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Contents

README

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LMR62421XMF

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

LMR62421XMF from Texas Instruments, in a SOT-23-5. 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 SW output Switch node connected to inductor and output diode.
2 GND power_in Signal and power ground pin; place feedback network bottom resistor as close as possible to this pin.
3 FB input Feedback pin connected to external resistor divider to set output voltage.
4 EN input Shutdown control input; logic high enables operation, must not float or exceed VIN + 0.3V.
5 VIN power_in Supply voltage for power stage and input supply voltage with operating range 2.7V to 5.5V.

Key specifications

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

CAD (KiCad official)

  • Symbol: LMR62421XMF
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: lmr62421xmf-etched.step / lmr62421xmf-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lmr62421xmf.step / lmr62421xmf.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (30 pp, sha256 7e3326c2cd12601a, retrieved 2026-09-23, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.2, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-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