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ACT4921QI Scheda tecnica(PDF) 8 Page - Active-Semi, Inc |
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ACT4921QI Scheda tecnica(HTML) 8 Page - Active-Semi, Inc |
8 / 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. 8 SYSTEM CHARACTERISTICS (VIN = 5V, TA = 25°C, unless otherwise specified) PARAMETER CONDITIONS MIN TYP MAX UNIT Input Supply Input Supply Voltage Range VIN 2.6 7 V Input Supply Over Voltage Lock Out (OVLO) 6 V Input Under Voltage Lock Out (UVLO) VIN Rising (Boost/eFuse Enabled) 2.55 2.6 V Input UVLO Hysteresis VIN Falling 50 mV Input Operation Current eFuse Enabled and Soft start completed Buck/Storage Regulator Disabled Storage Health Check Disabled 3 mA eFuse Enabled and Soft start completed Buck/Storage Regulator Disabled Storage Health Check Disabled 5.5 mA Input Current (Shutdown) VEN = 0V 20 µA Input Under Voltage Lock Out (UVLO) VIN Rising (Boost/eFuse Enabled) 2.55 2.6 V Input Current (Shutdown) VEN=0V 20 µA Thermal Thermal Warning Sets nIRQ 120 °C Thermal Shutdown – Disables buck and boost 145 °C Thermal Shutdown – Disables eFuse 155 °C Thermal Comparators Hysteresis 10 °C SET Thresholds BSET Reference Normal operation range, otherwise uses default Boost output regulation setting 0.32 1.2 V BSET Current Source BSET = 1.0V (25°C) 19.6 20 20.4 µA BSET Current Source Temperature Coefficient BSET = 1.0V (25°C – 125°C) 0.0145 %/°C STR Thresholds Input Under Voltage Lock Out (STR_UVLO) STR Falling 2.7 2.78 V Input Under Voltage Lock Out (STR_UVLO) STR Rising 3.08 V Open Drain Outputs Open Drain Resistance (nIRQ, PLI, PG_VO, PG_STR, SDA) Sinking Current 500µA 100 Ω VINS Thresholds Under Voltage Reference (VINS_UV_REF) UV REF after POR release 0.64 V |
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