Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Package | MSOP-8 |
| Supply voltage | 3V~5.25V |
| Output Power | 3Wx1@4Ω |
| Speaker Channels | 1-Channel |
| Operating Temperature | -40℃~+85℃ |
| Quiescent Current | 4mA |
| Features | Filterless architecture;Enable/shutdown function;ESD protection;Automatic mute/no-noise switch |
Product Overview
NS4150B is a Nsiway Technology audio amplifier identified by the exact orderable code NS4150B. Its confirmed technical identity includes Supply voltage 3V~5.25V, Output Power 3Wx1@4Ω, Speaker Channels 1-Channel, Operating Temperature -40℃~+85℃.
The exact device is described as: 4mA 3V~5.25V 1-Channel 3Wx1@4Ω Class D MSOP-8 Audio Amplifiers. Selection should be based on the exact package and the operating conditions required by the design, rather than on a nearby family member or a generic part number.
Technical Specifications
| Parameter | Value |
|---|---|
| Package | MSOP-8 |
| Supply voltage | 3V~5.25V |
| Output Power | 3Wx1@4Ω |
| Speaker Channels | 1-Channel |
| Operating Temperature | -40℃~+85℃ |
| Quiescent Current | 4mA |
| Features | Filterless architecture;Enable/shutdown function;ESD protection;Automatic mute/no-noise switch |
| Total Harmonic Distortion + Noise (THD+N) | 0.1% |
| Number of Inputs | 1 Pair Differential Inputs |
| Efficiency | 88%;90% |
| Class | Class D |
| Power Supply Rejection Ratio (PSRR) | -80dB |
Exact-Part Selection Insight
The stated 3Wx1@4Ω output-power condition is tied to the amplifier’s 3V~5.25V supply range and the load condition embedded in that rating. Thermal design, speaker impedance and available supply voltage must be evaluated together before using the headline wattage as a continuous design target.
Selection Notes
- Package: MSOP-8
- Supply voltage: 3V~5.25V
- Output Power: 3Wx1@4Ω
- Speaker Channels: 1-Channel
- Operating Temperature: -40℃~+85℃
Application Fit
This exact part is appropriate for designs that require a audio amplifier with the confirmed package and electrical/function parameters above. Final fit depends on the surrounding circuit, interface, thermal and mechanical requirements of the target design.
Design Considerations
Confirm the available supply rail stays inside the stated operating range, including startup and transient conditions.
Check current, power dissipation and board thermal conditions at the intended operating point rather than using the headline rating alone.
Use the exact MSOP-8 footprint/package definition when checking PCB land pattern, assembly clearance and sourcing equivalence.
Quality & Verification Support
Third-party inspection or testing can be arranged according to customer requirements. Testing fees are borne by the buyer. Additional verification requirements can be discussed before shipment. After an order is placed, physical product, label, packaging, and Date Code photos may be provided where appropriate.
Request a Quote
To request a quotation, provide the manufacturer part number, required quantity, destination, target Date Code if applicable, and any testing or inspection requirements.
