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LM4871BM

Public Made by Adom

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HGSEMI Audio Amplifiers, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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LM4871BM

HGSEMI · Audio Amplifiers · SOP-8

LM4871BM from HGSEMI, in a SOP-8. 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-high shutdown control that disconnects the amplifier bias when driven high; it must be tied to VDD to shut down or to GND to enable the amplifier and must not be left floating.
2 BYPASS output Internal bias voltage node that requires a bypass capacitor CB, typically 0.1 µF, with the value chosen for low-frequency THD+N, system cost and size.
3 +IN input Non-inverting analog audio input of the amplifier.
4 -IN input Inverting analog audio input which, together with feedback resistor Rf and input resistor Ri, sets the closed-loop gain with AVD = 2(Rf/Ri) in bridge mode.
5 VO1 output Negative analog output of the bridge-tied load driver.
6 VDD power_in Power supply pin with a recommended operating range of 2.0 V to 5.0 V and an absolute maximum operating voltage of 6.0 V.
7 GND power_in Ground reference pin for the device.
8 VO2 output Positive analog output of the bridge-tied load driver; in single-ended use it is connected as a pseudo-load with a resistor and capacitor for stability.

Key specifications

Parameter Value
Manufacturer HGSEMI
Package SOP-8
Category Amplifiers/Comparators
Pins 8

CAD (KiCad official)

  • Symbol: LM4871BM
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)
  • 3D model files: lm4871bm-etched.step / lm4871bm-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm4871bm.step / lm4871bm.glb are the bare package body.

Provenance

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

  • Datasheet: HGSEMI datasheet (13 pp, sha256 479d1184e9fd9d02, retrieved 2026-10-12, 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: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (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