Datasheet XC9268 (Torex) - 6
| Fabricante | Torex |
| Descripción | 36V Operation 0.6A Synchronous Step-Down DC/DC Converters |
| Páginas / Página | 29 / 6 — XC9268. Series. Series Series Series |
| Formato / tamaño de archivo | PDF / 1.7 Mb |
| Idioma del documento | Inglés |
XC9268. Series. Series Series Series
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XC9268 Series Series Series Series Series
■ELECTRICAL CHARACTERISTICS XC9268 Series Ta=25℃ PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNIT CIRCUIT VFB=0.739V→0.761V, FB Voltage VFBE VFB Voltage when Lx pin voltage changes 0.739 0.750 0.761 V ② from "H" level to "L" level Setting Output VOUTSET - 1 - 25 V - Voltage Range (*1) Operating Input VIN - 3 - 36 V - Voltage Range (*1) VEN/SS=12V,VIN:2.8V→2.6V,VFB=0V UVLO Detect Voltage VUVLOD VIN Voltage which Lx pin voltage holding 2.6 2.7 2.8 V ② "H" level VEN/SS=12V,VIN:2.7V→2.9V,VFB=0V UVLO Release Voltage VUVLOR VIN Voltage which Lx pin voltage holding 2.7 2.8 2.9 V ② "L" level XC9268B75C - 12.5 21.0 Quiescent Current Iq VFB=0.825V μA ④ XC9268B75D - 13.5 22.0 Stand-by Current ISTBY VIN=12V, VEN/SS=VFB=0V - 1.65 2.50 μA ④ Connected to external XC9268B75C 1.098 1.200 1.302 Oscillation Frequency fOSC components, MHz ① IOUT=200mA 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 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 I (*3) LIMH 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 VFB=0.675V tSS2 21 26 33 ms ③ Time RSS=430KΩ, CSS=0.47μF Connected to external components, PFM Switch Current IPFM - 400 - mA ① VIN=VEN/SS=12V、IOUT=1mA Connected to external XC9268B75C - 83 - % ① components, Efficiency (*5) EFFI VIN=12V, VOUT=5V, XC9268B75D - 80 - % ① IOUT=1mA FB Voltage ΔVFB/ Temperature (ΔTopr・ -40℃≦Topr≦105℃ - ±100 - ppm/℃ ② Characteristics VFBE) Test Condition: Unless otherwise stated, VIN=12V, VEN/SS=12V Peripheral parts connection conditions：L=6.8μH、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. 6/29
■ELECTRICAL CHARACTERISTICS XC9268 Series Ta=25℃ PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNIT CIRCUIT VFB=0.739V→0.761V, FB Voltage VFBE VFB Voltage when Lx pin voltage changes 0.739 0.750 0.761 V ② from "H" level to "L" level Setting Output VOUTSET - 1 - 25 V - Voltage Range (*1) Operating Input VIN - 3 - 36 V - Voltage Range (*1) VEN/SS=12V,VIN:2.8V→2.6V,VFB=0V UVLO Detect Voltage VUVLOD VIN Voltage which Lx pin voltage holding 2.6 2.7 2.8 V ② "H" level VEN/SS=12V,VIN:2.7V→2.9V,VFB=0V UVLO Release Voltage VUVLOR VIN Voltage which Lx pin voltage holding 2.7 2.8 2.9 V ② "L" level XC9268B75C - 12.5 21.0 Quiescent Current Iq VFB=0.825V μA ④ XC9268B75D - 13.5 22.0 Stand-by Current ISTBY VIN=12V, VEN/SS=VFB=0V - 1.65 2.50 μA ④ Connected to external XC9268B75C 1.098 1.200 1.302 Oscillation Frequency fOSC components, MHz ① IOUT=200mA 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 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 I (*3) LIMH 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 VFB=0.675V tSS2 21 26 33 ms ③ Time RSS=430KΩ, CSS=0.47μF Connected to external components, PFM Switch Current IPFM - 400 - mA ① VIN=VEN/SS=12V、IOUT=1mA Connected to external XC9268B75C - 83 - % ① components, Efficiency (*5) EFFI VIN=12V, VOUT=5V, XC9268B75D - 80 - % ① IOUT=1mA FB Voltage ΔVFB/ Temperature (ΔTopr・ -40℃≦Topr≦105℃ - ±100 - ppm/℃ ② Characteristics VFBE) Test Condition: Unless otherwise stated, VIN=12V, VEN/SS=12V Peripheral parts connection conditions：L=6.8μH、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. 6/29