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SC418ULTRT Datasheet(PDF) 4 Page - Semtech Corporation |
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SC418ULTRT Datasheet(HTML) 4 Page - Semtech Corporation |
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4 / 30 page  SC418 4 Electrical Characteristics (continued) Parameter Conditions Min Typ Max Units Input Supplies (continued) VDDA + VDDP Supply Current ENL , EN = 0V 3 7 μA EN = 5V, R PSV = 115kΩ, VFB > 500mV (2) 1.5 mA EN = 5V, PSV = open (float), V FB > 500mV (2) 0.4 Operating f SW = 250kHz, PSV = VDDA, no load (2) 10 FB Comparator Threshold Static VIN and load, 0 to +85 °C 0.496 0.500 0.504 V Static VIN and load, -40 to +85 °C 0.495 0.505 V Frequency Range Continuous mode operation 1000 kHz Timing On-Time Forced continuous mode operation, V IN = 15V, VOUT = 5V, RTON = 300kΩ, VDDA = 5V 2385 2650 2915 ns VDDA < 4.5V (3) Minimum On-Time (2) 80 ns Minimum Off-Time(2) 250 ns Ultrasonic Frequency(2) Minimum switching frequency, R PSV = 115kΩ 25 kHz Soft-Start Soft-Start Ramp Time(2) V OUT ramp from zero to programmed value 850 μs Analog Inputs/Outputs VOUT Input Resistance 500 kΩ Current Sense Zero Cross Detector Threshold LX - PGND, VDDA = 5V -3 0 +3 mV VDDA = 3.3V(4) n/a n/a n/a Power Good Power Good Threshold Upper limit, V FB > internal 500mV reference +20 % Lower limit, V FB < internal 500mV reference -10 % Start-Up Delay Time Includes Soft-Start Ramp Time, VDDA = 5V, 2 ms Includes Soft-Start Ramp Time, VDDA = 3.3V (2) 1 Fault (noise immunity) Delay Time(2) 5 µs Leakage PGOOD = high impedance (open) 1 µA |
Similar Part No. - SC418ULTRT |
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Similar Description - SC418ULTRT |
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