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RH5RIXX2B Datasheet(PDF) 9 Page - RICOH electronics devices division |
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RH5RIXX2B Datasheet(HTML) 9 Page - RICOH electronics devices division |
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9 / 24 page  8 • RH5RI303B Symbol Item VOUT Output Voltage VIN Input Voltage Vstart Start-up Voltage Vhold Hold-on Voltage η Efficiency IIN1 Input Current 1 IIN2 Input Current 2 ILX Lx Switching Current ILXleak Lx Leakage Current IEXTH EXT “H” Output Current IEXTL EXT “L” Output Current VCEH1 CE “H” Level 1 VCEL1 CE “L” Level 1 VCEH2 CE “H” Level 2 VCEL2 CE “L” Level 2 ICEH CE “H” Input Current ICEL CE “L” Input Current fosc Maximum Oscillator Frequency Maxdty Oscillator Duty Cycle VLXlim VLX Voltage Limit Conditions MIN. TYP. MAX. Unit Note 2.925 3.000 3.075 V 8V IOUT=1mA,VIN:0 →2V 0.8 0.9 V IOUT=1mA,VIN:2 →0V 0.7 V 70 80 % To be measured at VIN 48 µA at no load To be measured at VIN 25 µA VIN=3.5V VLX=0.4V 60 mA VLX=6V,VIN=3.5V 0.5 µA VEXT=VOUT–0.4V –1.5 mA VEXT=0.4V 1.5 mA VOUT ≥1.5V VOUT–0.4 V VOUT ≥1.5V 0.4 V 0.8V ≤VOUT<1.5V VOUT–0.1 V 0.8V ≤VOUT<1.5V 0.1 V CE=3V 0.5 µA CE=0V – 0.5 µA 80 100 120 kHz on (VLX “L” )side 65 75 85 % Lx Switch on 0.65 0.8 1.0 V Note VOUT=3.0V Unless otherwise provided, VIN=1.8V, VSS=0V, IOUT=10mA, Topt=25˚C, and use External Circuit of Typical Application (FIG. 3). (Note) ILX is gradually increased by the external inductor after Lx Switch is turned ON. In accordance with the increase of ILX, VLX is also increased. When VLX reaches VLXlim, Lx Switch is turned OFF by Lx Switch Protection Circuit. The time period from the time at which VLX reaches VLXlim to the time at which Lx Switch is turned OFF is about 3µs. RH5RI |
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