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LM334MX

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by Ray

Texas Instruments Current Source / Constant Current Source, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Symbol & Footprint

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Datasheet

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Contents

README

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LM334MX

Texas Instruments · Current Source / Constant Current Source · SOIC-8

LM334MX from Texas Instruments, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 R passive Current-set (R) terminal. Connect the set resistor RSET between this pin and V- to program ISET (ISET ≈ 67.7 mV / RSET at 25 °C). R-pin to V- voltage is limited to 5 V max.
2 V+ power_in Positive supply / current source input. Tied internally to pins 3 and 4 in the SOIC-8 D package; multiple pins are provided for improved thermal/current handling. Absolute maximum V+ to V- is 40 V (forward), 20 V (reverse).
3 V+ power_in Positive supply / current source input, common with pins 2 and 4. Multiple V+ leads share current in the SOIC-8 package.
4 V+ power_in Positive supply / current source input, common with pins 2 and 3.
5 NC unconnected No internal connection. Leave floating or tie to a nearby rail for layout convenience.
6 V- power_in Negative supply / current source output (return). Tied internally with pin 7 in the SOIC-8 D package.
7 V- power_in Negative supply / current source output, common with pin 6.
8 NC unconnected No internal connection.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOIC-8
Category PMIC
Pins 8

Ordering variants

Same part, different packaging or reel option.

  • LM334MX
  • LM334M/NOPB
  • LM334MX/NOPB
  • LM334SM
  • LM334SM/NOPB
  • LM334SMX
  • LM334SMX/NOPB
  • LM334MXLM134H
  • LM334MXLM234H
  • LM334H
  • LM334Z
  • LM334LP

CAD (KiCad official)

  • Symbol: LM334MX
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (27 pp, sha256 c1e168475b490f87, retrieved 2026-08-17, tier: manufacturer)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF