TM MP8040 High Current Power Half Bridge TM The Future of Analog IC Technology DESCRIPTION FEATURES The MP8040 is a general purpose, high 9A Peak Current Output frequency half bridge power driver capable of 4.25A Continuous Current Output driving a 9A load. The device integrates both Up to 1.2MHz Switching Frequency top and bottom N-Channel MOSFET power Protected Integrated Power 100m Switches switches and is fully protected from both All Switches Current Limited sourcing and sinking current by a preset Integrated Under-Voltage Protection cycle-by-cycle current limit. It has a wide input Integrated Thermal Protection voltage range from 7.5V to 25V. 2.5A Standby Mode The MP8040 features a low-current shutdown True 2-Quadrant Operation mode, input under-voltage protection, thermal Sources and Sinks Current shutdown, and fault flag signal output. It Fault Indicator Output interfaces with standard logic signals and is APPLICATIONS available in a small 8-pin SOIC with exposed pad package. Class D Audio Driver o 25W/4/10% Output Power Single Ended EVALUATION BOARD REFERENCE o 70W/4 /10% Output Power Full Bridge Board Number Dimensions Full or Half Bridge DC-DC Switching Regulator EV0041 3.5X x 3.5Y x 1.2Z Motor Driver MPS and The Future of Analog IC Technology are Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION V SP 2 + SP 7 DRV 8 MP8040 FLT FAULT 6 5 SHDN BS ENABLE 47nF 1 3 PWM INPUT V PWM SW OUT SIGNAL GND 4 MP8040 TAC S01 MP8040 Rev. 1.61 www.MonolithicPower.com 1 2/10/2011 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. 2011 MPS. All Rights Reserved. TM MP8040 HIGH CURRENT POWER HALF BRIGDE (1) PACKAGE REFERENCE ABSOLUTE MAXIMUM RATINGS SP Supply Voltage (V ) .............................. 28V SP SW Pin Voltage .............................. 0.3V to V SP TOP VIEW SW to BS ....................................... 0.3V to +6V Voltage at All Other Pins ............... 0.3V to +6V PWM 1 8 FLT Storage Temperature .............. 55 C to +150 C SP 2 7 DRV (2) Recommended Operating Conditions SW 3 6 SHDN SP Supply Voltage (V ) .................. 7.5V to 24V SP GND 4 5 BS Peak Output Current ...................... 9A Maximum Operating Temperature ............. 40 C to +85 C MP8040 PD01-SOIC8N EXPOSED PAD ON BACKSIDE (3) Thermal Resistance CONNECT TO PIN 4 JA JC SOIC8N .................................. 50 ....... 8 .... C/W Part Number* Package Temperature Notes: 1) Exceeding these ratings may damage the device. SOIC8N 2) The device is not guaranteed to function outside of its MP8040DN 40 C to +85C (Exposed Pad) operating conditions. 3) Measured on approximately 1 square of 1 oz copper. For Tape & Reel, add suffix Z (eg. MP8040DNZ) * For Lead Free, add suffix LF (eg. MP8040DNLFZ) ELECTRICAL CHARACTERISTICS V = 12V, V = 0V, T = +25 C, unless otherwise noted. SP SHDN A Parameter Symbol Condition Min Typ Max Units SP Operating Current 1.5 2.5 mA SP Shutdown Current V = 2V 2.5 10 A SHDN SHDN, SP Threshold Low 1 V SHDN, SP Threshold High 2 V SHDN, SP Input Bias Current 1 A SW On Resistance V = 7.5V, High-Side and Low-Side 0.1 SP V = 5, (Sinking) 9 A (4) PWM SW Current Limit V = 0, (Sourcing) 9 A PWM SW Switching Frequency V = 0 to 2V, 50% Duty Cycle 1.2 MHz PWM (5) V = 7.5V, V = 2V, C 100nF, SP PWM SW SW Maximum Duty Cycle 99.5 % f = 3.3kHz SW SW Rise/Fall Time V = 0 to 5V 20 ns PWM PWM Pulse Width V = 0 to 2V, High or Low Pulse 200 ns PWM PWM to SW Delay Time Rising V = 0 to 5V 70 ns PWM PWM to SW Delay Time V = 5 to 0V 70 ns PWM Falling Thermal Shutdown T Rising, Hysteresis = 20C 160 (4) C J Temperature Notes: 4) Not production tested. 5) SW drives low for 1.5s every 300s to charge the BS to SW capacitor. MP8040 Rev. 1.61 www.MonolithicPower.com 2 2/10/2011 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. 2011 MPS. All Rights Reserved.