. |
| 4 | VIN | power_in | Input supply, specified from VREF + VDO (minimum) to 5.5 V (maximum). |
| 5 | VREF | power_out | Reference voltage output, with output current specified at -10 mA to 10 mA. |

## 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 |
|---|---|---|---|---|---|---|---|
| Output voltage accuracy |  | -0.05 |  | 0.05 | % | TA = 25°C | 5 |
| Output voltage temperature coefficient (B grade) |  |  |  | 30 | ppm/℃ | -40°C ≤ TA ≤ 125°C, REF4132 B grade | 5 |
| Line regulation | ΔVREF/ΔVIN |  |  | 2 | ppm/V | VREF + VDO ≤ VIN ≤ 5.5 V | 5 |
| Line regulation | ΔVREF/ΔVIN |  |  | 15 | ppm/V | VREF + VDO ≤ VIN ≤ 5.5 V | 5 |
| Line regulation (VREF = 5 V) | ΔVREF/ΔVIN |  |  | 55 | ppm/V | VREF = 5 V, VREF + VDO ≤ VIN ≤ 5.5 V | 5 |
| Load regulation | ΔVREF/ΔIL |  |  | 20 | ppm/mA | IL = 0 mA to 10mA, VIN = VREF + VDO | 5 |
| Load regulation | ΔVREF/ΔIL |  |  | 120 | ppm/mA | IL = 0 mA to 10mA, VIN = VREF + VDO | 5 |
| Input voltage | VIN |  |  | 5.5 | V | VREF + VDO to 5.5 V | 5 |
| Quiescent current, active mode | IQ |  | 80 | 100 | µA | Active mode | 5 |
| Quiescent current, shutdown mode | IQ |  | 2.5 | 5 | µA | Shutdown mode, VEN = 0 V | 5 |
| Enable pin voltage, active | VEN | 1.6 |  |  | V | Voltage reference in active mode (EN=1) | 5 |
| Enable pin voltage, shutdown | VEN |  |  | 0.5 | V | Voltage reference in shutdown mode (EN=0) | 5 |
| Enable pin current | IEN |  | 1 | 2 | µA | VEN = 5.5 V | 5 |
| Dropout voltage | VDO |  |  | 100 | mV | IL = 0 mA | 5 |
| Dropout voltage | VDO |  |  | 500 | mV | IL = 10 mA | 5 |
| Short circuit current | ISC | 11.5 | 18 |  | mA | VREF = 0 V | 5 |
| Turn-on time | tON |  |  | 2.5 | ms | 0.1% settling, CL = 1 µF, 10% to 90% | 5 |
| Low frequency noise | en(p-p) |  |  | 15 | ppm p-p | ƒ = 0.1 Hz to 10 Hz | 5 |
| Wide band noise | en |  |  | 24 | µVrms | ƒ = 10 Hz to 10 kHz | 5 |
| Long-term stability |  |  |  | 30 | ppm | 0 to 1000h at 35℃ | 5 |
| Output voltage hysteresis | VHYST |  |  | 35 | ppm | TA = 25℃ to −40℃ to 125℃ to 25℃ | 5 |
| Stable output capacitor range | CL | 0.1 |  | 10 | µF |  | 5 |
| Input voltage (absolute maximum) | VIN | -0.3 |  | 6 | V |  | 4 |
| Enable voltage (absolute maximum) | VEN | -0.3 |  |  | V | VIN + 0.3 V upper limit as printed | 4 |
| Output voltage (absolute maximum) | VREF | -0.3 |  | 5.5 | V |  | 4 |
| Output short circuit current (absolute maximum) | ISC |  |  | 20 | mA |  | 4 |
| Operating temperature range (absolute maximum) | TA | -55 |  | 150 | °C | Free-air | 4 |
| Storage temperature range (absolute maximum) | Tstg | -65 |  | 170 | °C |  | 4 |
| Output voltage recommended operating range | IL | -10 |  | 10 | mA | Output current | 4 |
| Enable voltage (recommended operating) | VEN | 0 |  |  | V | Upper limit VIN | 4 |
| Operating temperature (recommended) | TA | -40 | 25 | 125 | ℃ | Operating free-air temperature range | 4 |
| Junction-to-ambient thermal resistance | RθJA |  | 185 |  | °C/W | DBV 5-pin package | 4 |

## CAD (KiCad official)

- Symbol: `REF4132B33DBVRQ1`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `ref4132b33dbvrq1-etched.step` / `ref4132b33dbvrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ref4132b33dbvrq1.step` / `ref4132b33dbvrq1.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/ref4132-q1) (26 pp, sha256 `501c7fd203a594ac`, 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/ref4132b33dbvrq1-datasheet.pdf)