MP9485 100V Input, 500mA, Step-Down Converter DESCRIPTION FEATURES The MP9485 is a high-voltage, step-down, Wide 4.5V to 100V Input Range switching regulator that delivers up to 0.5A of Hysteretic Control: No Compensation current to the load. It integrates a high-side, Up to 2MHz Switching Frequency high-voltage power MOSFET with a current limit PWM Dimming Control Input for LED of 1.0A, typically. The wide 4.5V to 100V input Application range accommodates a variety of step-down Short-Circuit Protection (SCP) with applications, making it ideal for automotive, Integrated High-Side MOSFET industry, and lighting applications. Hysteretic 170A Quiescent Current voltage-mode control is employed for very fast Thermal Shutdown response. MPSs proprietary feedback control Available in a SOIC-8 Package with an scheme minimizes the number of required Exposed Pad external components. APPLICATIONS The switching frequency can be up to 2MHz, allowing for small component size. Thermal E-Bike Control Power Supplies shutdown and short-circuit protection (SCP) Solar Energy Systems provide reliable and fault-tolerant operations. A Automotive System Power 170A quiescent current allows the MP9485 to Industrial Power Supplies be used in battery-powered applications. High-Power LED Drivers All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. The MP9485 is available in a SOIC-8 package For MPS green status, please visit the MPS website under Quality Assurance. with an exposed pad. MPS and The Future of Analog IC Technology are registered trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION Efficiency vs. Output Current V =5V, L=33H OUT C3 L1 100 Vin=36V 90 BST V OUT SW VIN VIN 80 Vin=60V C1 70 D1 C2 MP9485 R1 EN EN 60 50 DIM FB GND 40 R2 30 20 10 0 1 10 100 1000 Output Current(mA) MP9485 Rev. 1.11 www.MonolithicPower.com 1 10/10/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2019 MPS. All Rights Reserved. Efficiency(%)MP9485 100V INPUT, 500mA, STEP-DOWN CONVERTER ORDERING INFORMATION Part Number* Package Top Marking MP9485GN SOIC-8 EP See Below * For Tape & Reel, add suffix Z (e.g. MP9485GNZ) TOP MARKING MP9485: Product code of MP9485GN LLLLLLLL: Lot number MPS: MPS prefix Y: Year code WW: Week code PACKAGE REFERENCE TOP VIEW 8 GND FB 1 2 NC 7 EN VIN 3 6 DIM BST 4 5 SW SOIC-8 EP MP9485 Rev. 1.11 www.MonolithicPower.com 2 10/10/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2019 MPS. All Rights Reserved.