MP7722 2 x 20W Class D Stereo Single Ended Audio Amplifer The Future of Analog IC Technology DESCRIPTION FEATURES The MP7722 is a stereo 2 x 20W Class D Audio 2 x 20W Output at V = 24V into a 4 load DD Amplifier. It is one of MPS second generation THD+N = 0.06% at 1W, 8 fully integrated audio amplifiers which 93% Efficiency at 20W dramatically reduces solution size by integrating Low Noise (190V Typical) the following: Switching Frequency Up to 1MHz 180m power MOSFETs 9.5V to 24V Operation from a Single Supply Integrated Startup and Shutdown Pop Startup / Shutdown pop elimination Elimination Circuit Short circuit protection Thermal and Short Circuit Protection Mute / Standby Integrated 180m Switches The MP7722 utilizes a single ended output Mute/Standby Modes (Sleep) structure capable of delivering 2 x 20W into 4 Thermally Enhanced 20-Pin TSSOP speakers. MPS Class D Audio Amplifiers exhibit Package with Exposed Pad the high fidelity of a Class A/B amplifier at APPLICATIONS efficiencies greater than 90%. The circuit is based on the MPS proprietary variable Surround Sound DVD Systems frequency topology that delivers low distortion, Televisions fast response time and operates on a single Flat Panel Monitors power supply. 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 V DD THD+N vs Output Power 24V, f = 1KHz 2 REF1 10 17 BS1 CH1 3 IN1 INPUT 19 SW1 CH1 1 MP7722 OUTPUT 8 REF2 12 BS2 14 SW2 0.1 CH2 7 IN2 18 INPUT VDD1 V CH2 DD 6 20 EN1 OUTPUT PGND1 10 EN EN2 13 4 AGND1 VDD2 0.01 15 9 AGND2 PGND2 0.1 1 10 OUTPUT POWER (W) MP7722 Rev. 1.5 www.MonolithicPower.com 1 1/22/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. 2010 MPS. All Rights Reserved. THD+N (%)MP7722 2 x 20W CLASS D STEREO SINGLE ENDED AUDIO AMPLIFIER (1) PACKAGE REFERENCE ABSOLUTE MAXIMUM RATINGS Supply Voltage V ...................................... 26V DD TOP VIEW BS Voltage.................. V 0.3V to V + 6.5V SW SW Enable Voltage V ........................0.3V to +6V EN NC 1 20 PGND1 V , V , V ........................... 1V to V + 1V SW PIN NIN DD REF1 2 19 SW1 AGND to PGND..........................0.3V to +0.3V IN1 3 18 VDD1 Junction Temperature............................... 150C AGND1 4 17 BS1 Lead Temperature ....................................260C Storage Temperature ..............65 C to +150 C NC 5 16 NC (2) EN1 6 15 PGND2 Recommended Operating Conditions IN2 7 14 SW2 Supply Voltage V .......................... 9.5V to 24V DD REF2 8 13 VDD2 Operating Temperature T .........40C to +85 C A AGND2 9 12 BS2 (3) Thermal Resistance JA JC EN2 10 11 NC TSSOP20F ............................. 40....... 6.... C/W EXPOSED PAD Notes: (CONNECT TO PGND) 1) Exceeding these ratings may damage the device. 2) The device is not guaranteed to function outside of its Part Number* Package Temperature operating conditions. 3) Measured on approximately 1 square of 1 oz copper. MP7722DF TSSOP20F 40 C to +85C For Tape & Reel, add suffix Z (eg. MP7722DFZ) * For Lead Free, add suffix LF (eg. MP7722DFLFZ) ELECTRICAL CHARACTERISTICS V = 24V, V = 5V, T = +25 C, unless otherwise noted. DD EN A Parameters Symbol Condition Min Typ Max Units Supply Current Standby Current V = 0V 2 10 A EN Quiescent Current 3 6 mA Output Drivers SW On Resistance Sourcing and Sinking 0.18 Short Circuit Current Sourcing and Sinking 5.0 A Inputs REF1/2, IN1/2 Input Common V DD 0 V 1.5 V DD Mode Voltage Range 2 REF1/2, IN1/2 Input Current V = V = 12V 1 5 A PIN NIN V Rising 1.4 2.0 V EN EN Enable Threshold Voltage V Falling 0.4 1.2 V EN EN Enable Input Current V = 5V 1 A EN Thermal Shutdown Thermal Shutdown Trip Point T Rising 150 C J Thermal Shutdown Hysteresis 30 C Standby Current V = 0V 260 A EN Quiescent Current 23 mA MP7722 Rev. 1.5 www.MonolithicPower.com 2 1/22/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. 2010 MPS. All Rights Reserved.