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FAN6863WTY Datasheet(PDF) 5 Page - Fairchild Semiconductor |
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FAN6863WTY Datasheet(HTML) 5 Page - Fairchild Semiconductor |
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5 / 16 page  © 2011 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN6863W • Rev. 1.0.1 5 Electrical Characteristics VDD = 15V and TA = 25°C, unless otherwise noted. Symbol Parameter Condition Min. Typ. Max. Unit VDD Section VDD-OP Continuously Operating Voltage 20 V VDD-ON Turn-On Threshold Voltage 15 16 17 V VDD-OFF Turn-Off Voltage 6.5 7.0 7.5 V VDD-LH Threshold Voltage for Latch-Off Release 4 V IDD-ST Startup Current VDD-ON – 0.16V 8 15 µA IDD-OP1 Operating Supply Current in PWM Operation VDD = 20V, VFB = 3V Gate Open 2 mA IDD-OP2 Operating Supply Current when VFB < VFB-ZDC VDD = 15V, VFB < VFB-ZDC 600 µA VDD-OVP VDD Over-Voltage Protection FAN6863WL-Latch, FAN6863WR-Auto Restart 21.2 22.2 23.2 V tD-VDDOVP VDD OVP Debounce Time 50 µs IDD-LH Latch-Off Holding Current VDD = 5V; FAN6863W, FAN6863WL Only 70 80 µA Feedback Input Section AV Input-Voltage to Current-Sense Attenuation 1/4.0 1/3.5 1/3.0 V/V ZFB Input Impedance 17 kΩ VFB-OPEN FB Pin Open Voltage 5.2 5.4 5.6 V VFB-OLP Threshold Voltage for Open-Loop Protection 4.3 4.6 4.9 V tD-OLP Open-Loop Protection Delay VFB > VFB-OLP, tON > 2.5µs, TA = -40 to +105°C 54 60 66 ms tD-SCP Secondary Short-Circuit Protection Delay FB > VFB-OLP, tON < 2.5µs, TA = -40 to +105°C 6 7 8 ms tON-SCP Short-Circuit Protection On-Time Detection VFB>VFB-OLP, TA = -40 to +105°C 2.5 µs Current Sense Section tPD Delay to Output 100 250 ns tLEB Leading-Edge Blanking Time 200 250 ns VLIMIT-H HIGH Threshold Voltage for Current Limit Duty>55% 0.57 0.60 0.63 V VLIMIT-L LOW Threshold Voltage for Current Limit Duty = 0% 0.36 0.39 0.42 V tSOFT-START Period During Startup Time Startup Time 4.75 5.00 10.00 ms VSSCP Threshold Voltage for SENSE Short-Circuit Protection tON > 4.5µs, FB < VFB-OLP, TA = -40 to +105°C 110 mV tON-SSCP Detect SENSE On Time for SENSE Short- Circuit Protection 4.4 µs tSSCP Debounce Time for SENSE Short-Circuit Protection tON > 4.5µs, VFB < VFB-OLP, TA = -40 to +105°C 100 µs Continued on the following page… |
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