TPA3138D2PWPR

Overview

The TPA3138D2PWPR is a Class-D stereo audio amplifier manufactured by Texas Instruments, housed in a 28-pin HTSSOP package. It delivers 10W per channel into 6-ohm loads at 12V supply with 1% THD+N, or 18.5W in mono mode into 4-ohm loads. The device operates on a wide voltage range of 3.5V to 14.4V and features an idle current of 20mA at 12V in single-power-wire mode. Total harmonic distortion plus noise is rated at 0.04%. It supports analog inputs with selectable gains of 20dB or 26dB.

Feature Summary

• Inductorless operation enables compliance with EN55013 and EN55022 EMC standards without external filters.
• Advanced EMI suppression utilizes spread spectrum control to reduce system costs while maintaining performance.
• Integrated protection mechanisms include automatic recovery for overvoltage, undervoltage, thermal shutdown, power limiting, short circuits, and DC speaker faults.

Applications

• Bluetooth speakers and wireless audio systems
• Television and monitor integrated audio solutions
• Battery-powered portable devices requiring extended playback time

Procurement Notes

Verify the specific suffix PWPR corresponds to the tape and reel packaging configuration required for your assembly line. Confirm that the 28-HTSSOP footprint matches your PCB design guidelines. Ensure compatibility with the 3.5V to 14.4V operating voltage range for your target application's power supply architecture before finalizing procurement.

Selection Notes

Select this component when designing for high efficiency exceeding 90% and low quiescent current in space-constrained environments. It serves as a direct pin-to-pin replacement for the TPA3110D2, TPA3136D2, and TPA3136AD2, facilitating easy upgrades or redesigns. Choose this model if inductorless filter designs are preferred to minimize bill of materials cost and board area.

Part Context

This part belongs to the TPA3138D2 series of D-class audio amplifiers from Texas Instruments. It is designed specifically for applications demanding high output power relative to its small form factor. The device integrates necessary protections to ensure robust operation in consumer electronics, distinguishing it from basic amplifier variants lacking comprehensive fault management features.

Replacement Considerations

The TPA3138D2 is pin-compatible with the TPA3110D2, TPA3136D2, and TPA3136AD2. Designers can substitute these parts directly without altering the PCB layout, provided the electrical requirements such as voltage range and output power align with the specific application needs.