Datenblatt-Suchmaschine für elektronische Bauteile |
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ACT4921QI Datenblatt(PDF) 19 Page - Active-Semi, Inc |
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ACT4921QI Datenblatt(HTML) 19 Page - Active-Semi, Inc |
19 / 35 page ACT4921QI Rev 1.0, 18-Jan-2018 Innovative PowerTM www.active-semi.com ActiveSwitcherTM is a trademark of Active-Semi Copyright © 2018 Active-Semi, Inc. 19 Table 3: IC Functionality vs Operating Conditions. Operation Conditions eFuse Blocking FET Boost Buck PLI PG_VO PG_STR nIRQ IC Action Normal Operation On On Enabled Off High High High High Boost Charges STR Cap as needed Input OC Vin - Vout < 560mV On On Enabled Off High High High Low eFuse in LDO Mode Input OC Vin - Vout > 560mV On → Off Off Off On Low Low High → Low Low Enter Supplement Mode VBUS Short On → Off On Off On Low Low High → Low Low Enter Supplement Mode Input Over Voltage On → Off On Off On Low High High → Low Low Enter Supplement Mode Input Under Voltage On → Off On Off On Low High High → Low Low Enter Supplement Mode EN Pin Low (@ Start up) Off Off Off Off Low Low Low Low IC is disabled EN Pin Low (@ Normal Operation) On → Off Off Off On Low Low High → Low Low Enter supplement mode first, then IC is disabled ENB Pin Low On Off Off Off No Effect No Effect Depends on Vstr Low Disables Boost & Buck, turns off Blocking FET Health Checking On On Off Off High High High High If failed, PS_STR and nIRQ go low 120°C < Tj < 145 °C On On Enabled Off High High High Low Sends out thermal alert 145 °C < Tj < 155 °C On On Off Off High High Depends on Vstr Low PG_STG depends on Vstr Tj > 155 °C Off Off Off Off Low Low Low Low IC is disabled |
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