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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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LFDW Fiches technique(PDF) 3 Page - Linear Technology |
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LFDW Fiches technique(HTML) 3 Page - Linear Technology |
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3 / 24 page  LT3682 3 3682f 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 the device reliability and lifetime. Note 2: Absolute Maximum Voltage at VIN and RUN/SS pins is 60V for nonrepetitive 1 second transients, and 36V for continuous operation. Note 3: The LT3682E 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 LT3682I is guaranteed over the full −40°C to 125°C operating junction temperature range. The l denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C, VIN = 10V, VRUN/SS = 10V, VBD = 3.3V unless otherwise noted. (Note 3) PARAMETER CONDITIONS MIN TYP MAX UNITS VC Source Current 50 μA VC Sink Current 50 μA VC Pin to Switch Current Gain 1.25 A/V VC Switching Threshold 0.5 0.6 0.7 V VC Clamp Voltage 2V Switching Frequency RRT = 8.06kΩ RRT = 29.4kΩ RRT = 158kΩ 1.98 0.9 225 2.2 1 250 2.42 1.1 275 MHz MHz kHz Minimum Switch Off-Time l 130 210 ns Switch Current Limit (Note 7) SYNC = 0V SYNC = 3.3V or Clocked 1.45 1.18 1.7 1.4 2 1.66 A A Switch VCESAT ISW = 1A 460 mV DA Pin Current to Stop OSC 1.25 1.6 1.95 A Switch Leakage Current VSW = 0V, VIN = 60V 0.01 1 μA Boost Schottky Diode Voltage Drop IBSD = 50mA 720 850 mV Boost Schottky Diode Reverse Leakage VSW = 10V, VBD = 0 0.1 1 μA Minimum Boost Voltage (Note 5) l 1.7 2.5 V BOOST Pin Current ISW = 0.5A 10.5 17.5 mA RUN/SS Pin Current VRUN/SS = 10V 12 20 μA RUN/SS Input Voltage High 2.5 V RUN/SS Input Voltage Low 0.2 V PG Leakage Current VPG = 5V 0.1 1 μA PG Sink Current VPG = 0.4V l 100 1000 μA PG Threshold as % of VFB Measured at FB pin. FB Pin Voltage Rising 88% 90% 92% V PG Threshold Hysteresis Measured at FB Pin 12 mV SYNC Threshold Voltage 300 550 800 mV SYNC Input Frequency 0.3 2.2 MHz Note 4: Bias current flows out of the FB pin. Note 5: This is the minimum voltage across the boost capacitor needed to guarantee full saturation of the switch. Note 6: This IC includes over-temperature protection that is intended to protect the device during momentary overload conditions. Junction temperature will exceed the maximum operating junction temperature when over-temperature protection is active. Continuous operation above the specified maximum operating junction temperature may impair device reliability. Note 7: Current limit guaranteed by design and/or correlation to static test. Slope compensation reduces current limit at higher duty cycles. |
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