TPA0172PWPR

Overview

The TPA0172PWPR 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. The device uses I2C bus control for functionality, minimizing external components. It features integrated depop circuitry to eliminate speaker transients during power transitions. Supply current is 6.5 mA in normal operation and less than 15 µA in shutdown mode. The PowerPAD package provides thermal performance suitable for full-power operation at ambient temperatures up to 85°C.

Feature Summary

• I2C bus controllable digital volume control from 20 dB to -60 dB
• Integrated depop circuitry eliminates speaker noise during startup and shutdown
• Stereo input MUX supports line and headphone inputs with PC-beep capability
• Internal gain control eliminates the need for external gain-setting resistors

Applications

• PC 99 desktop line-out applications
• PC 99 portable audio systems
• Notebook computer audio circuits
• Headphone amplifiers

Procurement Notes

Verify the specific ordering suffix R indicates taped and reeled packaging as defined by Texas Instruments. Confirm the I2CVDD voltage level matches the system bus requirements of 3.3 V or 5 V. Ensure the PCB layout utilizes the PowerPAD thermal pad effectively to maintain the specified thermal impedance and operating temperature range.

Selection Notes

Select this component for designs requiring low supply current and minimal external parts count. The I2C interface allows for flexible gain and input selection without additional hardware. Consider the thermal performance of the PowerPAD package for high ambient temperature environments. Verify compatibility with single-ended or fully differential input configurations based on the application schematic.

Part Context

The TPA0172 is part of the Texas Instruments audio amplifier family designed for portable and desktop audio applications. It utilizes CMOS technology to achieve high efficiency and low distortion. The device is housed in a thermally enhanced 24-pin TSSOP package, distinguishing it from standard surface-mount options by offering superior heat dissipation capabilities for sustained high-power output.

Replacement Considerations

TPA0172PWP