component

LM4809

Public Unreviewed

by Ray

IDCHIP Audio Amplifiers, MSOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.

componentamplifiers-comparatorslm4809
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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

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LM4809

IDCHIP · Audio Amplifiers · MSOP-8

LM4809 from IDCHIP, in a MSOP-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 VO1 output Channel 1 audio power amplifier output. Drives a speaker load (typ. 16 Ω or 32 Ω) directly through an output coupling capacitor.
2 IN1 input Channel 1 audio input. Inverting input to the internal amplifier; gain is set by an external feedback resistor network.
3 BYP passive Internal common-mode bias bypass. Connect an external bypass capacitor (typ. 4.7 µF) to ground to filter the internal reference and improve PSRR.
4 GND power_in Power ground return for the device.
5 SD input Shutdown control. SD=0 places the chip in low-power shutdown (typ. 0.4 µA); SD=1 (VIH ≥ 0.8·VDD) enables normal operation. VIL ≤ 0.2·VDD.
6 IN2 input Channel 2 audio input. Inverting input to the second internal amplifier; gain is set by an external feedback resistor network.
7 VO2 output Channel 2 audio power amplifier output. Drives a speaker load (typ. 16 Ω or 32 Ω) directly through an output coupling capacitor.
8 VDD power_in Positive supply input. Recommended operating range 2.0 V to 5.5 V; absolute max 6 V. Bypass locally with a 1 µF capacitor to GND.

Key specifications

Parameter Value
Manufacturer IDCHIP
Package MSOP-8
Category Amplifiers/Comparators
Pins 8

Ordering variants

Same part, different packaging or reel option.

  • LM4809M
  • LM4809S

CAD (KiCad official)

  • Symbol: LM4809
  • Footprint: Package_SO:MSOP-8_3x3mm_P0.65mm
  • 3D model: MSOP-8 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: IDCHIP datasheet (13 pp, sha256 443a22aa8d4e8d09, retrieved 2026-08-17, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • 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