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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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LT8613 Datenblatt(PDF) 3 Page - Linear Technology |
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LT8613 Datenblatt(HTML) 3 Page - Linear Technology |
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3 / 26 page  LT8619/LT8619-5 3 8619f For more information www.linear.com/LT8619 The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VEN/UV = 2V unless otherwise noted (Notes 2, 3) ELECTRICAL CHARACTERISTICS PARAMETER CONDITIONS MIN TYP MAX UNITS Switching Loop VIN Minimum Input Voltage 3.0 V VIN Quiescent Current at No Load VIN = 12V, VEN/UV = 0V l 0.6 0.6 1.0 3.0 µA µA VIN = 12V, VOUT = 3.3V, RT = 66.5k, VEN/UV = 2V, VSYNC = 0V l 6 6 10 18 µA µA VIN = 12V, VOUT = 3.3V, RT = 66.5k, VEN/UV = 2V, Floats SYNC 10 µA VIN = 12V, VOUT = 3.3V, RT = 66.5k, VEN/UV = 2V, VSYNC = INTVCC 3 mA VIN Current in Regulation VIN = 12V, VOUT = 3.3V, RT = 66.5k, VEN/UV = 2V, VSYNC = 0V ILOAD = 100µA ILOAD = 1mA l l 38 320 65 400 µA µA BIAS Pin Current Consumption VIN = 12V, VBIAS = 3.3V, ILOAD = 0.5A, fOSC = 700kHz 2.2 mA Regulated Output Voltage LT8619-5, VIN = 12V, VSYNC = INTVCC, No Load l 4.975 4.925 5.0 5.0 5.025 5.075 V Feedback Voltage LT8619, VIN = 12V, VSYNC = INTVCC, No Load l 0.796 0.788 0.8 0.8 0.804 0.812 V V Feedback Voltage Line Regulation VIN = 4V to 50V, VSYNC = INTVCC l ±0.004 ±0.03 %/V Feedback Pin Input Current LT8619, VFB = 0.8V ±20 nA Minimum On-Time LT8619, ILOAD = 0.5A, VSYNC = INTVCC l 30 60 ns Minimum Off-Time 100 150 180 ns Top Switch Peak Current Limit l 1.5 1.75 2.0 A Bottom Switch Current Limit 1.8 A Bottom Switch Reverse Current Limit VSYNC = INTVCC 0.55 A Soft-Start Duration VIN = 12V, VOUT = 3.3V, No Load, COUT = 22µF 0.2 ms EN/UV to PG High Delay CINTVCC = 1µF, VOUT = 3.3V, No Load, COUT = 22µF 0.66 ms EN/UV to PG Low Delay 10 µs Oscillator and SYNC Operating Frequency RT = 162k l 260 300 340 kHz RT = 66.5k l 630 700 770 kHz RT = 20k l 1.9 2.0 2.1 MHz Synchronization Frequency fSYNC ≥ fOSC l 0.3 2.2 MHz SYNC Threshold Frequency Synchronization Burst Mode Operation Floats SYNC Pin, Pulse-Skipping Mode Forced Continuous Mode 0.35 1.6 1 0.6 1.2 2.0 0.95 2.4 V V V B SYNC Pin Current Built-In Sourcing Current, VSYNC = 0V Built-In Sinking Current, VSYNC = 3.3V –0.2 3.0 µA µA |
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