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MIC45208-2YMP Datasheet(PDF) 5 Page - Micrel Semiconductor |
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MIC45208-2YMP Datasheet(HTML) 5 Page - Micrel Semiconductor |
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5 / 35 page  Micrel, Inc. MIC45208 February 6, 2015 5 Revision 2.0 Electrical Characteristics (5) (Continued) VPIN = VIN = VEN = 12V, VOUT = 3.3V, VBST − VSW = 5V, TJ = +25ºC. Bold values indicate −40ºC < TJ < +125ºC, unless otherwise noted. Parameter Condition Min. Typ. Max. Units Oscillator Switching Frequency VFREQ = VIN, IOUT = 2A 400 600 750 kHz VFREQ = 50%VIN, IOUT = 2A 350 Maximum Duty Cycle 85 % Minimum Duty Cycle VFB = 1V 0 % Minimum Off-Time 140 200 260 ns Soft-Start Soft-Start Time 3 ms Short-Circuit Protection Current-Limit Threshold VFB = 0.79V −30 −14 0 mV Short-Circuit Threshold VFB = 0V −23 −7 9 mV Current-Limit Source Current VFB = 0.79V 50 70 90 µA Short-Circuit Source Current VFB = 0V 25 35 45 µA Leakage SW, BST Leakage Current 10 µA FREQ Leakage Current 10 µA Power Good (PG) PG Threshold Voltage Sweep VFB from Low-to-High 85 90 95 %VOUT PG Hysteresis Sweep VFB from High-to-Low 6 %VOUT PG Delay Time Sweep VFB from Low-to-High 100 µs PG Low Voltage VFB < 90% × VNOM, IPG = 1mA 70 200 mV Thermal Protection Overtemperature Shutdown TJ Rising 160 °C Overtemperature Shutdown Hysteresis 15 °C |
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