MAX9736BETJ+

Audio Amplifiers Overview

The MAX9736BETJ+ is a mono/stereo high-power Class D audio amplifier from Maxim Integrated. It delivers 2 x 6W into 8Ω loads or 1 x 12W into a 4Ω load. The device operates from an 8V to 28V supply range and provides up to 88% efficiency at 12V. It features pin-selectable filterless modulation for low EMI or classic PWM modulation for optimal audio performance with LC filters. Comprehensive click-and-pop reduction minimizes noise during shutdown or mute transitions.

Audio Amplifiers Feature Summary

• Pin-selectable modulation schemes allow selection between filterless spread-spectrum operation and classic PWM modulation.
• Integrated comprehensive click-and-pop reduction circuitry minimizes audible transients during mode transitions.
• High power-supply rejection ratio reduces the need for regulated power supplies.
• Mono mode enables parallel channel operation while freeing the right-channel preamplifier as a spare operational amplifier.

Audio Amplifiers Applications

• LCD/PDP/CRT monitors
• LCD/PDP/CRT TVs
• MP3 docking stations
• Notebook PCs
• PC speakers

Audio Amplifiers Procurement Notes

Verify the specific suffix ETJ+ corresponds to the 32-pin TQFN package (5mm x 5mm) and RoHS compliance status as indicated in official ordering information. Confirm that the component matches the MAX9736B variant specifications, specifically the 6W per channel output rating, rather than the higher-power A or D variants. Ensure the datasheet revision aligns with current manufacturing standards.

Audio Amplifiers Selection Notes

Select this component when system design requires a balance of moderate output power and minimal external filtering. The filterless modulation option significantly reduces bill-of-materials cost by eliminating bulky LC components. Consider the thermal dissipation characteristics on the PCB layout, as the device relies on board copper area for heat sinking rather than external heatsinks.

Audio Amplifiers Part Context

The MAX9736 family includes variants optimized for different power levels: the MAX9736A delivers up to 30W in mono mode, while the MAX9736D offers thermally limited performance. The MAX9736B/D series targets applications requiring 12W mono output. All variants share the same control interface and modulation options but differ in output stage capabilities and package thermal resistance profiles.

Audio Amplifiers Replacement Considerations

Direct functional substitutes within the same family include the MAX9736DETJ+ for identical electrical performance in the smaller 5x5mm package. For higher power requirements, the MAX9736AETJ+ serves as an upgrade path. Verify pin compatibility and thermal management requirements when transitioning between these variants.