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LM3676SD-3.3

Public Made by Adom

by adom

Texas Instruments DC-DC Converters, WSON-8-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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LM3676SD-3.3

Texas Instruments · DC-DC Converters · WSON-8-EP(3x3)

LM3676SD-3.3 from Texas Instruments, in a WSON-8-EP(3x3). 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 PGND power_in Power ground pin.
2 SW output Switching node connection to the internal PFET switch and NFET synchronous rectifier.
3 MODE input Mode control pin: >1.0V selects continuous PWM mode; <0.4V selects Auto (PFM-PWM) mode.
4 FB input Feedback analog input; connect directly to the output filter capacitor for fixed voltage versions.
5 EN input Enable pin; device is in shutdown mode when voltage is <0.4V and enabled when >1.0V.
6 NC unconnected Not connected; leave pin floating and do not connect to other pins.
7 SGND power_in Signal ground pin.
8 VIN power_in Power supply input; connect to the input filter capacitor.
9 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package WSON-8-EP(3x3)
Category Power Management (PMIC)
Pins 9

CAD (KiCad official)

  • Symbol: LM3676SD-3.3
  • Footprint: Package_SON:WSON-8-1EP_3x3mm_P0.5mm_EP1.6x2.0mm
  • 3D model: WSON-8-EP(3x3) (KiCad packages3D, STEP)
  • 3D model files: lm3676sd-3-3-etched.step / lm3676sd-3-3-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm3676sd-3-3.step / lm3676sd-3-3.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (27 pp, sha256 32b5d5fe31ca1bd6, 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