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LT3504 Datasheet(PDF) 3 Page - Linear Technology |
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LT3504 Datasheet(HTML) 3 Page - Linear Technology |
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3 / 24 page  LT3504 3 3504fa For more information www.linear.com/LT3504 elecTrical characTerisTics Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: The LT3504EUF is guaranteed to meet performance specifications from 0°C to 125°C junction temperature. Specifications over the –40°C to 125°C operating junction temperature range are assured by design, characterization and correlation with statistical process controls. The LT3504IUF is guaranteed over the full –40°C to 125°C operating junction temperature range. The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 12V unless otherwise noted. Note 3: Current flows into pin. Note 4: Quiescent current (VIN) is measured at VEN/UVLO = 1V Note 5: Current flows out of pin. Note 6: Current limit is guaranteed by design and/or correlation to static test. Slope compensation reduces current limit at higher duty cycles. Note 7: This IC includes overtemperature protection that is intended to protect the device during momentary overload conditions. Junction temperature will exceed 125°C when overtemperature protection is active. Continuous operation above the specified maximum operating junction temperature may impair device reliability. SYMBOL CONDITIONS MIN TYP MAX UNITS RUN/SS Pin Source Current VRUN/SS = 0V 1.3 µA RUN/SS Pin Threshold for Switching VFB = 0V 50 100 mV Feedback Voltage l 790 784 800 800 810 816 mV mV FB Pin Current VFB = Measured VFB (Note 5) l 15 150 nA Reference Line Regulation VIN = 5V to 40V –0.015 %/V SKY Pin Current ISW = 1A 27 40 mA SKY Voltage above VIN Voltage VSKY – VIN 4.85 V Switching Frequency RT = 6.34k RT = 18.2k RT = 100k l l l 1.8 0.85 200 2.1 1 250 2.4 1.15 300 MHz MHz kHz Switching Phase RT = 18.2k 150 180 210 Deg SYNC Threshold Voltage 1.25 V SYNC Input Frequency 0.35 2.2 MHz Switch Current Limit (SW1,2,3,4) (Note 6) 1.45 1.75 2.1 A Switch VCESAT (SW1,2,3,4) ISW = 1A 400 mV Switch Leakage Current (SW1,2,3,4) 0.1 2 µA Catch Diode Current Limit (SW1,2,3,4) FB = 0V FB = 0.7V 0.75 1.0 1.15 1.45 1.33 1.67 A A Switch Current Limit (SW5) (Note 6) 220 320 mA Switch VCESAT (SW5) ISW = 200mA 230 mV Switch Leakage Current (SW5) 0.1 2 µA Boost Diode Current Limit (SW5) VIN = 5V 350 450 mA PG Threshold Offset VFB Rising 65 90 125 mV PG Hysteresis VFB Rising – VFB Falling 35 mV PG Voltage Output Low IPG = 250µA 180 300 mV PG Pin Leakage VPG = 2V 0.01 1 µA |
Similar Part No. - LT3504_15 |
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Similar Description - LT3504_15 |
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