MP171 700 V Non-Isolated Off-Line Regulator Up to 60 mA Output Current NOT RECOMMENDED FOR NEW DESIGNS. REFER TO MP171A DESCRIPTION FEATURES Primary-Side CV Control, Supporting Buck, MP171 is a primary-side regulator that provides Boost, Buck-Boost, and Flyback Topologies accurate constant voltage (CV) regulation Integrated 700 V MOSFET and Current without an opto-coupler. It supports buck, boost, Source buck-boost, and flyback topologies. It has an < 30 mW No-Load Power Consumption integrated 700 V MOSFET to simplify the structure and reduce cost. These features make Up to 2 W Output Power it an ideal regulator for offline low-power Maximum DCM Output Current Less than applications, such as home appliances and 40 mA standby power. Maximum CCM Output Current Less than 60 mA MP171 is a green-mode-operation regulator. Low VCC Operating Current Both the peak current and switching frequency Frequency Foldback decrease as the load decreases. This feature Limited Maximum Frequency provides excellent efficiency at light load and Peak Current Compression improves the overall average efficiency. Internally Biased VCC MP171 has various protection features TSD, UVLO, OLP, SCP, Open-Loop including thermal shutdown (TSD), VCC under- Protection voltage lockout (UVLO), overload protection (OLP), short-circuit protection (SCP), and open- APPLICATIONS loop protection. Home Appliances, White Goods, and MP171 is available in a small TSOT23-5 Consumer Electronics package and SOIC-8 package. Industrial Controls Standby Power All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. For MPS green status, please visit the MPS website under Quality Assurance. MPS and The Future of Analog IC Technology are registered trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION D2 DRAIN VCC L C2 R1 FB C3 MP171 R2 L1 SOURCE SOURCE VOUT Input C1 D1 C4 N GND MP171 Rev. 1.01 www.MonolithicPower.com 1 9/21/2018 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2021 MPS. All Rights Reserved. NOT RECOMMENDED FOR NEW DESIGNS REFER TO MP171AMP171 NON-ISOLATED OFFLINE REGULATOR NOT RECOMMENDED FOR NEW DESIGNS. REFER TO MP171A ORDERING INFORMATION Part Number Package Top Marking MP171GJ* TSOT23-5 See Below MP171GS** SOIC-8 See Below * For Tape & Reel, add suffix Z (e.g. MP171GJZ). ** For Tape & Reel, add suffix Z (e.g. MP171GSZ). TOP MARKING(TSOT23-5) APL: product code of MP171GJ Y: year code TOP MARKING (SOIC-8) MP171: part number LLLLLLLL: lot number MPS: MPS prefix: Y: year code WW: week code: PACKAGE REFERENCE TOP VIEW TOP VIEW VCC 1 8 NC FB DRAIN 2 7 SOURCE 3 6 NC SOURCE 4 5 NC TSOT23-5 SOIC-8 MP171 Rev. 1.01 www.MonolithicPower.com 2 9/21/2018 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2021 MPS. All Rights Reserved. NOT RECOMMENDED FOR NEW DESIGNS REFER TO MP171A