NJM386BM

Overview

The NJM386BM is a low-voltage Class-AB audio amplifier manufactured by Nisshinbo Micro Devices. It features a single-channel mono output configuration housed in an 8-pin DMP package. The device operates within a supply voltage range of 4 V to 18 V and delivers 1 W of output power into a 32 Ohm load. Key electrical parameters include a total harmonic distortion plus noise (THD+N) of 0.1%, a gain of 46 dB, and a quiescent current of 5 mA. The input bias current is specified at 100 nA with a single-ended input type. The component supports surface-mount installation and functions reliably across an industrial temperature range from -40°C to +85°C.

Feature Summary

• Class-AB amplification topology for high-fidelity audio reproduction
• Low voltage operation capability suitable for portable applications
• Single-ended input interface simplifying circuit design
• Integrated thermal protection mechanisms

Applications

• Portable audio players
• Miniature speaker systems
• Home entertainment equipment
• Automotive audio interfaces

Procurement Notes

Verify the specific ordering suffix 'TE2' against the manufacturer's latest documentation to confirm tape-and-reel packaging details. Confirm RoHS compliance status through official environmental declarations. Check for end-of-life notifications or discontinuation notices prior to procurement planning. Ensure compatibility with existing PCB footprints designated for the DMP-8 package variant.

Selection Notes

Select this component when a single-channel mono amplifier is required with low distortion characteristics. Consider the 4 V to 18 V supply range for flexible power budgeting. Evaluate the 5 mA operating current for battery-powered constraints. Verify that the 32 Ohm load impedance matches the target speaker specifications for optimal power delivery.

Part Context

The NJM386B series represents a line of low-voltage audio amplifiers designed by New Japan Radio, now part of Nisshinbo Micro Devices. This series targets consumer electronics requiring compact solutions. The BM variant specifically denotes the surface-mount package option within the broader NJM386 family, offering integration capabilities for modern printed circuit board designs.

Replacement Considerations

Consult the manufacturer's datasheet for officially confirmed substitute part numbers. Cross-reference pin configurations and electrical specifications with potential alternatives. Verify package compatibility before considering any generic replacements.