MP6903 Fast Turn-off Intelligent Controller The Future of Analog IC Technology DESCRIPTION FEATURES The MP6903 is a low-drop diode emulator that, Works with Standard and Logic-Level FETS combined with an external switch, replaces Compatible with Energy Star, 1W Standby Schottky diodes in high-efficiency LLC Requirements converters. The chip regulates the forward drop V Range from 8V to 24V DD (1) of an external switch to about 70mV and 70mV V Regulation Function DS switches it off as soon as the voltage goes Fast Turn-Off: Total Delay of 20ns negative. MP6903 has a light-load sleep mode Max 400kHz Switching Frequency that reduces the quiescent current to < 300A. (1) Light Load Mode Function with <300A Quiescent Current Supports DCM, CCM and CrCM Operation Supports High-Side and Low-Side Rectification Power Savings of Up to 1.5W for a Typical Notebook Adapter APPLICATIONS Industrial Power Systems Distributed Power Systems Battery Powered Systems LLC Converters 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. Notes: 1) Related issued patent: US Patent US8,067,973 US8,400,790. CN Patent ZL201010504140.4 ZL200910059751.X. Other patents pending. TYPICAL APPLICATION Qa Q2 C L s s C in Output Q b C4 L m VG1 GND R1 Q1 1k MP6903 VG1 1 8 PGND V G 2 7 EN NC C1 1nF 3 6 LL V DD C2 100k 1uF R2 4 5 V D VSS U1 MP6903 Rev. 1.07 www.MonolithicPower.com 1 6/7/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2016 MPS. All Rights Reserved. MP6903- FAST TURN-OFF INTELLIGENT CONTROLLER ORDERING INFORMATION Part Number* Package Top Marking SOIC8 MP6903DS MP6903 * For Tape & Reel, add suffix Z (e.g. MP6903DSZ) For RoHS Compliant Packaging, add suffix LF (e.g. MP6903DSLFZ) PACKAGE REFERENCE TOP VIEW PGND 1 8 V G EN 2 7 NC LL 3 6 V DD V 4 5 V D SS (2) (5) ABSOLUTE MAXIMUM RATINGS Thermal Resistance JA JC V to V ...................................... -0.3V to +27V DD SS SOIC8 ..................................... 90 ...... 45 ... C/W PGND to V ................................ -0.3V to +0.3V SS Notes: V to V ......................................... -0.3V to V G SS DD 2) Exceeding these ratings may damage the device. V to V ..................................... -0.7V to +180V D SS 3) The maximum allowable power dissipation is a function of the LL, EN to V ............................... -0.3V to +6.5V SS maximum junction temperature T(MAX), the junction-to- J ambient thermal resistance , and the ambient temperature JA Maximum Operating Frequency ............. 400kHz (3) T . The maximum allowable continuous power dissipation at A Continuous Power Dissipation (T =25C) A (MAX)=(T (MAX)- any ambient temperature is calculated by P D J ............................................................. 1.4W T )/ . Exceeding the maximum allowable power dissipation A JA will cause excessive die temperature, and the regulator will go Junction Temperature ............................... 150C into thermal shutdown. Internal thermal shutdown circuitry Lead Temperature (Solder)....................... 260C protects the device from permanent damage. 4) The device is not guaranteed to function outside of its Storage Temperature .............. -55C to +150C operating conditions. 5) Measured on JESD51-7, 4-layer PCB. (4) Recommended Operation Conditions V to V ............................................ 8V to 24V DD SS Operating Junction Temp. (T ).. -40C to +125C J MP6903 Rev. 1.07 www.MonolithicPower.com 2 6/7/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2016 MPS. All Rights Reserved.