MP7741 10W Class D Mono Single Ended Audio Amplifer The Future of Analog IC Technology DESCRIPTION FEATURES The MP7741 is a mono 10W Class D Audio 10W Output at V = 24V into a 8 load DD Amplifier. It is one of MPS products of fully THD+N = 0.02% at 1W, 8 integrated audio amplifiers which dramatically 94% Efficiency at 10W & V =24V DD reduce solution size by integrating the following: Low Noise (103V Typical) z 250m power MOSFETs Switching Frequency Up to 1MHz 9.5V to 36V Operation from a Single Supply z Startup / Shutdown pop elimination Integrated Startup and Shutdown Pop z Short circuit protection circuits Elimination Circuit The MP7741 utilizes a single ended output Programmable UVP structure capable of delivering 10W into 8 Thermal and Short Circuit Protection speakers. MPS Class D Audio Amplifiers exhibit Integrated Power FETs the high fidelity of a Class A/B amplifier at high Available in 10-Pin QFN3x3 Package efficiencies. The circuit is based on the MPS proprietary variable frequency topology that APPLICATIONS delivers excellent linearity, fast response time Portable Docking Stations and operates on a single power supply. Surround Sound DVD Systems MP7741 features programmable VDD Televisions shutdown voltage by controlling the UVP node Flat Panel Monitors voltage. The default VDD shutdown voltage is Multimedia Computers 8.4V if the UVP pin is NC. Home Stereo Systems For MPS green status, please visit MPS website under Quality Assurance. 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 20 10 5 2 1 0.5 0.2 0.1 0.05 0.02 0.01 50m100m 1 10 20 P (W) OUT MP7741 Rev. 1.0 www.MonolithicPower.com 1 2/17/2011 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2011 MPS. All Rights Reserved. THD + N (%)MP7741 10W CLASS D MONO SINGLE ENDED AUDIO AMPLIFIER ORDERING INFORMATION Part Number* Package Top Marking Free Air Temperature (T ) A QFN10 (3mm x 3mm) MP7741DQ 6Z -40 C to +85 C * For Tape & Reel, add suffix Z (e.g. MP7741DQZ). For RoHS compliant packaging, add suffix LF (e.g. MP7741DQLFZ) PACKAGE REFERENCE (1) (4) ABSOLUTE MAXIMUM RATINGS Thermal Resistance JA JC Supply Voltage V ...................................... 40V DD 3x3 QFN10 .............................. 50 ...... 12 ....... C 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. 2) The maximum allowable power dissipation is a function of V , V , V , V ................... -1V to V + 1V UVP SW PIN NIN DD the maximum junction temperature T (MAX), the junction-to- J AGND to PGND ........................... -0.3V to +0.3V ambient thermal resistance , and the ambient temperature JA (2) Continuous Power Dissipation (T = +25C) T . The maximum allowable continuous power dissipation at A A any ambient temperature is calculated by PD (MAX) = ....2.5W (T (MAX)-T )/ . Exceeding the maximum allowable power J A JA Junction Temperature ............................... 150 C dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. Internal thermal Lead Temperature .................................... 260 C shutdown circuitry protects the device from permanent Storage Temperature ............... -65C to +150 C damage. 3) The device is not guaranteed to function outside of its (3) Recommended Operating Conditions operating conditions. 4) Measured on JESD51-7, 4-layer PCB. Supply Voltage V .......................... 9.5V to 36V DD Operating Junct. Temp (T ) ...... -40C to +125 C J MP7741 Rev. 1.0 www.MonolithicPower.com 2 2/17/2011 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2011 MPS. All Rights Reserved.