component
REF3433SQDBVRQ1
Public Made by Adomby adom
Texas Instruments Voltage Reference, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownREF3433SQDBVRQ1
Texas Instruments · Voltage Reference · SOT-23-5
REF3433SQDBVRQ1 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 | NC | unconnected | Test pin, connected from 0 V to 18 V per the datasheet pin function table, and not a true no-connect. |
| 2 | GND | power_in | Ground connection for the device. |
| 3 | IN | power_in | Input supply voltage connection; the recommended input is VOUT + VDO up to 12 V, with an absolute maximum of 13 V. |
| 4 | OUT | output | Reference voltage output connection; the output current range is ±10 mA and the short-circuit current is limited to 18 mA. |
| 5 | NIC | unconnected | No internal connection. |
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 | 6 | ||
| Output voltage temperature coefficient | 2.5 | 6 | ppm/℃ | 6 | |||
| Line regulation | ΔVO/ΔVIN | 2 | 15 | ppm/V | VIN = VOUT + VDO (2) to 12V | 6 | |
| Load regulation sourcing | ΔVO/ΔIL | 20 | 30 | ppm/mA | IL = 0mA to 10mA, VIN = VOUT + VDO (3) | 6 | |
| Load regulation sinking REF3433-Q1 | ΔVO/ΔIL | 48 | 84 | ppm/mA | IL = 0mA to -10mA, VIN = VOUT + VDO (3) | 6 | |
| Low-frequency noise | enp-p | 5 | µV p-p | 0.1Hz ≤ f ≤ 10Hz | 6 | ||
| Integrated broadband noise | en | 24 | µVrms | 10Hz ≤ f ≤ 10kHz | 6 | ||
| Output voltage noise density | en | 0.25 | ppm/√Hz | f = 1kHz | 6 | ||
| Long-term stability DBV package 0h to 1000h | 25 | ppm | 35℃ for 0h to 1000h | 6 | |||
| Long-term stability DBV package 1000h to 2000h | 10 | ppm | 35℃ for 1000h to 2000h | 6 | |||
| Output voltage thermal hysteresis DBV cycle 1 | 30 | ppm | 25°C、-40°C、125°C、25°C 周期 1 | 6 | |||
| Output voltage thermal hysteresis DBV cycle 2 | 10 | ppm | 25°C、-40°C、125°C、25°C 周期 2 | 6 | |||
| Stable output capacitance range | CL | 0.1 | 10 | µF | 6 | ||
| Output voltage | VOUT | 3.3 | V | REF3433Q1 | 7 | ||
| Input voltage | VIN | 12 | V | 7 | |||
| Output current capability | IL | -10 | 10 | mA | VIN = VOUT + VDO to 12V | 7 | |
| Quiescent current operating mode | IQ | 72 | 95 | µA | 工作模式 | 7 | |
| Dropout voltage | VDO | 50 | 100 | mV | IL = 0mA | 7 | |
| Dropout voltage at 10mA | VDO | 500 | mV | IL = 10mA | 7 | ||
| Short-circuit current | ISC | 18 | 22 | mA | TA = 25°C, VOUT = 0V | 7 | |
| Input voltage absolute maximum | IN | -0.3 | 13 | V | 5 | ||
| Output voltage absolute maximum | VOUT | -0.3 | 5.5 | V | 5 | ||
| Output short-circuit current | 20 | mA | 5 | ||||
| Operating temperature range absolute maximum | TA | -55 | 150 | °C | 5 | ||
| Storage temperature range | Tstg | -65 | 170 | °C | 5 | ||
| Input voltage recommended | IN | 12 | V | VOUT + VDO to 12V | 5 | ||
| Output current recommended | IL | -10 | 10 | mA | 5 | ||
| Operating temperature recommended | TA | -40 | 25 | 125 | °C | 5 | |
| Junction-to-ambient thermal resistance DBV 5-pin | RθJA | 122.6 | °C/W | 5 | |||
| Junction-to-case (top) thermal resistance DBV 5-pin | RθJC(top) | 80.2 | °C/W | 5 | |||
| Junction-to-board thermal resistance DBV 5-pin | RθJB | 42 | °C/W | 5 | |||
| Junction-to-top characterization parameter DBV 5-pin | ΨJT | 23.2 | °C/W | 5 | |||
| Junction-to-board characterization parameter DBV 5-pin | ΨJB | 41.9 | °C/W | 5 |
CAD (KiCad official)
- Symbol:
REF3433SQDBVRQ1 - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
ref3433sqdbvrq1-etched.step/ref3433sqdbvrq1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ref3433sqdbvrq1.step/ref3433sqdbvrq1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (40 pp, sha256
addb0b3508cd0c2e, retrieved 2026-11-06, tier: manufacturer) - 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, primaryclaude-haiku-5-5(text), consensusclaude-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).