component
REF3450QDGKRQ1
Public Made by Adomby adom
Texas Instruments Voltage Reference, VSSOP-8. 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
markdownREF3450QDGKRQ1
Texas Instruments · Voltage Reference · VSSOP-8
REF3450QDGKRQ1 from Texas Instruments, in a VSSOP-8. 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 | ENABLE | input | Enable input: a logic high of 1.6 V or higher runs the device and a logic low of 0.5 V or lower puts it in low-power shutdown, and EN must not be pulled above VIN. |
| 2 | GND_S | power_in | Ground sense connection for Kelvin sensing of the ground reference, which carries negligible current because the sense lines are high impedance. |
| 3 | GND_F | power_in | Ground force connection that carries the ground return current; tie it to GND_S when Kelvin connections are not needed. |
| 4 | NIC | unconnected | No internal connection; the pin is not connected inside the device. |
| 5 | NIC | unconnected | No internal connection; the pin is not connected inside the device. |
| 6 | OUT_F | output | Reference voltage output force connection, rated for the device output current of ±10 mA. |
| 7 | OUT_S | output | Reference voltage output sense connection used for Kelvin sensing of the output voltage at the load, which carries negligible current. |
| 8 | IN | power_in | Input supply voltage connection; it must be at least VOUT + VDO and is recommended up to 12 V, with an absolute maximum of 13 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VSSOP-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
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 | IN | -0.3 | 13 | V | 5 | ||
| Enable voltage | EN | -0.3 | V | 5 | |||
| Output voltage | VOUT | -0.3 | 5.5 | V | 5 | ||
| Output short-circuit current | 20 | mA | 5 | ||||
| Operating temperature range | TA | -55 | 150 | °C | 5 | ||
| Storage temperature range | Tstg | -65 | 170 | °C | 5 | ||
| Input voltage (minimum is VOUT + VDO) | IN | 12 | V | 5 | |||
| Enable voltage (maximum is IN) | EN | 0 | V | 5 | |||
| Output current | IL | -10 | 10 | mA | 5 | ||
| Operating temperature | TA | -40 | 25 | 125 | °C | 5 | |
| 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 to 12V | 6 | |
| Load regulation, sourcing | ΔVO/ΔIL | 20 | 30 | ppm/mA | IL = 0mA to 10mA, VIN = VOUT + VDO | 6 | |
| Load regulation, sinking (REF3450-Q1) | ΔVO/ΔIL | 70 | 140 | ppm/mA | IL = 0mA to -10mA, VIN = VOUT + VDO | 6 | |
| Stable output capacitor range | CL | 0.1 | 10 | µF | 6 | ||
| Supply input voltage (minimum is VOUT + VDO) | 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 | Operating mode | 7 | |
| Quiescent current, shutdown mode | IQ | 2.5 | 3 | µA | Shutdown mode | 7 | |
| Dropout voltage | VDO | 50 | 100 | mV | IL = 0mA | 7 | |
| Enable pin voltage, reference on | VEN | 1.6 | V | Reference in operating mode (EN = 1) | 7 | ||
| Enable pin voltage, reference off | VEN | 0.5 | V | Reference in shutdown mode (EN = 0) | 7 | ||
| Enable pin leakage current | IEN | 1 | 2 | µA | VEN = VIN = 12V | 7 | |
| Short-circuit current | ISC | 18 | 22 | mA | TA = 25°C, VOUT = 0V | 7 | |
| Junction-to-ambient thermal resistance (DGK 8-pin) | RθJA | 174.1 | °C/W | 5 | |||
| Junction-to-case (top) thermal resistance (DGK 8-pin) | RθJC(top) | 61.3 | °C/W | 5 | |||
| Junction-to-board thermal resistance (DGK 8-pin) | RθJB | 95.5 | °C/W | 5 | |||
| Junction-to-top characterization parameter (DGK 8-pin) | ΨJT | 8.5 | °C/W | 5 | |||
| Junction-to-board characterization parameter (DGK 8-pin) | ΨJB | 93.9 | °C/W | 5 |
CAD (KiCad official)
- Symbol:
REF3450QDGKRQ1 - Footprint:
Package_SO:VSSOP-8_2.3x2mm_P0.5mm - 3D model: VSSOP-8 (KiCad packages3D, STEP)
- 3D model files:
ref3450qdgkrq1-etched.step/ref3450qdgkrq1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ref3450qdgkrq1.step/ref3450qdgkrq1.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 2026-10-12, 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, 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).