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SC493ULTRT Datasheet(PDF) 4 Page - Semtech Corporation |
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SC493ULTRT Datasheet(HTML) 4 Page - Semtech Corporation |
4 / 28 page SC493 4 Electrical Characteristics (continued) Parameter Symbol Condition Min Typ Max Units Startup Initialization Time (2) t INIT Delay before the I2C bus and the Power-on delay ramp are enabled 1 ms Soft-Start Time Accuracy t SS -20 +20 % Power-on Delay Time Accuracy t DLY -20 +20 % Powersave Zero-Crossing Detector Threshold VT ZC V LX - PGND -3 0 +3 mV UPSV mode Frequency f UPSV UPSV enabled, UPSV1 = 1, UPSV0 = 1 20 25 30 kHz Power Good PGD Rising Threshold VT PGD_RISE FB with respect to set point, under voltage, and over voltage 90/120 % PGD Falling Threshold VT PGD_FALL FB with respect to set point, under voltage, and over voltage 80/110 % PGD Leakage ILEAK PGD Device operating, no fault, V PGD=VVDD(1) 1 µA PGD Output Low Voltage V PGD_LOW I PGD=3mA 0.4 V Fault Protection I LIM Source Current I LIM 9 10 11 μA I LIM Temperature Coefficient TC ILIM 3000 ppm I LIM Comparator Offset VOFF ILIM -10 0 +10 mV Output Under-Voltage Fault VT UV FB with respect to set point, 8 consecutive switching cycles 70 % Output Over-Voltage Fault VT OV FB with respect to set point rising/ falling 120 % Over-Voltage Fault Delay(2) t DLY_OV 5 μs Smart Power-save Protection Threshold(2) VT SMRTPSV FB with respect to set point rising 110 % Over-Temperature Shutdown T OT Rising T J 160 °C Over-Temperature Hysteresis T OT_HYS 10 °C Analog Inputs and Outputs V OUT Input Resistance R VOUT Controller enabled 500k Ω Controller disabled/internal load enabled 10 |
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