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LT3681 Datasheet(PDF) 3 Page - Linear Technology |
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LT3681 Datasheet(HTML) 3 Page - Linear Technology |
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3 / 24 page  LT3681 3 3681f PARAMETER CONDITIONS MIN TYP MAX UNITS Power Schottky Diode Forward Voltage IDA = 1A IDA = 2A 0.50 0.56 V V Power Schottky Diode Leakage Current VDC-DA = 40V 100 μA Switching Frequency RT = 8.66k RT = 29.4k RT = 187k 2.5 1.25 250 2.8 1.4 300 3.1 1.55 350 MHz MHz kHz Minimum Switch Off-Time ● 130 200 nS Switch Current Limit Duty Cycle = 5% 3.2 3.8 4.4 A Switch VCESAT ISW = 2A 360 mV Boost Schottky Reverse Leakage VSW = 10V, VBIAS = 0V 0.02 2 µA Minimum Boost Voltage (Note 4) ● 1.5 2.1 V BOOST Pin Current ISW = 1A 18 35 mA RUN/SS Pin Current VRUN/SS = 2.5V 5 10 μA RUN/SS Input Voltage High 2.5 V RUN/SS Input Voltage Low 0.2 V PG Threshold Offset from Feedback Voltage VFB Rising 122 mV PG Hysteresis 5 mV PG Leakage VPG = 5V 0.1 1 μA PG Sink Current VPG = 3V ● 100 600 μA 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 LT3681E is guaranteed to meet performance specifications from 0°C to 85°C. Specifications over the –40°C to 85°C operating temperature range are assured by design, characterization and correlation with statistical process controls. Note 3: Bias current flows into the FB pin. Note 4: This is the minimum voltage across the boost capacitor needed to guarantee full saturation of the switch. The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 10V, VRUNS/SS = 10V VBOOST = 15V, VBIAS = 3.3V unless otherwise noted. (Note 2) ELECTRICAL CHARACTERISTICS |
Similar Part No. - LT3681_15 |
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Similar Description - LT3681_15 |
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