component

LM385MX

Public Made by Adom

by adom

Texas Instruments Voltage Reference, SOIC-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

componentpower management (pmic)lm385mx
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Generated by kicad-footprint-generator · KiCad file format 20260206
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docs lm385mx: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
viewers lm385mx: viewers · Ray 1mo ago
lm385mx-etched.fit.json lm385mx: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
lm385mx-etched.glb lm385mx: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
lm385mx-etched.step lm385mx: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
lm385mx.glb Publish 0.1.0 · Ray 1mo ago
lm385mx.kicad_mod Publish 0.1.0 · Ray 1mo ago
lm385mx.kicad_sym Publish 0.1.0 · Ray 1mo ago
lm385mx.lbr Publish 0.1.0 · Ray 1mo ago
lm385mx.step Publish 0.1.0 · Ray 1mo ago
package.json Publish 0.1.0 · Ray 1mo ago
page.json lm385mx: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray 1mo ago
README.md lm385mx: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray 1mo ago

LM385MX

Texas Instruments · Voltage Reference · SOIC-8

LM385MX 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 FEEDBACK input Feedback/adjust input to the internal band-gap amplifier. Connect to the tap of an external resistive divider from V+ to V- to program the reference voltage from 1.24 V up to 5.30 V. Feedback current is typically ~13 nA (LM185) / 16 nA (LM385).
2 NC unconnected No internal connection. Leave floating or tie to any convenient net; not electrically connected to the die.
3 NC unconnected No internal connection. Leave floating or tie to any convenient net; not electrically connected to the die.
4 V- power_in Negative supply / anode of the shunt reference. Return current path; typically connected to circuit ground in shunt-regulator configurations. Absolute maximum reverse current 30 mA.
5 NC unconnected No internal connection. Leave floating or tie to any convenient net; not electrically connected to the die.
6 NC unconnected No internal connection. Leave floating or tie to any convenient net; not electrically connected to the die.
7 NC unconnected No internal connection. Leave floating or tie to any convenient net; not electrically connected to the die.
8 V+ power_in Positive supply / cathode of the shunt reference. Fed through an external series resistor from the raw supply to set the reference bias current (10 µA to 20 mA operating range). Operates over a 1.24 V to 5.3 V output range set by FEEDBACK.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOIC-8
Category Power Management (PMIC)
Pins 8

Ordering variants

Same part, different packaging or reel option.

  • LM385M/NOPB
  • LM385MX/NOPB
  • LM385BM/NOPB
  • LM385BMX/NOPB
  • LM385Z
  • LM385BZ
  • LM385MXLM285Z
  • LM385MXLM285BZ
  • LM385MXLM185H
  • LM385MXLM185BXH
  • LM385MXLM185BYH
  • LM385MXLM185E/883

CAD (KiCad official)

  • Symbol: LM385MX
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: lm385mx-etched.step / lm385mx-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm385mx.step / lm385mx.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (None pp, sha256 53da1c19ad1627c4, retrieved 2026-08-17, tier: lcsc)
  • 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