LT8312 Boost Controller with Power Factor Correction Fea T Descrip T n PFC Boost with Minimum Number of External Com- The LT 8312 is a power factor correction (PFC) boost ponents controller. A LT8312-based design can achieve a power n factor of greater than 0.99 by actively modulating the input V and V Limited Only by External Components IN OUT n current, allowing compliance with most Harmonic Current Active Power Factor Correction n Emission requirements. Low Harmonic Distortion n Overvoltage Protection The LT8312 is well suited for a wide variety of off-line n Energy Star Compliant (<0.5W No-Load Operation) applications. The input range can be scaled up or down, n 16-Lead MSOP Package depending mainly on the choice of external components. Efficiencies higher than 95% can be achieved with output power levels up to 250W. a T L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear n Industrial Technology Corporation. All other trademarks are the property of their respective owners. n Aviation Typical a T Universal Input 200W PFC Boost Converter B1 D4 GBU404 CMR5H-06 V OUT 4:1 400V D2 20 0.5A 560F 90V 0.1F 499k 100k 2 TO 265V 10F 4.7pF AC Efficiency 499k 100k 2k D3 99 1M 98 1M V DCM IN 97 115VAC 1M V FB IN SENSE 96 EN/UVLO 9.53k 95 95.3k LT8312 230VAC 50Hz 20 94 GATE V SENSE 93 REF INTV CC 100k 92 4.7F 0.01 GND OVP V C 91 0 40 60 80 100 120 140 160 221k 20 2.2F POWER (W) 8312 G01 8312 TA01a 8312f 1 For more information www.linear.com/LT8312 EFFICIENCY (%) ion pplica ions pplica ion uresLT8312 a Te Maxi Mu M r a T p c F T (Note 1) EN/UVLO ...................................................................30V TOP VIEW V ............................................................................42V IN V GND 1 16 IN SENSE 2 15 GND SENSE INTV ......................................................................18V CC GND 3 14 GATE 4 13 FB ...............................................................................3V V INTV REF CC OVP 5 12 EN/UVLO V ...............................................................................5V 6 11 V V C C IN GND 7 10 DCM V ................................................................1mA 8 9 IN(SENSE) GND FB OVP .............................................................................4V MS PACKAGE 16-LEAD PLASTIC MSOP SENSE ......................................................................0.4V = 125C/W JA DCM .......................................................................3mA Operating Temperature Range (Note 2) ....40C to 125C Storage Temperature Range .................. 65C to 150C o r D i n F Ma T LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LT8312EMS PBF LT8312EMS TRPBF 8312 16-Lead Plastic MSOP 40C to 125C LT8312IMS PBF LT8312IMS TRPBF 8312 16-Lead Plastic MSOP 40C to 125C LT8312HMS PBF LT8312HMS TRPBF 8312 16-Lead Plastic MSOP 40C to 150C LT8312MPMS PBF LT8312MPMS TRPBF 8312 16-Lead Plastic MSOP 55C to 150C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Consult LTC Marketing for information on nonstandard lead based finish parts. For more information on lead free part marking, go to: