component
LM4670SD
Public Made by Adomby adom
Texas Instruments Audio Amplifiers, SON-8-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownLM4670SD
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm4670sd.step/lm4670sd.glbare 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, primaryclaude-haiku-4-5-20251001(text), consensusclaude-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).