MP7740 15W Class D Mono Single Ended Audio Amplifer The Future of Analog IC Technology DESCRIPTION FEATURES The MP7740 is a mono 15W Class D Audio 15W Output at V = 24V into a 4 load DD Amplifier. It is one of MPS products of fully THD+N = 0.05% at 1W, 8 integrated audio amplifiers which dramatically 90% Efficiency at 15W & V =24V DD reduces solution size by integrating the Low Noise (103V Typical) following: Switching Frequency Up to 1MHz 250m power MOSFETs 9.5V to 36V Operation from a Single Supply Startup / Shutdown pop elimination Integrated Startup and Shutdown Pop Elimination Circuit Short circuit protection circuits Thermal and Short Circuit Protection The MP7740 utilizes a single ended output Integrated Power FETs structure capable of delivering 15W into 4 Pin Compatible with MP7720 speakers. MPS Class D Audio Amplifiers exhibit Available in Tiny 8-Pin SOIC Package the high fidelity of a Class A/B amplifier at high efficiencies. The circuit is based on the MPS APPLICATIONS proprietary variable frequency topology that Portable Docking Stations delivers excellent linearity, fast response time Surround Sound DVD Systems and operates on a single power supply. Televisions Flat Panel Monitors Multimedia Computers Home Stereo Systems MPS and The Future of Analog IC Technology are Registered Trademarks of Monolithic Power Systems, Inc. AAM (Analog Adaptive Modulation) is a Trademark of Monolithic Power Systems, Inc. TYPICAL APPLICATION THD+N vs. P V OUT DD V =24V,Freq=1kHz,A-wtd DD 4 6 OFF ON EN VDD 20 10 1 8 PIN PGND 5 MP7740 2 5 NIN BS 2 1 3 7 AGND SW 0.5 0.2 0.1 AUDIO INPUT 0.05 + 0.02 0.01 60m 200m 1 5 20 P (W) OUT MP7740 Rev. 0.9 www.MonolithicPower.com 1 9/22/2009 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. 2009 MPS. All Rights Reserved. THD+N (%)MP7740 15W CLASS D MONO SINGLE ENDED AUDIO AMPLIFIER ORDERING INFORMATION Part Number* Package Top Marking Temperature MP7740DN SOIC8E MP7740DN 40 C to +85C *For Tape & Reel, add suffix Z (eg. MP7740DNZ) For RoHS compliant packaging, add suffix LF (eg. MP7740DNLFZ) PACKAGE REFERENCE TOP VIEW PIN 1 8 PGND NIN 2 7 SW AGND 3 6 VDD EN 4 5 BS EXPOSED PAD ON BACKSIDE (1) (4) ABSOLUTE MAXIMUM RATINGS Thermal Resistance JA JC Supply Voltage V ...................................... 40V SOIC8E .................................. 50....... 8......... C DD BS Voltage..................V 0.3V to V + 6.5V SW SW Notes: Enable Voltage V ........................0.3V to +6V EN 1) Exceeding these ratings may damage the device. V ................... 1V (-5V for <10ns) to V + 1V SW DD 2) The maximum allowable power dissipation is a function of the maximum junction temperature T (MAX), the junction-to- V , V ................................... 1V to V + 1V J PIN NIN DD ambient thermal resistance , and the ambient temperature JA AGND to PGND ..........................0.3V to +0.3V T . The maximum allowable continuous power dissipation at A Continuous Power Dissipation (T = +25C) any ambient temperature is calculated by P (MAX) = (T A D J (2) (MAX)-T )/ . Exceeding the maximum allowable power A JA dissipation will cause excessive die temperature, and the ...2.5W regulator will go into thermal shutdown. Internal thermal Junction Temperature...............................150C shutdown circuitry protects the device from permanent damage. Lead Temperature ....................................260C 3) The device is not guaranteed to function outside of its Storage Temperature.............. 65 C to +150 C operating conditions. 4) Measured on JESD51-7, 4-layer PCB. (3) Recommended Operating Conditions Supply Voltage V ..........................9.5V to 36V DD Operating Temperature T ........ 40C to +85 C A MP7740 Rev. 0.9 www.MonolithicPower.com 2 9/22/2009 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. 2009 MPS. All Rights Reserved.