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SC414 Datasheet(PDF) 5 Page - Semtech Corporation |
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SC414 Datasheet(HTML) 5 Page - Semtech Corporation |
5 / 29 page SC414/SC424 5 Electrical Characteristics (continued) Parameter Conditions Min Typ Max Units Input Supplies (continued) V5V Supply Current ENL, EN/PSV = 0V , V5V = 5V 3 7 μA ENL, EN/PSV = 0V , V5V = 3V 2 SC414, EN/PSV = V5V, no load (f SW = 25kHz), V FB > 750mV(2) 1 mA SC424, EN/PSV = V5V, no load, V FB > 750mV(2) 0.4 V5V = 5V, f SW = 250kHz, EN/PSV = floating, no load(2) 4 V5V = 3V, f SW = 250kHz, EN/PSV = floating, no load(2) 2.5 FB Comparator Threshold Static V IN and load, 0 to +85 °C, V5V = 3V or 5V 0.744 0.750 0.756 V Static V IN and load, -40 to +85 °C, V5V = 3V or 5V 0.7425 0.7575 V Frequency Range Continuous mode operation 1000 kHz Minimum f SW , (SC414 only), EN/PSV = V5V, no load 25 Bootstrap Switch Resistance 10 Ω Timing On-Time Continuous mode operation, V IN = 15V, V OUT = 3V, R TON = 300kΩ 1350 1500 1650 ns V5V < 4.5V(3) Minimum On-Time (2) 80 ns Minimum Off-Time (2) V5V = 5V 320 ns V5V = 3V 390 Soft-Start Soft-Start Ramp Time (2) 1.7 ms Analog Inputs/Outputs VOUT Input Resistance 500 kΩ Current Sense Zero-Crossing Detector Threshold LX - PGND, V5V = 3V or 5V -3 0 +3 mV |
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