TPA2050D4YZKT

Overview

The TPA2050D4YZKT is a stereo Class-D audio subsystem manufactured by Texas Instruments. It integrates two 1.4 W channels and a DirectPath headphone amplifier with a 3:1 input multiplexer. The device operates from a single supply voltage ranging from 2.7 V to 5.5 V. It utilizes a compact 16-pin WQFN package measuring 3 mm by 3 mm. Key electrical parameters include a quiescent current of 18 mA per channel and a shutdown current of less than 1 µA. The unit supports PWM frequencies up to 1.2 MHz and delivers high efficiency with low total harmonic distortion plus noise.

Feature Summary

• Integrates a stereo Class-D amplifier and a DirectPath headphone driver within a single chip
• Includes a 3:1 input multiplexer for flexible audio source selection
• Features ultra-low power consumption with automatic sleep mode activation during idle periods
• Provides robust protection mechanisms including thermal shutdown and short-circuit protection

Applications

• Portable media players and MP3 devices
• Mobile phones and smartphones
• Personal digital assistants (PDAs)
• Digital cameras and camcorders

Procurement Notes

Verify the specific suffix D4YZKT to confirm the tape and reel packaging configuration. Ensure compatibility with the required operating voltage range of 2.7 V to 5.5 V. Confirm that the design accommodates the 16-pin WQFN thermal pad requirements for adequate heat dissipation. Check for any lead-free or RoHS compliance markings on the component marking code.

Selection Notes

Select this component when a combined solution for speaker amplification and direct-drive headphones is required. It is suitable for space-constrained portable designs due to its small footprint. Consider the 3:1 mux capability if multiple audio inputs need switching without external components. Evaluate the thermal performance in the final enclosure to ensure reliable operation under maximum load conditions.

Part Context

This part belongs to the TPA205x family of audio subsystems designed for mobile applications. It shares functional similarities with the TPA2054D4A, which also features a stereo Class-D amplifier and DirectPath headphone amp. Both devices target similar portable electronics markets requiring integrated audio solutions with minimal external passive components.

Replacement Considerations

The TPA2054D4A is a functionally equivalent alternative within the same product family. Verify pin-to-pin compatibility and identical package dimensions before substitution. Ensure that the replacement part meets the same electrical specifications for output power and supply voltage ranges.