TPA3137D2PWPR

Overview

The TPA3137D2PWPR is a Class-D audio amplifier manufactured by Texas Instruments, housed in a 28-HTSSOP package. It delivers 6 W of stereo output power into a 2-ohm load and 12 W mono power into a 4-ohm load. The device operates on a supply voltage range of 4.5 V to 14.4 V with a fixed gain of 26 dB. Total Harmonic Distortion plus Noise (THD+N) is rated at 0.06%. It features analog inputs, supports shutdown modes, and functions within an operating temperature range of -40°C to +85°C.

Feature Summary

• Inductor-free operation eliminates the need for bulky external inductors.
• Integrated SpeakerGuard protection includes power limiting and DC detection circuits.
• Advanced EMI suppression utilizes spread spectrum control technology.
• Robust protection mechanisms include automatic recovery from short circuits and thermal overload.

Applications

• Televisions
• Bluetooth and wireless speakers
• Mini speakers
• USB speakers
• Consumer audio equipment

Procurement Notes

Verify the specific suffix 'PWPR' corresponds to the HTSSOP-28 package and tape-and-reel delivery format. Confirm RoHS compliance status and Moisture Sensitivity Level (MSL 3) requirements during storage and handling. Ensure the ordering part number matches the exact pinout and electrical specifications required for the target design.

Selection Notes

Select this component when a compact, high-efficiency D-class solution is needed for low-to-mid power stereo applications. It is suitable for designs requiring inductor-free outputs and robust speaker protection. Consider alternative models like the TPA3136D2 or TPA3138D2 if higher power ratings or different supply voltage ranges are required.

Part Context

This device belongs to the TPA3137D2 series of efficient D-class audio amplifiers. It is designed to drive bridge-tied load (BTL) speakers directly without external output filters. The family focuses on reducing system cost through integrated protection and enhanced electromagnetic interference performance.

Replacement Considerations

The TPA3136D2PWPR offers similar functionality but provides higher power output (10W stereo). The TPA3138D2PWPR supports lower minimum supply voltages (3.5V) and higher mono power. Verify pin compatibility and thermal requirements before substitution.