TPA3120D2PWP

Overview

The TPA3120D2PWP is a 25-W stereo Class-D audio power amplifier in a 24-pin HTSSOP package. It operates from a 10-V to 30-V supply and delivers 20 W into a 4-ohm load at 24 V. The device features four selectable fixed gains (20, 26, 32, 36 dB) via GAIN0/GAIN1 pins. It includes an internal oscillator, single-ended analog inputs, and patented pop-noise minimization sequences.

Feature Summary

• Eliminates the need for external heat sinks through efficient Class-D operation.
• Features patented start-up and shut-down sequences to minimize speaker pop noise.
• Includes thermal protection with auto-recovery and short-circuit protection on outputs.

Applications

• Televisions
• Audio systems

Procurement Notes

Verify the exact part number against the manufacturer's official documentation to ensure compatibility with your specific design requirements. Confirm that the 24-pin HTSSOP package dimensions match your PCB footprint. Check for any specific ordering suffixes that may indicate variations in packaging or environmental compliance.

Selection Notes

Select this component for applications requiring high-efficiency stereo amplification without external heatsinks. Ensure the power supply voltage stays within the 10-V to 30-V range. Consider the gain settings and input impedance variations when designing the preceding audio stage filter network.

Part Context

This device belongs to Texas Instruments' TPA3120 series of Class-D audio amplifiers. It is designed for driving stereo speakers in a single-ended configuration or a mono speaker in a bridge-tied load setup. The series emphasizes space-saving surface-mount packaging and integrated protection features.

Replacement Considerations

TPA3120D2PWPG4 is a lead-free version of the same device. Verify pinout and electrical specifications before substitution.

FAQ

How is the amplifier gain configured?

Gain is set using two logic pins, GAIN0 and GAIN1, allowing for four selectable fixed gain settings: 20, 26, 32, or 36 dB.

What protection features are included?

The device includes thermal protection with auto-recovery and short-circuit protection on the outputs.