component

LM2674M-12

Public Unreviewed

by Ray

UMW DC-DC Converters, SOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Datasheet

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Contents

README

markdown

LM2674M-12

UMW · DC-DC Converters · SOP-8

LM2674M-12 from UMW, in a SOP-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 CB passive Boost capacitance terminal. Connect a bootstrap capacitor (typ. 10 nF / 103 50 V) between CB and VSW to drive the high-side switch gate above VIN.
2 NC unconnected No connect. Empty port; leave floating or tie to a nearby non-signal net per PCB preference.
3 NC unconnected No connect. Empty port; leave floating or tie to a nearby non-signal net per PCB preference.
4 FB input Feedback control terminal. Senses the regulated output for the internal error amplifier; for the fixed -12 variant tie directly to VOUT. Absolute range: -0.3 V to VIN.
5 ON/OFF input Enable terminal with TTL/hysteresis: High = ON, Low = OFF. VON_OFFH >= 1.5 V (on), VON_OFFL <= 0.8 V (off). Absolute max -0.3 V to 6 V.
6 GND power_in Power supply ground / return for the internal control and switch circuits.
7 VIN power_in Positive terminal of power supply. Operating range 7 V to 40 V (absolute max 45 V). Bypass with a 100 uF (or larger) low-ESR input capacitor close to the pin.
8 VSW power_out Power switch output (SW node). Connects to the external catch diode and inductor of the buck power stage. Absolute range -1 V to VIN.

Key specifications

Parameter Value
Manufacturer UMW
Package SOP-8
Category PMIC
Pins 8

Ordering variants

Same part, different packaging or reel option.

  • LM2674M-12

The extractor listed these alongside LM2674M-12, but they are different parts with different electrical characteristics. Do not order them as substitutes.

  • LM2674M-12M-3.3
  • LM2674M-12M-5.0
  • LM2674M-12M-ADJ

CAD (KiCad official)

  • Symbol: LM2674M-12
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: UMW datasheet (14 pp, sha256 8da892f0ae83409e, 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