MPQ4558-AEC1 1A, 2MHz, 55V Step-Down Converter AEC-Q100 Qualified DESCRIPTION FEATURES The MPQ4558 is a high-frequency, step-down Guaranteed Industrial/Automotive switching regulator with an integrated internal Temperature Range Limits high-side high-voltage power MOSFET. It Wide 3.8V-to-55V Operating Input Range provides up to a 1A output with current-mode 250m Internal Power MOSFET control for fast loop response and easy Up to 2MHz Programmable Switching compensation. Frequency 140A Quiescent Current The wide 3.8V-to-55V input range accommodates Stable with Ceramic Capacitors a variety of step-down applications, including automotive input. A 12A shutdown-mode supply Internal Soft-Start current makes it suitable for battery-powered Up to 95% Efficiency applications. Output Adjustable from 0.8V to 52V Available in SOIC8E and 3mm x 3mm A scaled-down switching frequency in light-load QFN10 Packages conditions provides high power-conversion Available in AEC-Q100 Grade 1 efficiency over a wide load range while reducing switching and gate driver losses. APPLICATIONS The frequency fold-back prevents inductor current High-Voltage Power Conversion runaway during startup and thermal shutdown Automotive Systems provides reliable, fault-tolerant operation. Industrial Power Systems Distributed Power Systems By switching at 2MHz, the MPQ4558 can prevent EMI (electromagnetic interference) noise Battery Powered Systems problems, such as those found in AM radio and All MPS parts are lead-free and adhere to the RoHS directive. For MPS green ADSL applications. status, please visit MPS website under Products, Quality Assurance page. MPS and The Future of Analog IC Technology are Registered Trademarks of The MPQ4558 is available in an SOIC8E and a Monolithic Power Systems, Inc. 10-pin 3mm x 3mm QFN package. TYPICAL APPLICATION MPQ4558 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. MPQ4558 1A, 2MHz, 55V STEP-DOWN CONVERTER, AEC-Q100 QUALIFIED ORDERING INFORMATION Part Number Package Top Marking Junction Temperature (T ) J MPQ4558DN* SOIC8E MP4558DN MPQ4558DQ** QFN10 (3 x 3mm) ABP -40C to +125C MPQ4558DQ-AEC1*** QFN10 (3 x 3mm) ABP * For Tape & Reel, add suffix Z (e.g. MPQ4558DNZ) For RoHS Compliant Packaging, add suffix LF, (e.g. MPQ4558DNLFZ) ** For Tape & Reel, add suffix Z (e.g. MPQ4558DQZ) For RoHS Compliant Packaging, add suffix LF, (e.g. MPQ4558DQLFZ) ***Available End Sept. 2011 PACKAGE REFERENCE SOIC8E QFN10 (3mm x 3mm) (4) (1) Thermal Resistance ABSOLUTE MAXIMUM RATINGS JA JC SOIC8E .................................. 50 ...... 10 ... C/W Supply Voltage (V ) .................... 0.3V to +60V IN QFN10(3mm x 3mm) .............. 50 ...... 12 ... C/W Switch Voltage (V ) ......... 0.5V to (V + 0.5V) SW IN BST to SW .................................... 0.3V to +5V Notes: All Other Pins ................................ 0.3V to +5V 1) Exceeding these ratings may damage the device (2) 2) The maximum allowable power dissipation is a function of the Continuous Power Dissipation (T = +25C) J maximum junction temperature T (MAX), the junction-to- J SOIC8E.2.5W ambient thermal resistance , and the ambient temperature JA QFN10. 2.5W TA. The maximum allowable continuous power dissipation at 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 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 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 Maximum Junction Temp. (T ) ............... 125C J MPQ4558 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.