Datasheet LT3574 (Analog Devices) - 2

LT3574 absolute MaxiMuM ratings pin conFiguration SW ..60V V TOP VIEW IN, SHDN/UVLO, RFB, BIAS ...40V GND 1 16 GND SS, VC, TC, RREF, RILIM ...5V TEST 2 15 TC GND 3 14 R Maximum Junction Temperature .. 125°C REF SW 4 13 RFB V 5 Operating Junction Temperature Range IN 12 VC BIAS 6 11 RILIM (Note 2) ..–40°C to 125°C SHDN/UVLO 7 10 SS GND 8 9 GND Storage Temperature Range ..–65°C to 150°C MS PACKAGE 16-LEAD PLASTIC MSOP TJMAX = 125°C, θJA = 120°C/W, θJC = 21°C/W orDer inForMation
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3574EMS#PBF LT3574EMS#TRPBF 3574 16-Lead Plastic MSOP –40°C to 125°C LT3574IMS#PBF LT3574IMS#TRPBF 3574 16-Lead Plastic MSOP –40°C to 125°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/ e lectrical characteristics
The
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denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 12V, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
Input Voltage Range l 3 40 V Quiescent Current SS = 0V 3.5 mA VSHDN/UVLO = 0V 0 1 µA Soft-Start Current SS = 0.4V 7 µA SHDN/UVLO Pin Threshold UVLO Pin Voltage Rising l 1.15 1.22 1.29 V SHDN/UVLO Pin Hysteresis Current VUVLO = 1V 2 2.5 3 µA Soft-Start Threshold 0.7 V Maximum Switching Frequency 1000 kHz Switch Current Limit RILIM = 10k 0.65 0.9 1.1 A Minimum Current Limit VC = 0V 100 mA Switch VCESAT ISW = 0.5A 150 250 mV RREF Voltage VIN = 3V 1.21 1.23 1.25 V l 1.20 1.25 RREF Voltage Line Regulation 3V < VIN < 40V 0.01 0.03 %/ V RREF Pin Bias Current (Note 3) l 100 600 nA IREF Reference Current Measured at RFB Pin with RREF = 6.49k 190 µA Error Amplifier Voltage Gain VIN = 3V 150 V/V 3574f 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 Typical Application Related Parts