NCP2890DMR2G

Overview

The NCP2890DMR2G is a Class-AB audio power amplifier in a Micro8 package. It delivers 1.0 W to an 8 Ω BTL load at 5.0 V and 320 mW to a 4 Ω BTL load at 2.6 V. Operating from 2.2 V to 5.5 V, it features 1.7 mA quiescent current, 0.04% THD+N, and 500 mA output current. The device includes thermal overload protection, pop-and-click noise suppression, and external gain configuration.

Feature Summary

• Delivers high-quality audio with minimal external components
• Features low-power shutdown mode for extended battery life
• Includes circuitry to prevent pop and click noise during transitions
• Offers excellent power supply rejection ratio for direct battery connection

Applications

• Portable communication devices
• Mobile phones
• Personal digital assistants (PDAs)
• Wireless phones

Procurement Notes

Verify the specific suffix DMR2G corresponds to the Micro8 package variant. Confirm RoHS compliance status as indicated by the G suffix. Ensure compatibility with the required PCB footprint for the Micro8 outline. Check for any automotive qualification requirements if applicable, noting that NCV prefixes are available for such applications.

Selection Notes

Select this component for portable applications requiring mono audio amplification. Consider the Micro8 package for space-constrained designs. Evaluate the need for external bypass capacitors to control turn-on time and minimize audible noise. Verify that the load impedance and supply voltage align with the specified power delivery capabilities.

Part Context

This part belongs to the NCP2890 series of 1-watt audio power amplifiers. It is designed for portable electronics where efficiency and audio quality are critical. The series offers both standard and lead-free versions in different packages to suit various manufacturing processes.

Replacement Considerations

NCP2892 is noted as an alternative offering faster turn-on times with similar bypass capacitor values.