NAU83P20YG

Overview

The NAU83P20YG is a single-supply, 20W stereo Class-D audio power amplifier manufactured by Nuvoton Technology Corporation. It operates from an 8V to 24V supply and delivers 2x20W into 8-ohm loads at 10% THD+N. The device features a typical power efficiency of 90%, a signal-to-noise ratio of 105dB, and supports multiple output configurations including bridge-tied load (BTL), single-ended, and partial BTL modes. It includes integrated 3V and 5V LDOs for internal logic and gate drive support.

Feature Summary

• Integrated fault detection system monitoring over-temperature, under-voltage, and over-current conditions with dedicated digital output signals.
• Configurable slew rate control via the ENSLEWB pin to manage output driver switching speed and minimize electromagnetic interference.
• Supports flexible output topologies including dual-channel bridged, four-channel single-ended, and mixed configurations.
• Includes internal low-dropout regulators providing stable 3V and 5V supplies for PWM controller and gate driver operation.

Applications

• LCD televisions
• TV sound bars
• Automotive stereo systems
• Portable media boom boxes
• Home entertainment systems

Procurement Notes

Verify the specific ordering suffix 'YG' against the manufacturer's current datasheet revision to confirm package material and RoHS compliance status. Ensure the design accommodates the required thermal dissipation for the QFN-48 package, as performance relies heavily on PCB heat sinking techniques. Confirm that the external power supply meets the 8V to 24V operating range and provides sufficient current capacity for peak audio demands.

Selection Notes

Select this component for applications requiring high-efficiency stereo amplification from a single voltage rail. The device is suitable where configurable output modes allow optimization for different speaker impedances and wiring constraints. Consider the integrated protection features for robust automotive or consumer electronics environments. Evaluate the need for external bootstrap capacitors based on the chosen PWM switching frequency to ensure proper high-side gate drive functionality.

Part Context

The NAU83P20 belongs to Nuvoton's emPowerAudio series of Class-D amplifiers. It is designed to replace traditional linear or lower-efficiency switching amplifiers in portable and fixed audio systems. The QFN-48 package facilitates compact board layouts while providing necessary thermal paths through the exposed pad.

Replacement Considerations

NAU83P20