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ELM94-SERIES Datasheet(PDF) 2 Page - ELM Technology Corporation |
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ELM94-SERIES Datasheet(HTML) 2 Page - ELM Technology Corporation |
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2 / 6 page  2 http://www.elm-tech.com Rev.1.0 6 - ELM94xxB CMOS PFM step-up DC/DC converter + ELM94xxB VOUT MA721 LX Vout Vin VSS 330 H � 22 F � P.F.M. Oscillator Vref Start-up + - VSS LX VOUT ■Standard circuit ■Block diagram L=330μH, D=MA721, C=22μF, Vss=0V, Top=25°C Parameter Symbol Condition Min. Typ. Max. Unit Input voltage Vin 10 V Starting voltage Vst RL=27kΩ 0.98 V Holding voltage Vhold Iout=1mA 0.7 V Current consumption Iss Iout=100μA, Vin=1.5V 3.5 7.0 μA Output voltage Vout Iout=1mA, Vin=1.5V 2.63 2.70 2.77 V Output current of LX pin Ilx Vout=2.6V, Vlx=0.4V 80 mA Leakage current of LX pin Ilxl Vout=Vlx=10V 1.0 μA Oscillating frequency Fosc Vout=2.6V 22 35 55 kHz Maximum duty ratio Duty Vout=2.6V, Switch"ON" 45 55 65 % Vout=2.7V(ELM9427B) Parameter Symbol Condition Min. Typ. Max. Unit Input voltage Vin 10 V Starting voltage Vst RL=30kΩ 0.98 V Holding voltage Vhold Iout=1mA 0.7 V Current consumption Iss Iout=100μA, Vin=1.5V 4.0 8.0 μA Output voltage Vout Iout=1mA, Vin=1.5V 2.92 3.00 3.08 V Output current of LX pin Ilx Vout=2.9V, Vlx=0.4V 90 mA Leakage current of LX pin Ilxl Vout=Vlx=10V 1.0 μA Oscillating frequency Fosc Vout=2.9V 22 35 55 kHz Maximum duty ratio Duty Vout=2.9V, Switch"ON" 45 55 65 % Vout=3.0V(ELM9430B) L=330μH, D=MA721, C=22μF, Vss=0V, Top=25°C ■Electrical characteristics |
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