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REF3440QDGKRQ1
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Texas Instruments Voltage References, VSSOP-8-0.65mm. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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REF3440QDGKRQ1
Texas Instruments · Voltage References · VSSOP-8-0.65mm
REF3440QDGKRQ1 from Texas Instruments, in a VSSOP-8-0.65mm. 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 that turns the device on or puts it in low-power shutdown; the datasheet gives the operating mode at EN of 1.6 V or higher and shutdown at 0.5 V or lower, and EN must not be pulled above VIN. |
| 2 | GND_S | power_in | Ground sense connection of the Kelvin (force/sense) pair, carrying negligible current, and it may be tied to GND_F where IR drop is negligible. |
| 3 | GND_F | power_in | Ground force connection that carries the load return current, and it may be tied to GND_S where IR drop is negligible. |
| 4 | NIC | unconnected | No internal connection; the datasheet assigns no function to this pin. |
| 5 | NIC | unconnected | No internal connection; the datasheet assigns no function to this pin. |
| 6 | OUT_F | output | Reference voltage output force connection that sources or sinks load current limited to ±10 mA, with a short-circuit current of 18 mA typical (22 mA max) at 25°C. |
| 7 | OUT_S | output | Reference voltage output sense connection used with OUT_F to remove IR-drop error from the reference output at the load. |
| 8 | IN | power_in | Input supply connection; VIN must be at least VOUT + VDO (dropout) and the recommended maximum is 12 V (absolute maximum 13 V). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VSSOP-8-0.65mm |
| Category | Power Supply Chip |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
REF3440QDGKRQ1 - Footprint:
Package_SO:VSSOP-8_2.3x2mm_P0.5mm - 3D model: VSSOP-8-0.65mm (KiCad packages3D, STEP)
- 3D model files:
ref3440qdgkrq1-etched.step/ref3440qdgkrq1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ref3440qdgkrq1.step/ref3440qdgkrq1.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 2026-10-08, 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).
# REF3440QDGKRQ1
**Texas Instruments** · Voltage References · VSSOP-8-0.65mm
REF3440QDGKRQ1 from Texas Instruments, in a VSSOP-8-0.65mm. 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 that turns the device on or puts it in low-power shutdown; the datasheet gives the operating mode at EN of 1.6 V or higher and shutdown at 0.5 V or lower, and EN must not be pulled above VIN. |
| 2 | GND_S | power_in | Ground sense connection of the Kelvin (force/sense) pair, carrying negligible current, and it may be tied to GND_F where IR drop is negligible. |
| 3 | GND_F | power_in | Ground force connection that carries the load return current, and it may be tied to GND_S where IR drop is negligible. |
| 4 | NIC | unconnected | No internal connection; the datasheet assigns no function to this pin. |
| 5 | NIC | unconnected | No internal connection; the datasheet assigns no function to this pin. |
| 6 | OUT_F | output | Reference voltage output force connection that sources or sinks load current limited to ±10 mA, with a short-circuit current of 18 mA typical (22 mA max) at 25°C. |
| 7 | OUT_S | output | Reference voltage output sense connection used with OUT_F to remove IR-drop error from the reference output at the load. |
| 8 | IN | power_in | Input supply connection; VIN must be at least VOUT + VDO (dropout) and the recommended maximum is 12 V (absolute maximum 13 V). |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VSSOP-8-0.65mm |
| Category | Power Supply Chip |
| Pins | 8 |
## CAD (KiCad official)
- Symbol: `REF3440QDGKRQ1`
- Footprint: `Package_SO:VSSOP-8_2.3x2mm_P0.5mm`
- 3D model: VSSOP-8-0.65mm (KiCad packages3D, STEP)
- 3D model files: `ref3440qdgkrq1-etched.step` / `ref3440qdgkrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ref3440qdgkrq1.step` / `ref3440qdgkrq1.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/ref34-q1) (40 pp, sha256 `addb0b3508cd0c2e`, retrieved 2026-10-08, 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/ref3440qdgkrq1-datasheet.pdf)