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XC9268 Datasheet(PDF) 6 Page - Torex Semiconductor |
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XC9268 Datasheet(HTML) 6 Page - Torex Semiconductor |
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6 / 30 page  6/30 XC9268 Series ■ELECTRICAL CHARACTERISTICS XC9268 Series Ta=25℃ PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNIT CIRCUIT FB Voltage VFBE VFB=0.739V→0.761V, VFB Voltage when Lx pin voltage changes from "H" level to "L" level 0.739 0.750 0.761 V ② Setting Output Voltage Range (*1) VOUTSET - 1 - 25 V - Operating Input Voltage Range (*1) VIN - 3 - 36 V - UVLO Detect Voltage VUVLOD VEN/SS=12V,VIN:2.8V→2.6V,VFB=0V VIN Voltage which Lx pin voltage holding "H" level 2.6 2.7 2.8 V ② UVLO Release Voltage VUVLOR VEN/SS=12V,VIN:2.7V→2.9V,VFB=0V VIN Voltage which Lx pin voltage holding "L" level 2.7 2.8 2.9 V ② Quiescent Current Iq VFB=0.825V XC9268B75C - 12.5 21.0 μA ④ XC9268B75D - 13.5 22.0 Stand-by Current ISTBY VIN=12V, VEN/SS=VFB=0V - 1.65 2.50 μA ④ Oscillation Frequency fOSC Connected to external components, IOUT=200mA XC9268B75C 1.098 1.200 1.302 MHz ① XC9268B75D 2.013 2.200 2.387 Minimum On Time tONMIN Connected to external components - 85 (*2) - ns ① Minimum Duty Cycle DMIN VFB=0.825V - - 0 % ② Maximum Duty Cycle DMAX VFB=0.675V 100 - - % ② Lx SW "H" On Resistance RLxH VFB=0.675V, ILx=200mA - 1.20 1.38 Ω ⑤ Lx SW "L" On Resistance RLxL - 0.60 (*2) - Ω ⑤ High side Current Limit (*3) ILIMH VFB=VFBE×0.98 1.00 1.30 - A ⑤ Internal Soft-Start Time tSS1 VFB=0.675V 1.6 2.0 2.4 ms ② External Soft-Start Time tSS2 VFB=0.675V RSS =430KΩ, CSS=0.47μF 21 26 33 ms ③ PFM Switch Current IPFM Connected to external components, VIN=VEN/SS=12V、IOUT=1mA - 400 - mA ① Efficiency (*5) EFFI Connected to external components, VIN=12V, VOUT=5V, IOUT=1mA XC9268B75C - 83 - % ① XC9268B75D - 80 - % ① FB Voltage Temperature Characteristics ΔVFB/ (ΔTopr・ VFBE) -40℃≦Topr≦105℃ - ±100 - ppm/℃ ② Test Condition: Unless otherwise stated, VIN=12V, VEN/SS=12V Peripheral parts connection conditions：L=6.8 μH、RFB1=680kΩ、RFB2=120kΩ、CL=10μF×2、CIN=2.2μF (*1) Please use within the range of VOUT/VIN≧tONMIN[ns]×fOSC[MHz]×10-3 (*2)Design reference value. This parameter is provided only for reference. (*3)Current limit denotes the level of detection at peak of coil current. (*4)For the USP-6C Package only. |
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