TPA0232PWP

Overview

The TPA0232PWP is a stereo Class-AB audio power amplifier in a 24-pin thermally enhanced PowerPAD TSSOP package. It delivers 2.8 W per channel into 3-ohm loads with less than 0.4% THD+N at 1 W output into 8-ohm speakers. Operating on a single 4.5 V to 5.5 V supply, it features integrated DC volume control from +20 dB to -40 dB, input MUX selection, and PC-Beep detection. The device includes depop circuitry to eliminate speaker transients and offers low supply current of 10 mA in operation and 150 µA in shutdown mode.

Feature Summary

• Integrated DC voltage-controlled volume adjustment providing 31 discrete gain steps without external resistors
• Dual stereo input multiplexer allowing automatic switching between headphone and line inputs based on SE/BTL mode
• Built-in depop circuitry that virtually eliminates audible transients during power-up and shutdown sequences
• Thermally enhanced PowerPAD package enabling high power dissipation in a compact surface-mount footprint

Applications

• PC99 compliant desktop computer line-out stages
• Portable computer internal speaker amplification
• Notebook computer audio subsystems requiring BTL or SE modes
• Systems requiring integrated mute and volume control functions

Procurement Notes

Verify the specific ordering suffix when sourcing replacement units. The base part number TPA0232PWP denotes tube packaging, while the suffix R indicates taped and reeled configuration. Confirm thermal pad soldering requirements for the PWP package to ensure proper heat dissipation and mechanical stability in the final assembly design.

Selection Notes

Select this component for designs requiring a single-supply Class-AB solution with minimal external component count. It is suitable for applications needing precise DC volume control and input source switching. Ensure the PCB layout supports the thermal pad connection to achieve the specified power handling capabilities within the operating temperature range.

Part Context

This device belongs to Texas Instruments' TPA0232 series of stereo audio power amplifiers. It is designed specifically for portable and desktop computing environments where board space is limited. The series emphasizes integration by combining amplification, volume control, and input routing into a single IC, reducing the overall bill of materials for audio subsystems.

Replacement Considerations

TPA0232PWPR