DESCRIPTION  
The SC9930 is a high efficiency, 2 channel bridged-tied  load (BTL), class-D audio power amplifier. Operating from   a 16V power supply, SC9930 is capable of delivering  15W/ channel of continuous output power to a 8Ω load  with 10% THD+N. The SC9930 features a differentia l  input architecture offering improved noise immunity over a  single-ended (SE) input amplifier. Amplifier gain is  internally configured and can be selected to 20, 26, 32 or  36dB utilizing the G0 and G1 gain select pins. Advanced  EMI suppression technology enables the use of  inexpensive ferrite bead at the outputs while meeting EMC  requirements.  The speaker protection circuitry is integrated into SC9930 to limit the amount of current through the speaker. Meanwhile, the AGC detects output signal clip  due to the over level input signal and suppresses it  automatically. The SC9930 also features short - circuit  and thermal protection preventing the device from being  damaged during a fault condition. The SC9930 is  available in thermally efficient 28-pin TSSOP package.  

FEATURES 
● Wide Supply Voltage: 7.8V to 28V 
● Unique Modulation Scheme Reduces EMI Emission 
● 15-W into an 8-Ω Load From a 16-V Supply 
● 10-W into an 8-Ω Load From a 13-V Supply 
● 88W into a 4-Ω Mono Load From a 24-V Supply 
● 93% Efficient Class-D Operation Eliminates Need for Heat Sinks 
● Four Selectable, Gain Settings 
● Differential Inputs 
● Speaker Protection Circuitry 
● Auto Gain Control and Power Clamp 
● Thermal and Short-Circuit Protection 
● 28-pin TSSOP Package with Thermal Pad 
● RoHS compliant and 100% lead(Pb)-free Halogen-Free 

APPLICATIONS 
● Audio speaker 

Typical Application Circuit