TDA7491P 2 x 10-watt dual BTL class-D audio amplifier Features 10 W + 10 W continuous output power: R = 6 , THD = 10% at V = 11 V L CC 9.5 W + 9.5 W continuous output power: R = 8 , THD = 10% at V = 12 V L CC Wide range single supply operation (5 V - 18 V) High efficiency ( = 90%) PowerSSO-36 with Four selectable, fixed gain settings of exposed pad down nominally 20 dB, 26 dB, 30 dB and 32 dB Differential inputs minimize common-mode noise Description Filterless operation The TDA7491P is a dual BTL class-D audio No pop at turn-on/off amplifier with single power supply designed for Standby and mute features LCD TVs and monitors. Short-circuit protection Thanks to the high efficiency and Thermal overload protection exposed-pad-down (EPD) package no separate heatsink is required. Externally synchronizable Furthermore, the filterless operation allows a reduction in the external component count. The TDA7491P is pin-to-pin compatible with the TDA7491LP and TDA7491HV. Table 1. Device summary Order code Operating temperature Package Packaging TDA7491P -40 to 85 C PowerSSO-36 EPD Tube TDA7491P13TR -40 to 85 C PowerSSO-36 EPD Tape and reel January 2012 Doc ID 13540 Rev 6 1/42 www.st.com 42 Contents TDA7491P Contents 1 Device block diagram 7 2 Pin description . 8 2.1 Pin out 8 2.2 Pin list . 9 3 Electrical specifications . 10 3.1 Absolute maximum ratings 10 3.2 Thermal data 10 3.3 Electrical specifications 11 4 Characterization curves . 13 4.1 With 4- load at V = 10 V 13 CC 4.2 With 6- load at V = 11 V 18 CC 4.3 With 8- load at V = 12 V 24 CC 5 Applications information 29 5.1 Applications circuit 29 5.2 Mode selection . 30 5.3 Gain setting . 31 5.4 Input resistance and capacitance . 31 5.5 Internal and external clocks . 32 5.5.1 Master mode (internal clock) . 32 5.5.2 Slave mode (external clock) 32 5.6 Modulation 33 5.6.1 Reconstruction low-pass filter 34 5.6.2 Filterless modulation . 34 5.7 Protection functions . 36 5.8 Diagnostic output . 36 5.9 Heatsink requirements . 37 5.10 Test board . 38 6 Package mechanical data 39 2/42 Doc ID 13540 Rev 6