MPQ2451 Industrial/Automotive-Grade 36V, 2MHz, 0.6A Step-Down Converter AEC-Q100 Qualified The Future of Analog IC Technology FEATURES DESCRIPTION Guaranteed Industrial/Automotive Temp. The MPQ2451 is a high frequency, step-down, Range Limits switching regulator with an integrated high- 130A Operating Quiescent Current voltage high-side power MOSFET. It efficiently Wide 3.3V-to-36V Operating Input Range provides up to a 0.6A output with current-mode 500m Internal Power MOSFET control for fast loop response. 2MHz Fixed Switching Frequency The wide 3.3V-to-36V input range accommodates Internally Compensated a variety of automotive step-down applications, Stable with Ceramic Output Capacitors and the 3 A shutdown-mode quiescent current Internal Soft-Start allows use in battery-powered applications. Precision Current Limit Without Current The MPQ2451 achieves high power-conversion Sensing Resistor efficiency over a wide load range by scaling >90% Efficiency down the switching frequency under light-load Output Adjustable from 0.8V to 0.9V , IN condition to reduce the switching and gate Fixed 5V & 3.3V Output driving losses. 6-Lead SOT23, TSOT23 and QFN Packages Frequency fold-back prevents inductor current Available in AEC-Q100 Grade 1 runaway during start-up. Thermal shutdown APPLICATIONS provides reliable, fault-tolerant operation. High-Voltage Power Conversion The MPQ2451 is available in a cost-effective Automotive Systems SOT23-6L, TSOT23-6L and QFN-6L packages. Industrial Power Systems Distributed Power Systems Battery-Powered Systems All MPS parts are lead-free, halogen free, and adhere to the RoHS directive. For MPS green status, please visit MPS website under Quality Assurance. MPS and The Future of Analog IC Technology are Registered Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION Efficiency VOUT=5V 95 C4 VIN=8V L1 V OUT 100nF 5V/0.6A 90 6 1 BST SW VIN=24V 85 VIN=12V D1 MPQ2451 80 V IN 5 GND 75 VIN VIN=36V C1 70 65 4 3 FB EN Control 60 C3 33pF 55 50 0 0.1 0.2 0.3 0.4 0.5 0.6 OUTPUT CURRENT(A) MPQ2451 Rev 1.2 www.MonolithicPower.com 1 8/4/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2017 MPS. All Rights Reserved. EFFICIENCY (%)MPQ2451INDUSTRIAL-GRADE 36V, 2MHz, 0.6A, STEP-DOWN CONVERTER, AEC-Q100 QUALIFIED ORDERING INFORMATION Part Number Package Top Marking MPQ2451DT* SOT23-6L*** See Below MPQ2451DT-AEC1 MPQ2451DG** See Below QFN-6L MPQ2451DG-AEC1 MPQ2451DJ-AEC1 TSOT23-6L See Below * For Tape & Reel, add suffix Z (e.g. MPQ2451DTZ). For RoHS Compliant packaging, add suffix LF (e.g. MPQ2451DTLFZ) ** For Tape & Reel, add suffix -Z (e.g. MPQ2451DG-Z) For RoHS Compliant packaging, add suffix -LF (e.g. MPQ2451DG-LF-Z) *** SOT23-6L is not recommended for new designs Part Number Package Top Marking MPQ2451GT-5* See Below MPQ2451GT-5-AEC1 SOT23-6L*** MPQ2451GT-33** See Below MPQ2451GT-33-AEC1 MPQ2451GG-5 See Below MPQ2451GG-5-AEC1 QFN-6L MPQ2451GG-33 See Below MPQ2451GG-33-AEC1 * For Tape & Reel, add suffix Z (e.g. MPQ2451GT-5-Z) ** For Tape & Reel, add suffix -Z (e.g. MPQ2451GT-33-Z) *** SOT23-6L is not recommended for new designs TOP MARKING V7: product code of MPQ2451DT and MPQ2451DT-AEC1 Y: year code W: week code MPQ2451 Rev 1.2 www.MonolithicPower.com 2 8/4/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2017 MPS. All Rights Reserved.