TPA3118D2DAP

Overview

The TPA3118D2DAP is a stereo Class-D audio power amplifier manufactured by Texas Instruments. It delivers up to 30W per channel into an 8Ω load and operates on a single supply voltage ranging from 4.5V to 26V. The device utilizes a 32-pin HTSSOP package with the PowerPAD oriented downward for thermal management. It features multiple switching frequency options to suppress AM interference and includes comprehensive protection mechanisms such as overvoltage, undervoltage, thermal shutdown, and short-circuit detection.

Feature Summary

• Integrates advanced oscillators and PLL circuits with multiple switching frequencies to effectively suppress AM radio interference.
• Supports flexible output configurations including stereo mode and mono parallel bridge-tied load (PBTL) operation.
• Incorporates integrated self-protection circuits that detect faults like overvoltage, undervoltage, thermal issues, and DC offset.
• Features programmable power limiting capabilities to manage output levels and protect connected speakers.

Applications

• Portable PA systems
• Active loudspeakers
• Soundbars
• Home theater systems

Procurement Notes

Verify the specific suffix DAP indicates the downward-facing PowerPAD configuration in the HTSSOP-32 package. Confirm the component status is active or obsolete through official Texas Instruments channels before finalizing procurement plans. Ensure compatibility with the intended PCB layout regarding thermal dissipation requirements for this specific package orientation.

Selection Notes

Select this component when designing applications requiring up to 30W per channel without external heat sinks on double-layer PCBs. Consider the downward PowerPAD design if space constraints prevent top-side mounting of heatsinks. Evaluate the need for multiple switching frequencies to meet specific electromagnetic compatibility requirements in the target environment.

Part Context

This part belongs to the TPA31xxD2 series of efficient stereo digital amplifier power stages. It shares the same physical footprint as higher-power variants like the TPA3116D2 and lower-power TPA3130D2, allowing for scalable PCB designs across different power classes within the same product family.

Replacement Considerations

The TPA3118D2DAPR serves as a tape-and-reel alternative offering identical electrical performance but differing only in packaging format. Verify pinout and thermal pad orientation compatibility when substituting between DAP and DADR suffixes.