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LM4670SD

Public Made by Adom

by adom

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

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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
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LM4670SD

Texas Instruments · Audio Amplifiers · SON-8-EP(3x3)

LM4670SD from Texas Instruments, in a SON-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 SHUTDOWN input Active-low shutdown input; logic low (GND) enables shutdown, VSDIL 0.4V max and VSDIH 1.4V min, with an internal 300kΩ resistor to GND so a floating pin shuts the device down.
2 -IN input Inverting audio input; gain is set by AV = 2*150kΩ/Ri with the external input resistor Ri.
3 +IN input Non-inverting audio input; gain is set by AV = 2*150kΩ/Ri with the external input resistor Ri.
4 GND power_in Ground pin, the reference for all voltages.
5 VO1 output Switching BTL output 1 that drives the speaker load directly without an output filter.
6 GND power_in Ground pin, the reference for all voltages.
7 VDD power_in Supply voltage input, 2.4V to 5.5V operating range, bypassed with a 1µF capacitor placed close to the pin.
8 VO2 output Switching BTL output 2 that drives the speaker load directly without an output filter.
9 EP passive Exposed thermal pad that must be soldered to the PCB for thermal and mechanical performance; the datasheet does not state its net connection.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SON-8-EP(3x3)
Category Amplifiers/Comparators
Pins 9

CAD (KiCad official)

  • Symbol: LM4670SD
  • Footprint: Package_SON:WSON-8-1EP_3x3mm_P0.5mm_EP1.6x2.0mm
  • 3D model: SON-8-EP(3x3) (KiCad packages3D, STEP)
  • 3D model files: lm4670sd-etched.step / lm4670sd-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm4670sd.step / lm4670sd.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (26 pp, sha256 0068144b7e44b3d9, retrieved 2026-10-03, 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