HT366MTER

HT366 is a high-efficiency Class-D stereo audio power amplifier. In mono PBTL mode, it can drive a speaker to deliver up to 34W into 4Ω. In stereo BTL mode, it provides 2×20W into 4Ω. Its advanced EMI suppression technology allows the use of low-cost ferrite bead filters to meet EMC requirements, reducing system cost. The device integrates comprehensive fault protection features, including overvoltage, undervoltage, overtemperature, DC detection, and overcurrent protection, with fault status reporting to the processor to prevent device damage. The HT366 features anti-clipping distortion functionality that detects and automatically suppresses output signal clipping caused by excessive input signals or dropping battery supply voltage, significantly improving audio quality, delivering a comfortable listening experience, and protecting the speaker from overload damage.

Applications

• Soundbars
• Wireless speakers
• Consumer audio applications
• TVs/Monitors
• Portable speakers

Key features

• Output power: 2×22W in BTL mode (VDD=14V, RL=4Ω, THD+N=10%); 34W in PBTL mode (VDD=16V, RL=4Ω, THD+N=10%)
• Single-supply wide voltage range: 4.5V~16V
• Anti-clipping distortion protection
• Selectable operating modes: BD or 1SPW
• Efficiency > 90%
• Differential/single-ended analog input, BTL or PBTL output
• Selectable gain: 32dB or 17.6dB
• Integrated protection circuits: overvoltage, undervoltage, overtemperature, DC detection, and overcurrent protection with fault reporting
• Available in ETSSOP28 package