component

LM4861BM

Public Made by Adom

by adom

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

componentoperational amplifier-comparatorlm4861bmfactory-2.0.0extractor-text

Verified LM4861BM

by Ray · last 5 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

5 Nov 2026RayPublished by the parts factory: tier lcsc, 8 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: LM4861BM · SOP-8 · 8 pins
  • ✓copper: 8 copper pads, none touching another net
  • ✓datasheet: all 8 pin names found in the 13-page datasheet
  • •distributor (warn): no ['digikey', 'mouser'] number
  • ✓family: SOIC-8_3.9x4.9mm_P1.27mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-ru8o5xr7/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 8 pins = 8 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 8 pins agree
  • ✓symbol_text: no pin names collide
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ lm4861bm.kicad_sym✓ lm4861bm.kicad_mod✓ lm4861bm.step
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Contents

README

markdown

LM4861BM

HGSEMI · Audio Power OpAmps · SOP-8

LM4861BM 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: tie to VDD to shut the amplifier down or to ground to enable it, and do not leave it floating.
2 BYPASS output Internal bias voltage node that requires a bypass capacitor CB (typical 0.1µF) to filter it.
3 +IN input Non-inverting analog input of the amplifier.
4 -IN input Inverting analog input; with Rf it sets the closed-loop differential gain AVD = 2(Rf/Ri).
5 VO1 output Negative analog output of the bridge amplifier, driving one side of the load.
6 VDD power_in Power supply, specified from 2.0V to 5.0V with a 6.0V absolute maximum operating voltage.
7 GND power_in Ground reference for the device.
8 VO2 output Positive analog output of the bridge amplifier, driven in antiphase with VO1 across the load.

Key specifications

Parameter Value
Manufacturer HGSEMI
Package SOP-8
Category Operational Amplifier/Comparator
Pins 8

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Operating temperature (recommended) TA -40 85 ℃ 3
Operating voltage (recommended) VDD 2 5 V 3
Supply voltage VDD 2 5 V 3
Static current IDD 6.5 10 mA VIN=0V, IO=0A 3
Shutdown mode current ISD 0.6 2 µA VPIN1=VDD 3
Output offset voltage VOS 5 50 mV VIN=0V 3
Operating voltage (absolute maximum) 6 V Tamb=25°C unless otherwise specified 2
Input voltage -0.3 V Upper limit printed as VDD+0.3 V; Tamb=25°C unless otherwise specified 2
Operating temperature (absolute maximum) -40 85 ℃ Tamb=25°C unless otherwise specified 2
Junction temperature 150 ℃ Tamb=25°C unless otherwise specified 2
Soldering temperature 260 ℃ 10 s 2

CAD (KiCad official)

  • Symbol: LM4861BM
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)
  • 3D model files: lm4861bm-etched.step / lm4861bm-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm4861bm.step / lm4861bm.glb are the bare package body.

Provenance

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

  • Datasheet: HGSEMI datasheet (13 pp, sha256 f4e96d03ac1c379e, retrieved 2026-11-05, 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