MPQ2560DQ-LF-P Monolithic Power Systems

MPQ2560 Industrial Grade 2.5A, 4MHz, 42V Step-Down Converter The Future of Analog IC Technology FEATURES DESCRIPTION Guaranteed Industrial Temp Range Limits The MPQ2560 is a high frequency step-down 120A Quiescent Current switching regulator with an integrated internal Wide 4.5V to 42V Operating Input Range high-side high voltage power MOSFET. It 220m Internal Power MOSFET provides 2.5A output with current mode control for Up to 4MHz Programmable Switching fast loop response and easy compensation. Frequency The wide 4.5V to 42V input range accommodates Stable with Ceramic Capacitor a variety of step-down applications, including Internal Soft-Start those in an automotive input environment. A 12A Internally Set Current Limit without external shutdown mode quiescent current allows use in Current Sensing Resistor battery-powered applications. Up to 93% Efficiency High power conversion efficiency over a wide Output Adjustable from 0.8V to 39V load range is achieved by scaling down the Available in 3x3 QFN10 and Thermally switching frequency at light load condition to Enhanced SOIC8 Packages reduce the switching and gate driving losses. APPLICATIONS The frequency foldback helps prevent inductor Industrial Power Systems current runaway during startup and thermal High Voltage Power Conversion shutdown provides reliable, fault tolerant Automotive Systems operation. Distributed Power Systems By switching at 4MHz, the MPQ2560 is able to Battery Powered Systems prevent EMI (Electromagnetic Interference) noise MPS and The Future of Analog IC Technology are Registered Trademarks of problems, such as those found in AM radio and Monolithic Power Systems, Inc. ADSL applications. The MPQ2560 is available in small 3mm x 3mm QFN10 and thermally enhanced SOIC8 packages. MPQ2560 Rev. 1.0 www.MonolithicPower.com 1 11/19/2009 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. 2009 MPS. All Rights Reserved. This datasheet has been downloaded from MPQ2560 INDUSTRIAL GRADE, 2.5A, 4MHz, 42V, STEP-DOWN CONVERTER TYPICAL APPLICATION Efficiency vs. Load Current 95 10 V =12V IN V =8V IN 90 8,9 BST 1,2 VOUT VIN SW VIN 3.3V 85 D1 80 V =24V IN V =36V IN 3 5 75 FB EN EN MPQ2560 70 65 7 4 FREQ COMP 60 V =3.3V OUT 55 GND fs=500kHz 6 50 0 0.5 1 1.5 2 2.5 LOAD CURRENT (A) EFFICIENCY (%)