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FSD1000 Datasheet(PDF) 6 Page - Fairchild Semiconductor |
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FSD1000 Datasheet(HTML) 6 Page - Fairchild Semiconductor |
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FSD1000 6 Electrical Characteristics (Ta=25 °C unless otherwise specified) Note: 1. These parameters, although guaranteed, are not 100% tested in production Parameter Symbol Condition Min. Typ. Max. Unit SENSEFET SECTION Drain-Source Breakdown Voltage BVdss VCC = 0V, ID = 100 µA 700 - - V Off-State Current Idss VDS = 560V - - 100 µA On-State Resistance RDS(ON) Tj = 25 °C ID = 100mA - 7.8 9.0 Ω Tj = 100 °C ID = 100mA - 12.9 15.0 Ω Rising Time 2 (1) TR2 VDS = 350V, ID = 500mA - 100 - ns Falling Time 2 (1) TF2 VDS = 350V, lD = 500mA - 50 - ns Leading Edge Blanking(1) TLEB - - 250 - ns Pulse-by-pulse current limit ILIM With 33 Ω resistor between ILIM pin and ground pin 0.8 1.0 1.2 A CONTROL SECTION Switching Frequency Fosc Tj = 25 °C 616773 kHz Main Feedback Source Current IFB,MAIN Ta = 25 °C, VFB,MAIN = 0V 0.6 0.7 0.8 mA Shutdown Main Delay Current IDELAY,MAIN Ta = 25 °C 5V < VFB,MAIN < VSD,MAIN 3.5 5.0 6.5 uA Aux. Feedback Source Current IFB,MAIN Ta = 25 °C, VFB,AUX = 0V 0.3 0.4 0.5 mA Shutdown Aux. Delay Current IDELAY,MAIN Ta = 25 °C 3V < VFB,AUX < VSD,AUX 3.5 5.0 6.5 uA Maximum Duty Cycle Dmax VFB,AUX = 3.5V 1.4V < LS2 < 2V 62 67 72 % Maximum Duty Cycle Dmax VFB,AUX = 3.5V 2V < LS2 < 4.4V 45 50 55 % Minimum Duty Cycle Dmin VFB,AUX = 0V - 0 0 % UVLO Threshold Voltage Vstart - 12.5 13.5 14.5 V Vstop After turn on 8.5 9.5 10.5 V SOFT START SECTION Soft Start Current ISOFT - 354555 uA Internal Soft Start Time TSS -- 10 - ms Internal Time Delay Td -- 30 - ms PROTECTION SECTION Thermal Shutdown Temperature (Tj) (1) TSD (Note 1) 140 160 - °C Shutdown Main Feedback Voltage VSD,MAIN - 6.0 7.0 8.0 V Shutdown Aux. Feedback Voltage VSD,AUX Vfb = 4V 4.0 4.5 5.0 V OUTPUT SECTION Rising Time 1 (1) TR1 Ta = 25 °C, CL = 100pF - 45 150 ns Falling Time 1 (1) TF1 Ta = 25 °C, CL = 100pF - 35 150 ns |
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