The SC9930E is a high efficiency stereo class-D audio amplifier with adjustable power limit function. The loudspeaker driver operates from 5.0~26V supply voltage and analog circuit operates at 5V supply voltage. It can deliver 30W/CH output power into 4Ω or 8Ω loudspeaker within 1% THD+N at 24V supply voltage. SC9930E provides parallel BTL (Mono) application, and it can deliver 75W into 4 Ω loudspeaker at 24V supply voltage. The adjustable power limit function allows user to set a voltage rail lower than half of 5V to limit the amount of current through the speaker. Output DC detection prevents speaker damage from long-time current stress. SC9930E provides superior EMC performance for filter-free application. The output short circuit and over temperature protection include auto-recovery feature.