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NCV4949A Datasheet(PDF) 3 Page - ON Semiconductor |
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NCV4949A Datasheet(HTML) 3 Page - ON Semiconductor |
3 / 11 page NCV4949A http://onsemi.com 3 ELECTRICAL CHARACTERISTICS (continued) (VCC = 14 V, −40°C < TA < 125°C, unless otherwise specified.) Characteristic Unit Max Typ Min Symbol Iout = 100 mA − 0.3 0.50 Input to Output Voltage Difference in Undervoltage Condition VIO − 0.2 0.4 V (VCC = 4.0 V, Iout = 35 mA) Line Regulation (6.0 V < VCC < 28 V, Iout = 1.0 mA) Regline − 1.0 20 mV Load Regulation (1.0 mA < Iout < 100 mA) Regload − 8.0 30 mV Current Limit ILim mA Vout = 4.5 V 105 200 400 Vout = 0 V − 100 − Quiescent Current (Iout = 0.3 mA, TA < 100°C) IQSE − 150 260 mA Quiescent Current (Iout = 100 mA) IQ − − 5.0 mA RESET Reset Threshold Voltage VResth − 4.5 − V Reset Threshold Hysteresis VResth,hys mV @ TA = 25°C 50 100 200 @ TA = −40 to +125°C 50 − 300 Reset Pulse Delay (CT = 100 nF, tR ≥ 100 ms) tResD 55 100 180 ms Reset Reaction Time (CT = 100 nF) tResR − 5.0 30 ms Reset Output Low Voltage (RReset = 10 kW to Vout, VCC ≥ 3.0 V) VResL − − 0.4 V Reset Output High Leakage Current (VReset = 5.0 V) IResH − − 1.0 mA Delay Comparator Threshold VCTth − 2.0 − V Delay Comparator Threshold Hysteresis VCTth, hys − 100 − mV SENSE Sense Low Threshold (VSI Decreasing = 1.5 V to 1.0 V) VSOth 1.16 1.23 1.35 V Sense Threshold Hysteresis VSOth,hys 20 100 200 mV Sense Output Low Voltage (VSI ≤ 1.16 V, VCC ≥ 3.0 V, RSO = 10 kW to Vout) VSOL − − 0.4 V Sense Output Leakage (VSO = 5.0 V, VSI ≥ 1.5 V) ISOH − − 1.0 mA Sense Input Current ISI −1.0 0.1 1.0 mA PREREGULATOR Preregulator Output Voltage (IZ = 10 mA) VZ − 6.3 − V PIN FUNCTION DESCRIPTION Pin SO−8, SO−8 EP Pin SO−20 W Symbol Description 1 19 VCC Supply Voltage 2 20 Si Input of Sense Comparator 3 1 VZ Output of Preregulator 4 2 CT Reset Delay Capacitor 5 4−7, 14−17 GND Ground 6 10 Reset Output of Reset Comparator 7 11 SO Output of Sense Comparator 8 12 Vout Main Regulator Output − 3, 8, 9, 13, 18 NC No Connect |
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