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REF3440QDGKRQ1

Public Made by Adom

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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.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 (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