Datasheet XD9267, XD9268 (Torex) - 6

XD9267/XD9268 Series
■ELECTRICAL CHARACTERISTICS XD9267/XD9268 Series Ta=25℃ PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNIT CIRCUIT VFB=0.731V→0.769V, VFB Voltage when Lx pin voltage changes 0.739 0.750 0.761 FB Voltage VFBE from"H" level to "L" level V ② -40℃≦Ta≦105℃ 0.731 - 0.769 Setting Output VOUTSET - 1 - 25 V - Voltage Range (*1) Operating Input VIN - 3 - 36 V - Voltage Range (*1) VEN/SS=12V,VIN:2.87V→2.53V,VFB=0V VIN Voltage which Lx pin voltage holding 2.6 2.7 2.8 UVLO Detect Voltage VUVLOD V ② "H" level -40℃≦Ta≦105℃ 2.53 - 2.87 VEN/SS=12V,VIN:2.63V→2.97V,VFB=0V VIN Voltage which Lx pin voltage holding 2.7 2.8 2.9 UVLO Release Voltage VUVLOR V ② "L" level -40℃≦Ta≦105℃ 2.63 - 2.97 XD9267 - 290 500 -40℃≦Ta≦105℃ - - 550 Quiescent Current Iq VFB=0.825V μA ④ XD9268 - 13.5 22.0 -40℃≦Ta≦105℃ - - 30 VIN=12V, VEN/SS=VFB=0V - 1.65 2.50 Stand-by Current ISTBY μA ④ -40℃≦Ta≦105℃ - - 3.90 Connected to external components, 2.013 2.200 2.387 IOUT=200mA Oscillation Frequency fOSC MHz ① -40℃≦Ta≦105℃ 1.936 - 2.464 Minimum On Time tONMIN Connected to external components - 85 (*2) - ns ① Minimum Duty Cycle DMIN VFB=0.825V -40℃≦Ta≦105℃ - - 0 % ② Maximum Duty Cycle DMAX VFB=0.675V -40℃≦Ta≦105℃ 100 - - % ② Lx SW "H" On RLxH VFB=0.675V, ILx=200mA - 1.20 1.38 Ω ⑤ Resistance Lx SW "L" On 0.60 RLxL - - - Ω ⑤ Resistance (*2) High side Current Limit (*3) ILIMH VFB=VFBE×0.98 1.00 1.30 - A ⑤ Internal Soft-Start Time tSS1 VFB=0.675V 1.0 2.0 4.0 ms ② VFB=0.675V External Soft-Start Time tSS2 21 26 33 ms ③ RSS=430KΩ, CSS=0.47μF Test Condition: Unless otherwise stated, VIN=12V, VEN/SS=12V, VPG=OPEN(*4) Peripheral parts connection conditions：L=3.3μH,RFB1=680kΩ,RFB2=120kΩ,CFB=12pF,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. 6/26