TPA0112PWPR

Overview

The TPA0112PWPR is a stereo Class-AB audio power amplifier in a 24-pin PowerPAD TSSOP package. It delivers 2.6 W per channel into 3 Ω loads and operates on a single 4.5 V to 5.5 V supply. The device features four selectable BTL gain settings (2, 6, 12, and 24 V/V) via GAIN0/GAIN1 pins, with SE mode fixed at 1 V/V for headphone drive. It includes an internal input MUX, PC-Beep functionality, depop circuitry, and low shutdown current (<150 µA).

Feature Summary

• Integrated stereo input multiplexer allows automatic switching between line and headphone inputs based on configuration.
• Internal gain control eliminates external resistors, offering four selectable bridge-tied load gain levels.
• Depop circuitry virtually eliminates startup transients and speaker noise during power cycles.
• PowerPAD thermal enhancement provides high heat dissipation comparable to larger through-hole packages.

Applications

• PC 99 desktop line-out circuits
• Notebook computer internal speakers
• Headphone amplification stages

Procurement Notes

Verify the PWP suffix indicates the thermally enhanced PowerPAD TSSOP package. Confirm the 'R' suffix denotes tape-and-reel packaging. Ensure the component matches the SLOS204C datasheet revision. Check for RoHS compliance status as specified in the manufacturer's production data.

Selection Notes

Select this amplifier for single-supply 5V applications requiring high output power in a compact surface-mount form factor. The integrated MUX simplifies designs needing both line-out and headphone outputs. Consider the thermal requirements of the PowerPAD package for PCB layout optimization to ensure reliable operation at maximum power.

Part Context

This component belongs to Texas Instruments' legacy stereo audio amplifier family designed for PC audio subsystems. It utilizes Class-AB topology to balance efficiency and sound quality. The PowerPAD package was developed to address thermal constraints in thin notebook designs where traditional TO-220 packages are unsuitable.

Replacement Considerations

TPA0112PWP