TPA3100D2

www.ti.com QFN HTQFP TPA3100D2 SLOS469F – OCTOBER 2005 – REVISED AUGUST 2010 20-W STEREO CLASS-D AUDIO POWER AMPLIFIER Check for Samples: TPA3100D2 FEATURES 1 20-W/ch into an 8-Ω Load From a 18-V Supply 10-W/ch into an 8-Ω Load From a 12-V Supply 15-W/ch into an 4-Ω Load From a 12-V Supply Operates from 10 V to 26 V 92% Efficient Class-D Operation Eliminates Need for Heat Sinks Four Selectable, Fixed Gain Settings Differential Inputs Thermal and Short-Circuit Protection With Auto Recovery Feature Clock Output for Synchronization With Multiple Class-D Devices Surface Mount 7 mm × 7 mm, 48-pin QFN Package Surface Mount 9 mm × 9 mm, 48-pin HTQFP Package APPLICATIONS Televisions DESCRIPTION The TPA3100D2 is a 20-W (per channel) efficient, Class-D audio power amplifier for driving bridged-tied stereo speakers. The TPA3100D2 can drive stereo speakers as low as 4 Ω. The high efficiency of the TPA3100D2, 92%, eliminates the need for an external heat sink when playing music. The gain of the amplifier is controlled by two gain select pins. The gain selections are 20, 26, 32, 36 dB. The outputs are fully protected against shorts to GND, VCC, and output-to-output shorts with an auto recovery feature and monitor output. TV Audio Processor 1 mF 1 mF 1 mF 1 mF Shutdown Control Mute Control Gain Select Sync Control Fault Flag 10 V to 26 V Simplified Application Circuit TPA3100D2 RINP BSRN 0.22 mF RINN ROUTN ROUTP LINN LINP SHUTDOWN MUTE GAIN0 GAIN1 B...