TPA0122PWPG4

Overview

The TPA0122PWPG4 is a stereo Class-AB audio power amplifier in a 24-pin PowerPAD TSSOP package. It delivers 2.6 W per channel into 3-ohm loads and operates on a 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, and depop circuitry. Supply current is 18 mA in normal operation and drops below 150 µA in shutdown.

Feature Summary

• Integrated input multiplexer allows automatic switching between line and headphone inputs based on configuration.
• Internal gain control eliminates external resistors by using two digital control pins for four BTL settings.
• Built-in depop circuitry virtually eliminates speaker transients during power-up and shutdown.
• Thermal PowerPAD package provides high thermal performance suitable for compact surface-mount designs.

Applications

• PC 99 desktop line-out circuits
• Notebook computer internal speakers
• Portable audio devices requiring low-power amplification

Procurement Notes

Verify the specific suffix 'G4' indicates lead-free compliance and RoHS status as per Texas Instruments standards. Confirm the PWP package type matches your PCB footprint requirements. Ensure the ordering suffix aligns with the desired tape-and-reel or tube packaging format if applicable. Cross-reference the manufacturer part number with official distributor catalogs to confirm current production status and availability.

Selection Notes

Select this component for applications requiring a single-supply stereo amplifier with minimal external components. The integrated MUX and gain control simplify board layout compared to discrete solutions. Consider the thermal requirements of the PowerPAD package for high-power operations into low-impedance loads. Verify that the 5 V supply voltage range matches the system architecture.

Part Context

This device belongs to the TPA01xx series of audio amplifiers from Texas Instruments. It is designed specifically for portable and PC audio applications where space and power efficiency are critical. The PowerPAD technology distinguishes it from standard TSSOP packages by offering superior heat dissipation capabilities.

Replacement Considerations

Check for TPA0122 variants with different suffixes such as PWPR for reel packaging. Consult Texas Instruments documentation for direct pin-compatible upgrades within the TPA01xx family.