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IR3846M Datasheet(PDF) 9 Page - International Rectifier |
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IR3846M Datasheet(HTML) 9 Page - International Rectifier |
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9 / 54 page  IR3846 9 www.irf.com © 2015 International Rectifier Submit Datasheet Feedback June 18, 2015 PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNIT Switch Node SW Leakage Current lsw SW = 0V, Enable = 0V 1 µA SW = 0V, Enable = HIGH, Vp=0 V Internal Regulator (VCC/LDO) Output Voltage VCC Vin(min) = 7.2V, Io=0- 30mA, Cload = 2.2uF, DCM=0 6.3 6.8 7.1 V Vin(min) = 7.2V, Io=0- 30mA, Cload = 2.2uF, DCM=1 4 4.4 4.8 VCC dropout VCC_drop Vin = 7V, Io=70 mA, Cload = 2.2uF 0.7 V Short Circuit Current Ishort Note 4 70 mA Zero-crossing Comparator Delay Tdly_zc 256 / Fs s Zero-crossing Comparator Offset Vos_zc Note 4 0 mV Body Braking BB Threshold BB_threshold Fb > Vref, Sw duty cycle, Note 3 0 % FAULTS Power Good Power Good Low Upper Threshold VPG_low(upper) Vsns Rising, 0.4V < Vref < 1.2V 115 120 125 % Vref Vsns Rising, Vref < 0.1V 115 120 125 % Vp Power Good Low Upper Threshold Falling delay VPG_low(upper)_Dly Vsns > VPG_low(upper) 1.5 2.5 3.5 µs Power Good High Lower Threshold VPG_high(lower) Vsns Rising, 0.4V < Vref < 1.2V 95 % Vref Vsns Rising, Vref < 0.1V 95 % Vp Power Good High Lower Threshold Rising Delay VPG_high(lower)_Dly Vsns rising 1.28 ms Power Good Low Lower Threshold VPG_low(lower) Vsns falling, 0.4V < Vref < 1.2V 90 % Vref Vsns falling, 0.1V < Vref 90 %Vp Power Good Low Lower Threshold Falling delay VPG_low(lower)_Dly Vsns < VPG_low(lower) 101 150 199 µs PGood Voltage Low PG (voltage) IPGood = -5mA 0.5 V |
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