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IR3871MTRPBF Datasheet(PDF) 5 Page - International Rectifier |
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IR3871MTRPBF Datasheet(HTML) 5 Page - International Rectifier |
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5 / 21 page  5 IR3871MPBF Recommended Operating Conditions Electrical Specifications Unless otherwise specified, these specification apply over VIN = 12V, VCC = 5V, 0o C ≤ T J ≤ 125 oC. * PHASE pin must not exceed 30V. Symbol Definition Min Max Unit VIN Input Voltage 3 26* V VCC Supply Voltage 4.5 7.5 V OUT Output Voltage 0.5 12 I OUT Output Current 0 8 A Fs Switching Frequency N/A 1000 kHz T J Junction Temperature 0 125 oC PARAMETER NOTE TEST CONDITION MIN TYP MAX UNIT BIAS SUPPLIES VCC Turn-on Threshold 3.9 4.2 4.5 V VCC Turn-off Threshold 3.6 3.9 4.2 V VCC Threshold Hysteresis 150 mV VCC Operating Current R FF = 200K, EN = HIGH, Fs = 300kHz 7.1 mA VCC Shutdown Current EN = LOW 35 50 µA FF Shutdown Current EN = LOW 2 µA VIN Shutdown Current EN = LOW 1 µA INTERNAL LDO OUTPUT LDO Output Voltage Range C 3VCBP = 1µF 3.1 3.3 3.5 V Output Current 8 mA CONTROL LOOP Reference Accuracy, V REF V REF 0.495 0.5 0.505 V On-Time Accuracy R FF = 180K, TJ = 65 oC 280 300 320 ns Min Off Time 1 400 ns Soft-Start Current EN = HIGH 8 10 12 µA Zero Current Threshold 1 Measure at V PHASE -5 -2.4 0 mV FAULT PROTECTION ISET Pin Output Current 18 20 22 µA Under Voltage Threshold Falling V FB & Monitor PGOOD 0.37 0.4 0.43 V Under Voltage Hysteresis 1 Rising V FB 10 mV Over Voltage Threshold Rising V FB & Monitor PGOOD 0.58 0.62 0.66 V Over Voltage Hysteresis 1 Falling V FB 10 mV PGOOD Delay Threshold (V SS) 1 V |
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