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XC651A4 Datasheet(PDF) 7 Page - Torex Semiconductor |
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XC651A4 Datasheet(HTML) 7 Page - Torex Semiconductor |
7 / 12 page 1. PFM DC/DC Ta=25 OC PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS CIRCUIT Output Voltage VOUT Ext. components connected 2.438 2.500 2.563 V 1 Operating Voltage VIN - - 6.0 V - Operating Start-Up Voltage VST Ext. components connected, IOUT=1mA - 0.8 0.9 V 1 Operating Hold Voltage VHLD Ext. components connected, IOUT=1mA 0.7 - - V 1 Supply Current 1 IDD1 Output Voltage x 0.95 applied to VOUT - 35.0 56.9 µA 2 Supply Current 2 IDD2 Output Voltage + 0.5V applied to VOUT - 2.5 5.0 µA 2 Lx Switch ON Resistance RSWON Output Voltage x 0.95 applied to VOUT,VLX=0.4V - 9.1 13.7 Ω 2 Lx Leak Current ILXL No ext. components, VOUT=VLX=10V - - 1.0 µA 3 Output Voltage x 0.95 applied to VOUT, Output Voltage applied to LX, When the oscillator frequency is more than double EXT H ON Resistance REXTH Output Voltage x 0.95 applied to VOUT, VEXT=VOUT - 0.4V - 140 210 Ω 2 EXT L ON Resistance REXTL Output Voltage x 0.95 applied to VOUT, VEXT=0.4V - 140 210 Ω 2 Duty Ratio 1 DTY1 Output Voltage x 0.95 applied to VOUT, EXT waveform measurement 70 75 80 % 2 Duty Ratio 2 DTY2 Ext. components connected, IOUT=1mA, LX ON time measurement -62 - % 1 Max Oscillator Frequency MAXFOSC Output Voltage x 0.95 applied to VOUT, EXT waveform measurement 85 100 115 kHz 2 Stand-by Current ISTB Output Voltage x 0.95 applied to VOUT, VEN=0V - 0.2 1.0 µA 2 EN H Voltage VENH Output Voltage x 0.95 applied to VOUT, EXT oscillation judgement 0.7 - - V 4 EN L Voltage VENL Output Voltage x 0.95 applied to VOUT, EXT stopped judgement - - 0.2 V 4 EN H Current IENH Output Voltage x 0.95 applied to VOUT, VEN=VOUT - - 0.25 µA 4 EN L Current IENL Output Voltage x 0.95 applied to VOUT, VEN=0V - - - 0.25 µA 4 Efficiency (note 1) EFFI Ext. components connected -70 - % 1 Conditions : Unless indicated, connect EN to VOUT, VIN=Output Voltage x 0.6, IOUT=10mA Note : 1. EFFI={ [ (output voltage) x (output current) ] / [ (input voltage) x (input current) ] } x 100 - Lx Control Voltage VLXLMT 0.7 1.1 V 2 XC651A Series 675 10 10S_02XC651A 02.09.12 15:38 ページ 675 |
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