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BL6281GMM

Public Made by Adom

by adom

BL Shanghai Belling Audio Amplifiers, MSOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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BL6281GMM

BL Shanghai Belling · Audio Amplifiers · MSOP-8

BL6281GMM from BL Shanghai Belling, in a MSOP-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 SHD input Shut-down logic control where '0' is active; the shutdown input high threshold is 1.3 V and the input low threshold is 0.8 V at VDD = 5 V.
2 BP passive Analog ground for the inner OPAs held at about half of VDD, which needs a 1 µF bypass capacitor (Cb) for half-supply filtering.
3 INP input Positive (non-inverting) amplifier input; input voltage must stay between -0.3 V and VDD + 0.3 V per the absolute maximum ratings.
4 INN input Negative (inverting) amplifier input whose series resistor Ri, together with feedback resistor Rf, sets the closed-loop gain AVD = 2*(Rf/Ri).
5 Vout1 output Negative BTL speaker output, which together with Vout2 drives the load.
6 VDD power_in Power supply input, operating range 2.2 V to 5.5 V, with an absolute maximum of 6 V.
7 GND power_in Ground reference for the device.
8 Vout2 output Positive BTL speaker output, which together with Vout1 drives the load.

Key specifications

Parameter Value
Manufacturer BL Shanghai Belling
Package MSOP-8
Category Amplifiers/Comparators
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
Recommended supply voltage VDD VDD 2.2 5.5 V 4
Operating temperature range TA -40 85 ℃ 4
Supply voltage absolute maximum VDD -0.3 6 V 4
Input voltage absolute maximum VIN -0.3 V Upper limit printed as VDD+0.3V 4
Junction temperature TJ -40 150 ℃ 4
Storage temperature TSTG -65 150 ℃ 4
Quiescent power supply current (8Ω load) IDD 3.5 8 mA VDD = 5V, VIN = 0V, 8Ω Load 4
Quiescent power supply current (no load) IDD 3 7 mA VDD = 5V, VIN = 0V, No Load 4
Shutdown current ISD 0.1 2 uA VDD = 5V, VIN=0V, VSHD=GND, No Load 4
Output offset voltage VOS -50 6 50 mV VDD = 5V 4
Power supply rejection ratio at 217 Hz PSRR 50 60 dB VDD = 5V, 8Ω Load, input terminated with 10Ω, VDDRIPPLE=0.2VP-P, f=217Hz 5
Power supply rejection ratio at 1 KHz PSRR 51 61 dB VDD = 5V, 8Ω Load, input terminated with 10Ω, VDDRIPPLE=0.2VP-P, f=1KHz 5
Output power PO 0.9 1.1 W VDD = 5V, THD+N<=1%, f=1KHz, 8Ω Load 4
Quiescent power supply current (8Ω load) IDD 2.3 7 mA VDD = 3V, VIN = 0V, 8Ω Load 5
Quiescent power supply current (no load) IDD 1.9 6 mA VDD = 3V, VIN = 0V, No Load 5
Shutdown current ISD 0.1 2 uA VDD = 3V, VIN=0V, VSHD=GND, No Load 5
Output offset voltage VOS -50 6 50 mV VDD = 3V 5
Power supply rejection ratio at 217 Hz PSRR 53 65 dB VDD = 3V, 8Ω Load, input terminated with 10Ω, VDDRIPPLE=0.2VP-P, f=217Hz 5
Power supply rejection ratio at 1 KHz PSRR 54 66 dB VDD = 3V, 8Ω Load, input terminated with 10Ω, VDDRIPPLE=0.2VP-P, f=1KHz 5
Output offset voltage VOS -50 4 50 mV VDD = 2.6V 5
Power supply rejection ratio at 217 Hz PSRR 52 64 dB VDD = 2.6V, 8Ω Load, input terminated with 10Ω, VDDRIPPLE=0.2VP-P, f=217Hz 5
Power supply rejection ratio at 1 KHz PSRR 53 65 dB VDD = 2.6V, 8Ω Load, input terminated with 10Ω, VDDRIPPLE=0.2VP-P, f=1KHz 5
Shutdown voltage input high VSDIH 1.3 V VDD = 5V 4
Shutdown voltage input low VSDIL 0.8 V VDD = 5V 4
Total harmonic distortion+noise THD+N 0.05 % VDD = 5V, Po=0.5Wrms, f=1KHz 4
Wake-up time TWU 100 ms VDD = 5V 5
Shutdown voltage input high VSDIH 1 V VDD = 3V 5
Shutdown voltage input low VSDIL 0.6 V VDD = 3V 5
Total harmonic distortion+noise THD+N 0.06 % VDD = 3V, Po=0.25Wrms, f=1KHz 5
Output power PO 310 mW VDD = 3V, THD+N<=1%, f=1KHz, 8Ω Load 5
Wake-up time TWU 90 ms VDD = 3V 5
Quiescent power supply current (8Ω load) IDD 1.8 mA VDD = 2.6V, VIN = 0V, 8Ω Load 5
Quiescent power supply current (no load) IDD 1.5 mA VDD = 2.6V, VIN = 0V, No Load 5
Shutdown current ISD 0.1 uA VDD = 2.6V, VIN=0V, VSHD=GND, No Load 5
Shutdown voltage input low VSDIL 0.5 V VDD = 2.6V 5
Output power PO 230 mW VDD = 2.6V, THD+N<=1%, f=1KHz, 8Ω Load 5
Wake-up time TWU 80 ms VDD = 2.6V 5
Thermal resistance junction-to-case (MSOP8) θJC 56 ℃/W MSOP8 4
Thermal resistance junction-to-ambient (MSOP8) θJA 190 ℃/W MSOP8 4

CAD (KiCad official)

  • Symbol: BL6281GMM
  • Footprint: Package_SO:MSOP-8_3x3mm_P0.65mm
  • 3D model: MSOP-8 (KiCad packages3D, STEP)
  • 3D model files: bl6281gmm-etched.step / bl6281gmm-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bl6281gmm.step / bl6281gmm.glb are the bare package body.

Provenance

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

  • Datasheet: BL Shanghai Belling datasheet (8 pp, sha256 a3cbb07ba7d63f5a, retrieved 2026-10-18, tier: lcsc)
  • 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