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FSFR1600XS Datasheet(PDF) 6 Page - Fairchild Semiconductor |
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FSFR1600XS Datasheet(HTML) 6 Page - Fairchild Semiconductor |
6 / 14 page © 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com FSFR-XS Series • Rev.1.0.1 6 Electrical Characteristics (Continued) TA=25°C unless otherwise specified. Symbol Parameter Test Conditions Min. Typ. Max. Unit UVLO Section LVCCUV+ LVCC Supply Under-Voltage Positive Going Threshold (LVCC Start) 11.2 12.5 13.8 V LVCCUV- LVCC Supply Under-Voltage Negative Going Threshold (LVCC Stop) 8.9 10.0 11.1 V LVCCUVH LVCC Supply Under-Voltage Hysteresis 2.50 V HVCCUV+ HVCC Supply Under-Voltage Positive Going Threshold (HVCC Start) 8.2 9.2 10.2 V HVCCUV- HVCC Supply Under-Voltage Negative Going Threshold (HVCC Stop) 7.8 8.7 9.6 V HVCCUVH HVCC Supply Under-Voltage Hysteresis 0.5 V Oscillator & Feedback Section VRT V-I Converter Threshold Voltage RT=5.2KΩ 1.5 2.0 2.5 V fOSC Output Oscillation Frequency 94 100 106 KHz DC Output Duty Cycle 48 50 52 % fSS Internal Soft-Start Initial Frequency fSS=fOSC+40kHz, RT=5.2KΩ 140 KHz tSS Internal Soft-Start Time 2 3 4 ms Protection Section VCssH Beginning Voltage to Discharge CSS 0.9 1.0 1.1 V VCssL Beginning Voltage to Charge CSS and Restart 0.16 0.20 0.24 V VOVP LVCC Over-Voltage Protection LVCC > 21V 21 23 25 V VAOCP AOCP Threshold Voltage -1.0 -0.9 -0.8 V tBAO AOCP Blanking Time (6) VCS < VAOCP 50 ns VOCP OCP Threshold Voltage -0.64 -0.58 -0.52 V tBO OCP Blanking Time (6) VCS < VOCP 1.0 1.5 2.0 μs tDA Delay Time (Low Side) Detecting from VAOCP to Switch Off (6) 250 400 ns TSD Thermal Shutdown Temperature (6) 120 135 150 °C Dead-Time Control Section DT Dead Time (7) 350 ns Notes: 6. This parameter, although guaranteed, is not tested in production. 7. These parameters, although guaranteed, are tested only in EDS (wafer test) process. |
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