TPA0172PWP

Overview

The TPA0172PWP is a stereo audio power amplifier in a 24-pin TSSOP PowerPAD package. It delivers 2 W continuous RMS power per channel into 4-Ω loads with a supply voltage range of 4.5 V to 5.5 V. The device features I2C bus control for digital volume adjustment from 20 dB to -60 dB and includes integrated depop circuitry to eliminate startup transients. Operating current is 6.5 mA, reducing to under 15 µA in shutdown mode.

Feature Summary

• I2C bus controllable functionality minimizes external components
• Integrated depop circuitry eliminates speaker noise during power transitions
• Digital volume control provides 64 gain steps via internal registers
• Stereo input multiplexer supports line and headphone signal selection

Applications

• PC 99 desktop line-out circuits
• Portable devices driving 8-Ω speakers
• Notebook computer audio systems

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm packaging type. Standard tube packaging applies to the base part number, while taped and reeled options require an 'R' suffix. Confirm thermal pad connectivity requirements for the PowerPAD package during integration.

Selection Notes

Select this component for designs requiring low supply current and minimal external parts count. The I2C interface allows system-level volume management without additional hardware. Ensure PCB layout supports the thermal performance of the PowerPAD package for full power operation at elevated temperatures.

Part Context

This device belongs to the Texas Instruments TPA0172 series of stereo audio amplifiers. It utilizes CMOS technology to achieve high efficiency and low distortion. The PowerPAD package provides thermal performance comparable to larger TO-200 packages, enabling compact board designs.

Replacement Considerations

TPA0172PWPR is the taped and reeled version of this component.