TPA3120D2PWPG4

Overview

The TPA3120D2PWPG4 is a 25-W stereo Class-D audio power amplifier from Texas Instruments, housed in a 24-pin HTSSOP package. It operates on a single supply voltage ranging from 10 V to 30 V. The device delivers up to 25 W per channel into a 4-ohm load at a 27-V supply and 20 W per channel at a 24-V supply. It features four selectable fixed-gain settings of 20, 26, 32, and 36 dB, controlled via GAIN0 and GAIN1 pins. The amplifier includes an internal oscillator, eliminating the need for external timing components.

Feature Summary

• Efficient Class-D operation eliminates the need for external heat sinks during music playback.
• Patented start-up and shut-down sequences minimize pop noise without additional circuitry.
• Integrated thermal and short-circuit protection with automatic recovery capabilities.

Applications

• Televisions
• System Two Audio Precision testing

Procurement Notes

Verify the component authenticity by checking the manufacturer marking against the official datasheet specifications. Confirm the package type matches the 24-pin HTSSOP form factor. Ensure the ordering suffix aligns with lead-free and RoHS compliance requirements as indicated by the G4 designation. Cross-reference the part number with the latest Texas Instruments product folder to confirm current production status and availability.

Selection Notes

Select this amplifier for applications requiring high efficiency and minimal thermal management. Consider the input impedance variations associated with different gain settings when designing the input network. Ensure adequate power-supply decoupling and bootstrap capacitors are included in the design to maintain performance and stability. Verify that the speaker impedance and supply voltage meet the operational limits defined in the recommended operating conditions.

Part Context

This component belongs to the TPA3120 family of stereo Class-D audio amplifiers. It is designed for driving stereo speakers in a single-ended configuration or a mono bridge-tied load. The device is part of Texas Instruments' portfolio of efficient audio power solutions aimed at reducing system size and cost by removing the requirement for large heat sinks.

Replacement Considerations

TPA3120D2PWP

FAQ

How is the amplifier gain configured?

The gain is set using two logic inputs, GAIN0 and GAIN1, which allow selection among four fixed gain levels: 20, 26, 32, and 36 dB.

What protection features are integrated?

The device includes thermal protection that triggers at 150°C and short-circuit protection on the outputs, both featuring automatic recovery without latching.