MPQ4559-AEC1 Industrial Grade, 1.5A, 2MHz, 55V Step-Down Converter AEC-Q100 Qualified DESCRIPTION FEATURES The MPQ4559 is a high frequency step-down Guaranteed Industrial Temp Range Limits switching regulator with integrated internal high- Wide 3.8V to 55V Operating Input Range side high voltage power MOSFET. It provides 250m Internal Power MOSFET 1.5A output with current mode control for fast loop Up to 2MHz Programmable Switching response and easy compensation. Frequency 140A Quiescent Current The wide 3.8V to 55V input range accommodates Ceramic Capacitor Stable a variety of step-down applications, including Internal Soft-Start those in automotive input environment. A 12A shutdown mode supply current allows use in Up to 95% Efficiency battery-powered applications. Output Adjustable from 0.8V to 52V Available in QFN (3mm x 3mm) and High power conversion efficiency over a wide SOIC8E with Exposed Pad Packages load range is achieved by scaling down the AEC-Q100 Qualified switching frequency at light load condition to reduce the switching and gate driving losses. APPLICATIONS The frequency foldback helps prevent inductor High Voltage Power Conversion current runaway during startup and thermal Automotive Systems shutdown provides reliable, fault tolerant Industrial Power Systems operation. Distributed Power Systems By switching at 2MHz, the MPQ4559 is able to Battery Powered Systems prevent EMI (Electromagnetic Interference) noise All MPS parts are lead-free and adhere to the RoHS directive. For MPS green problems, such as those found in AM radio and status, please visit MPS website under Quality Assurance. MPS and The Future of Analog IC Technology are Registered Trademarks of Monolithic ADSL applications. Power Systems, Inc. The MPQ4559 is available in small 3mm x 3mm QFN10 and SOIC8 with exposed pad packages.. TYPICAL APPLICATION MPQ4559 Rev. 1.01 www.MonolithicPower.com 1 5/24/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2016 MPS. All Rights Reserved. MPQ4559 1.5A, 2MHz, 55V STEP-DOWN CONVERTER AEC-Q100 QUALIFIED ORDERING INFORMATION Part Number Package Top Marking MPQ4559DN* SOIC8E MP4559DN MPQ4559DQ** QFN10 (3X3mm) ADD MPQ4559DQ-AEC1 QFN10 (3X3mm) ADD * For Tape & Reel, add suffix Z (e.g. MPQ4559DNZ) For RoHS Compliant Packaging, add suffix LF (e.g. MPQ4559DNLFZ) * For Tape & Reel, add suffix Z (e.g. MPQ4559DQZ) For RoHS Compliant Packaging, add suffix LF (e.g. MPQ4559DQLFZ) PACKAGE REFERENCE QFN10 SOIC8 (Exposed Pad) (1) (4) ABSOLUTE MAXIMUM RATINGS Thermal Resistance JA JC Supply Voltage (V ) .................... 0.3V to +60V IN SOIC8 (Exposed Pad) ............ 50 ...... 10 ... C/W Switch Voltage (V ) ............ 0.5V to V + 0.5V SW IN QFN10 (3X3mm)5012 C/W BST to SW .................................... 0.3V to +5V Notes: All Other Pins ................................ 0.3V to +5V 1) Exceeding these ratings may damage the device (2) Continuous Power Dissipation (T = +25C) A 2) The maximum allowable power dissipation is a function of the maximum junction temperature T (MAX), the junction-to- SOIC8E.2.5W J ambient thermal resistance , and the ambient temperature JA QFN10 (3X3mm).2.5W TA. The maximum allowable continuous power dissipation at Junction Temperature .............................. 150C any ambient temperature is calculated by P (MAX)=(T (MAX)- D J T )/ . Exceeding the maximum allowable power dissipation A JA Lead Temperature ................................... 260C will cause excessive die temperature, and the regulator will go Storage Temperature .............. 65C to +150C into thermal shutdown. Internal thermal shutdown circuitry (3) protects the device from permanent damage. Recommended Operating Conditions 3) The device is not guaranteed to function outside of its Supply Voltage V .......................... 3.8V to 55V operating conditions. IN 4) Measured on JESD51-7 4-layer board. Output Voltage V ........................ 0.8V to 52V OUT Operating Junct. Temp (T ) ..... 40C to +125C J MPQ4559 Rev. 1.01 www.MonolithicPower.com 2 5/24/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2016 MPS. All Rights Reserved.