MP4561DQ-LF-P

MP4561 1.5A, 2MHz, 55V Step-Down Converter The Future of Analog IC Technology DESCRIPTION FEATURES The MP4561 is a high frequency step-down Wide 3.8V to 55V Operating Input Range switching regulator with integrated internal high- 300m Internal Power MOSFET side high voltage power MOSFET. It provides Up to 2MHz Programmable Switching 1.5A output with current mode control for fast loop Frequency response and easy compensation. 140 A Quiescent Current Ceramic Capacitor Stable The wide 3.8V to 55V input range accommodates External Soft-Start a variety of step-down applications, including Up to 95% Efficiency those in automotive input environment. A 12A shutdown mode supply current allows use in Output Adjustable from 0.8V to 52V battery-powered applications. Available in 3x3mm 10-Pin QFN High power conversion efficiency over a wide APPLICATIONS load range is achieved by scaling down the High Voltage Power Conversion switching frequency at light load condition to Automotive Systems reduce the switching and gate driving losses. Industrial Power Systems The frequency foldback helps prevent inductor Distributed Power Systems current runaway during startup and thermal Battery Powered Systems shutdown provides reliable, fault tolerant All MPS parts are lead-free and adhere to the RoHS directive. For MPS green operation. status, please visit MPS website under Products, Quality Assurance page. MPS and The Future of Analog IC Technology are registered trademarks of By switching at 2MHz, the MP4561 is able to Monolithic Power Systems, Inc. prevent EMI (Electromagnetic Interference) noise problems, such as those found in AM radio and ADSL applications. The MP4561 is available in small 3mm x 3mm 10-pin QFN with exposed pad package. TYPICAL APPLICATION C4 100nF 100 10 L1 9 BST 1.2 V OUT V =12V SW IN V VIN IN 3.3V 90 C2 C1 D1 R5 6.3V 100V 80 3 5 EN FB EN MP4561 R1 70 R2 R6 8 SS V =55V IN 60 7 4 COMP FREQ C3 50 GND 470pF C5 R4 6 R3 10nF 40 0 0.5 1 1.5 I (A) OUT MP4561 Rev. 1.01 www.MonolithicPower.com 1 2/27/2014 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2014 MPS. All Rights Reserved. EFFICIENCY (%)MP4561 1.5A, 2MHz, 55V STEP-DOWN CONVERTER ORDERING INFORMATION Part Number* Package Top Marking MP4561DQ QFN10( 3x3mm) 9C * For Tape & Reel, add suffix Z (e.g. MP4561DQZ) For RoHS compliant packaging, add suffix LF (e.g. MP4561DQLFZ) PACKAGE REFERENCE TOP VIEW SW 1 10 BST SW 2 9 VIN EN 3 8 SS COMP 4 7 FREQ FB 5 6 GND EXPOSED PAD Connect to GND Plane (1) (4) ABSOLUTE MAXIMUM RATINGS Thermal Resistance JA JC Supply Voltage (V ).....................0.3V to +60V 3x3mm QFN10........................50 ...... 12... C/W IN Switch Voltage (V )............ 0.5V to V + 0.5V SW IN Notes: BST to SW .....................................0.3V to +5V 1) Exceeding these ratings may damage the device. All Other Pins.................................0.3V to +5V 2) The maximum allowable power dissipation is a function of the (2) maximum junction temperature T(MAX), the junction-to- J Continuous Power Dissipation (T = +25C) A ambient thermal resistance , and the ambient temperature JA .............................................................2.5W T . The maximum allowable continuous power dissipation at A any ambient temperature is calculated by P (MAX)=(T (MAX)- D J Junction Temperature...............................150C T )/ . Exceeding the maximum allowable power dissipation A JA Lead Temperature ....................................260C will cause excessive die temperature, and the regulator will go into thermal shutdown. Internal thermal shutdown circuitry Storage Temperature.............. 65C to +150C protects the device from permanent damage. (3) Recommended Operating Conditions 3) The device is not guaranteed to function outside of its operating conditions. Supply Voltage V ...........................3.8V to 55V IN 4) Measured on JESD51-7 4-layer board. Output Voltage V .........................0.8V to 52V OUT Operating Junct. Temp. (T ).... 40 C to +125 C J MP4561 Rev. 1.01 www.MonolithicPower.com 2 2/27/2014 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2014 MPS. All Rights Reserved.