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Contents

README

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LM2611BMFX

Texas Instruments · DC-DC Converters · SOT-23-5

LM2611BMFX from Texas Instruments, in a SOT-23-5. 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 SW output Drain of internal switch, -0.4 V to 36 V; connect at node of input inductor and Cuk capacitor.
2 GND power_in Analog and power ground.
3 NFB input Negative feedback input, -6 V to 0.4 V; set output voltage via external resistor divider.
4 SHDN input Shutdown control input, -0.4 V to 14.5 V; high enables device, low disables.
5 VIN power_in Analog and power input, 2.7 V to 14 V supply range; filter high frequency noise with 0.1-µF capacitor.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOT-23-5
Category Power Management (PMIC)
Pins 5

CAD (KiCad official)

  • Symbol: LM2611BMFX
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: lm2611bmfx-etched.step / lm2611bmfx-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm2611bmfx.step / lm2611bmfx.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (29 pp, sha256 870a9fb2a10458ec, retrieved 2026-10-07, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-4-5-20251001 (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