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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ACT8828 датащи(PDF) 31 Page - Active-Semi, Inc |
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ACT8828 датащи(HTML) 31 Page - Active-Semi, Inc |
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31 / 49 page  STEP-UP DC/DC CONVERTER ACT8828 Rev 3, 24-Sep-09 Active-Semi Innovative Power TM - 31 - www.active-semi.com Copyright © 2009 Active-Semi, Inc. ActivePMU TM and ActivePathTM are trademarks of Active-Semi. I 2CTM is a trademark of Philips Electronics. ELECTRICAL CHARACTERISTICS (REG4) PARAMETER CONDITIONS MIN TYP MAX UNIT Input Voltage Range 2.9 6 V Input UVLO Threshold Voltage Rising 2.7 2.8 2.9 V Input UVLO Hysteresis Voltage Falling 100 mV Quiescent Supply Current Not Switching 75 150 µA Supply Current in Shutdown 0.1 1 µA FB4 Feedback Voltage 235 255 275 mV FB4 Input Current 50 nA Switching Frequency 1.35 1.6 1.85 MHz Maximum Duty Cycle 87 92 % Switch Current Limit Duty = 75% 800 mA Switch On-Resistance ISW4 = 100mA 0.45 Ω Switch Leakage Current VSW4 = 30V, VVSYS = 3.6V, ON4 = GA 10 µA Over Voltage Protection Threshold 28.5 V (VVSYS = 3.6V, TA = 25°C, unless otherwise specified.) |
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