MP7720 20W Class D Mono Single Ended Audio Amplifer The Future of Analog IC Technology DESCRIPTION FEATURES The MP7720 is a mono 20W Class D Audio 20W Output at V = 24V into a 4 load DD Amplifier. It is one of MPS second generation THD+N = 0.04% at 1W, 8 of 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 Startup / Shutdown pop elimination Integrated Startup and Shutdown Pop Short circuit protection circuits Elimination Circuit Mute / Standby Thermal Protection Integrated 180m Switches The MP7720 utilizes a single ended output Mute/Standby Modes (Sleep) structure capable of delivering 20W into 4 Available in Tiny 8-Pin SOIC and PDIP Packages speakers. MPS Class D Audio Amplifiers exhibit the high fidelity of a Class A/B amplifier at APPLICATIONS efficiencies greater than 90%. The circuit is Surround Sound DVD Systems based on the MPS proprietary variable Televisions frequency topology that delivers excellent Flat Panel Monitors PSRR, fast response time and operates on a Multimedia Computers single power supply. Home Stereo Systems EVALUATION BOARD REFERENCE MPS and The Future of Analog IC Technology are Registered Trademarks of Monolithic Power Systems, Inc. Board Number Dimensions AAM (Analog Adaptive Modulation) is a Trademark of Monolithic Power EV0030 2.4X x 3.5Y x 1.2Z Systems, Inc. TYPICAL APPLICATION V DD 4 6 OFF ON EN VDD THD+N vs Power (24V, 1KHz) 1 8 20 PIN PGND 10 MP7720 2 5 NIN BS 3 7 1 AGND SW 0.1 AUDIO INPUT + 0.01 0.1 1 10 30 POWER (W) MP7720 Rev. 2.1 www.MonolithicPower.com 1 1/22/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. 2010 MPS. All Rights Reserved. THD+N (%)MP7720 20W CLASS D MONO SINGLE ENDED AUDIO AMPLIFIER (1) PACKAGE REFERENCE ABSOLUTE MAXIMUM RATINGS Supply Voltage V ...................................... 26V DD BS Voltage.................. V 0.3V to V + 6.5V SW SW Enable Voltage V ........................0.3V to +6V EN V , V , V ........................... 1V to V + 1V TOP VIEW SW PIN NIN DD AGND to PGND..........................0.3V to +0.3V Junction Temperature............................... 150C PIN 1 8 PGND Lead Temperature ....................................260C NIN 2 7 SW Storage Temperature ..............65 C to +150 C AGND 3 6 VDD (2) EN 4 5 BS Recommended Operating Conditions Supply Voltage V .......................... 9.5V to 24V DD Operating Temperature T .........40C to +85 C A (3) Thermal Resistance JA JC SOIC8.................................... 105..... 40... C/W Part Number* Package Temperature PDIP8 ..................................... 95...... 55... C/W MP7720DS SOIC8 40 C to +85C MP7720DP PDIP8 40 C to +85C Notes: 1) Exceeding these ratings may damage the device. For Tape & Reel, add suffix Z (eg. MP7720DSZ) * 2) The device is not guaranteed to function outside of its For Lead Free, add suffix LF (eg. MP7720DSLFZ) operating conditions. 3) Measured on approximately 1 square of 1 oz copper. 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 1 5 A EN Quiescent Current 1.5 3.0 mA Output Drivers SW On Resistance Sourcing and Sinking 0.18 Short Circuit Current Sourcing and Sinking 5.0 A Inputs PIN, NIN Input Common Mode V DD 0 V 1.5 V DD Voltage Range 2 PIN, NIN 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 MP7720 Rev. 2.1 www.MonolithicPower.com 2 1/22/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. 2010 MPS. All Rights Reserved.