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XC9250A083QR-G Datasheet(PDF) 7 Page - Torex Semiconductor |
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XC9250A083QR-G Datasheet(HTML) 7 Page - Torex Semiconductor |
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7 / 28 page  7/28 XC9250/XC9251 Series ■ ELECTRICAL CHARACTERISTICS (Continued) ● XC9251A/B083 PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS CIRCUIT FB Voltage VFB1 VFB=0.816V→0.784V, VSS=6V VFB Voltage when Lx pin oscillates 0.784 0.8 0.816 V ③ FB Voltage Temperature Characteristics ∆VFB/ (∆Topr・VFB) -40℃≦Topr≦105℃ - ±50 - ppm/℃ ③ Output Voltage Setting Range VOUTSET - 1.2 (*1) - VIN-3 or 12 (*2) V - Operating Voltage Range VIN - 7 - 30 V - UVLO detect voltage VUVLO1 VIN=4.9V→4.3V, VFB=0.65V, VSS=6V VIN Voltage when Lx pin voltage changes from "H" level to "L" level 4.3 4.6 4.9 V ③ UVLO release voltage VUVLO2 VIN=4.7V→5.3V, VFB=0.65V, VSS=6V VIN Voltage when Lx pin voltage changes from "L" level to "H" level 4.7 5.0 5.3 V ③ Quiescent Current Iq VIN=VCE=30V, VFB=0.95V - 200 310 μ A ④ Stand-by Current ISTB VIN=30V, VCE=0V, VSS=0V, VSYNC=0V - 0.01 0.1 μ A ④ Oscillation Frequency fOSC Connected to external components, IOUT=300mA 270 300 330 kHz ① External Clock Signal Synchronized Frequency SYNCOSC Connected to external components, IOUT=0mA fOSCx0.75 fOSC fOSCx1.25 kHz ② External Clock Signal Duty Cycle DSYNC Connected to external components, IOUT=0mA 25 - 75 % ② Maximum Duty Cycle DMAX VFB=0.65V 83 85 88 % ③ Minimum Duty Cycle DMIN VFB=0.95V - - 0 % ③ Lx SW On Resistance RLx VFB=0.65V, VSS=6V - 0.3 0.6 Ω ③ PFM Switch Current IPFM Connected to external components, IOUT=0mA 80 160 240 mA ① Current Limit (*3) ILIM VFB=0.65V, VSS=6V 2.4 3.2 - A ③ Latch Time tLAT XC9251A series only, Connected to external components, VFB=0.65V, VSS=6V 0.8 1.3 1.8 ms ⑤ Short Detect Voltage VSHORT XC9251B series only, Connected to external components, VFB=0.45V→0.35V, VSS=6V VFB Voltage when Oscillation Frequency is decreased 0.35 0.40 0.45 V ⑤ Internal Soft-start Time tSS1 VCE=0→12V, VSS=6V, VFB=VFB1×0.9V Time until Lx pin oscillates 0.8 1.3 2.0 ms ③ External Soft-start Time tSS2 VCE=0→12V, VSS=6V, VFB=VFB1×0.9V, CSS=0.01μF Time until Lx pin oscillates 9 15 24 ms ③ Efficiency (*4) EFFI Connected to external components, IOUT=1A - 91 - % ① SYNC ‘H’ Voltage VSYNCH Connected to external components, IOUT=0mA 1.5 - 6 V ② SYNC ‘L’ Voltage VSYNCL Connected to external components, IOUT=0mA - - 0.4 V ② SYNC ‘H’ Current ISYNCH VIN=VCE=30V, VSYNC=6V, VFB=0.95V -0.1 0 0.1 μ A ④ SYNC ‘L’ Current ISYNCL VIN=VCE=30V, VSYNC=0V, VFB=0.95V -0.1 0 0.1 μ A ④ FB ‘H’ Current IFBH VIN=VCE=30V, VFB=6V, VSS=6V -0.1 0 0.1 V ④ FB ‘L’ Current IFBL VIN=VCE=30V, VFB=0V, VSS=6V -0.1 0 0.1 V ④ CE ‘H’ Voltage VCEH VCE=1.0V→2.8V, VFB=0.65V, VSS=6V VCE Voltage when Lx pin voltage changes from "L" level to "H" 2.8 - 30 V ③ CE ‘L’ Voltage VCEL VCE=2.8V→1.0V, VFB=0.65V, VSS=6V VCE Voltage when Lx pin voltage changes from "H" level to "L" - - 1 V ③ CE ‘H’ Current ICEH VIN=VCE=30V, VFB=0.95V -0.1 0 0.1 μ A ④ CE ‘L’ Current ICEL VIN=30V, VCE=0V, VFB=0.95V -0.1 0 0.1 μ A ④ Thermal Shutdown Temperature TTSD Junction Temperature - 150 - ℃ - Hysteresis Width THYS Junction Temperature - 25 - ℃ - Ta=25℃ NOTE: Unless otherwise stated, VIN=VCE=12V, VSYNC=2V, VSS=2V External Components: Unless otherwise stated, L=22μH, CIN=10μF, CL=47μF, CBST=1μF, RFB1=2kΩ, RFB2=390Ω, CFB=10nF (*1) Limited by a minimum ON time of 0.22μs (TYP.). (*2) VIN-3 or 12, whichever is lower. (*3) Current limit denotes the level of detection at peak of coil current. (*4) EFFI=[(output voltage × output current)÷(inputvoltage × input current)]×100 |
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