MP4027 Primary-Side Control, Offline LED Controller with Active PFC, NTC and PWM Dimming The Future of Analog IC Technology DESCRIPTION FEATURES The MP4027 is a primary-side-control, offline Real-Current Control without Secondary- LED lighting controller. In a tiny TSOT23-8 Feedback Circuit package, it achieves high power factor (PF) and <2% Line/Load Regulation accurate LED current for isolated, single-power- NTC Thermal Current Fold-Back stage lighting applications. PWM Dimming Available High PF (0.9) over Universal Input Voltage This simplifies LED-lighting-system design Valley Switching Mode for Improved significantly by eliminating the secondary-side Efficiency feedback components and the optocoupler. Brown-Out Protection The MP4027 integrates power factor correction Over-Voltage Protection (PFC) and valley switching mode to reduce Short-Circuit Protection MOSFET switching losses. Over-Temperature Protection The MP4027 has NTC function and allows Primary-Side Over-Current Protection PWM dimming. Cycle-By-Cycle Current Limit VCC Under-Voltage Lockout Protection To enhance system reliability and safety, the Auto-Restart Function MP4027 has multiple internally integrated protection features, including over-voltage Available in TSOT23-8 Package protection (OVP), short-circuit protection (SCP), APPLICATIONS primary-side over-current protection (OCP), brown-out protection, over-temperature Solid-State Lighting protection (OTP), cycle-by-cycle current limit, Industrial and Commercial Lighting VCC under-voltage lockout (UVLO), and auto- Residential Lighting restart function. All MPS parts are lead-free and adhere to the RoHS directive. For MPS green status, please visit MPS website under Products, Quality Assurance page. MPS and The Future of Analog IC Technology are registered trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION CIRCUIT MULT MP4027 Rev. 1.02 www.MonolithicPower.com 1 12/9/2014 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2014 MPS. All Rights Reserved. MP4027 PRIMARY-SIDE CONTROL, OFFLINE LED CONTROLLER WITH ACTIVE PFC ORDERING INFORMATION Part Number Package Top Marking MP4027GJ* TSOT23-8 See Below * For Tape & Reel, add suffix Z (e.g. MP4027GJZ) TOP MARKING AHK: product code of MP4027GJ Y: year code. PACKAGE REFERENCE TOP VIEW 1 8 GATE VCC MULT 2 7 CS/ZCD NTC 3 6 FB 5 GND COMP 4 TSOT23-8 MP4027 Rev. 1.02 www.MonolithicPower.com 2 12/9/2014 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2014 MPS. All Rights Reserved.