LT3512 absoluTe MaxiMuM raTingspin conFiguraTion(Note 1) SW (Note 4) ..150V TOP VIEW VIN, EN/UVLO, RFB ..100V EN/UVLO 1 16 SW VIN to RFB ..±6V V 3 IN 14 RFB BIAS ..Lesser of 20V or VIN GND 5 12 RREF R BIAS 6 11 TC REF,TC, VC ...6V NC 7 10 VC Operating Junction Temperature Range (Note 2) GND 8 9 GND LT3512E, LT3512I .. –40°C to 125°C MS PACKAGE 16(12)-LEAD PLASTIC MSOP LT3512H .. –40°C to 150°C θJA = 90°C/W LT3512MP .. –55°C to 150°C Storage Temperature Range .. –65°C to 150°C orDer inForMaTion LEAD FREE FINISHTAPE AND REELPART MARKING*PACKAGE DESCRIPTIONTEMPERATURE RANGE LT3512EMS#PBF LT3512EMS#TRPBF 3512 16-Lead Plastic MSOP –40°C to 125°C LT3512IMS#PBF LT3512IMS#TRPBF 3512 16-Lead Plastic MSOP –40°C to 125°C LT3512HMS#PBF LT3512HMS#TRPBF 3512 16-Lead Plastic MSOP –40°C to 150°C LT3512MPMS#PBF LT3512MPMS#TRPBF 3512 16-Lead Plastic MSOP –55°C to 150°C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/ elecTrical characTerisTicsThe l denotes the specifications which apply over the full operatingtemperature range, otherwise specifications are at TA = 25°C. VIN = 24V unless otherwise noted.PARAMETERCONDITIONSMINTYPMAXUNITS Input Voltage Range l 6 100 V VIN = BIAS 4.5 15 V Quiescent Current Not Switching 3.5 4.5 mA VEN/UVLO = 0.2V 0 μA EN/UVLO Pin Threshold EN/UVLO Pin Voltage Rising l 1.15 1.21 1.27 V EN/UVLO Pin Current VEN/UVLO =1.1V 2.0 2.6 3.3 μA VEN/UVLO =1.4V 0 μA Maximum Switching Frequency 650 kHz Minimum Switching Frequency 40 kHz Maximum Current Limit 420 600 800 mA Minimum Current Limit 80 120 150 mA Switch VCESAT ISW = 200mA 0.5 V RREF Voltage 1.18 1.20 1.215 V l 1.17 1.23 V RREF Voltage Line Regulation 6V < VIN < 100V 0.01 0.03 %/V RREF Pin Bias Current (Note 3) l 80 400 nA Error Amplifier Voltage Gain 150 V/V Error Amplifier Transconductance ∆I = 2µA 140 μmhos 3512fb 2 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts