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FAN6791 Datasheet(PDF) 7 Page - Fairchild Semiconductor |
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FAN6791 Datasheet(HTML) 7 Page - Fairchild Semiconductor |
7 / 19 page © 2008 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN6791 / FAN6793 • Rev. 1.0.2 7 Electrical Characteristics VDD=18V; RI=24kΩ;TA =25°C, unless noted. Symbol Parameter Conditions Min. Typ. Max. Units VDD Section VDD-OP Continuously Operating Voltage 22 V IDD ST Startup Current VDD – 0.16V 10 50 μA IDD-OP1 Operating Current 1 VDD=15V, GATE Open 6 10 mA IDD-OP2 Operating Current 2 VDD=15V, GATE Open, IREF=10mA 16 20 mA VTH-ON Start Threshold Voltage 15 16 17 V VTH-OFF Minimum Operating Voltage 9 10 11 V VTH-OLP IDD-OLP Off Voltage 6.5 7.5 8.0 V ITH-OLP Internal Sink Current VTH-OLP +0.1V 70 80 100 μA VDD-OVP VDD Over-voltage Protection (Turn Off PWM with Delay) 23.4 24.5 25.5 V tOVP VDD Over-Voltage Protection Debounce VDD-OVP=26V 80 100 120 μs HV ID Maximum Input Current VAC=90V(VDC=120V), VDD=10µF 1.5 2.5 3.5 mA IHV-CS Internal Current Source HV=500V,VDD=15V 10 50 μA Oscillator and Green-Mode Operation VRI RI Voltage 1.176 1.200 1.224 V Center Frequency, RI=24kΩ 62 65 68 fOSC Normal PWM Frequency Jitter Range ±3.7 ±4.2 ±4.7 kHz fOSC-G-MIN Minimum Frequency in Green Mode RI=24kΩ 18 20 22 kHz RI RI Range 12 24 47 kΩ RIOPEN RI Pin Open Protection If RI > RIOPEN, PWM Turned Off 1 MΩ RISHORT RI Pin Short Protection If RI > RISHORT, PWM Turned Off 6 kΩ VRMS for AC Brownout Protection VRMS-OFF Off Threshold Voltage for AC Brownout Protection 0.75 0.80 0.85 V VRMS-ON Start Threshold Voltage for AC Brownout Protection VRMS-UVP-1 +0.17 VRMS-UVP-1 +0.19 VRMS-UVP-1 +0.21 V tRMS AC Brownout Protection Debounce Time RI=24kΩ 150 195 240 ms VREF VREF Reference Voltage IREF=1mA, CREF=0.1µF 4.75 5.00 5.25 V △ VREF1 Load Regulation of Reference Voltage CREF=0.1µF, IREF=1mA to 10mA 80 mV △ VREF2 Line Regulation of Reference Voltage CREF=0.1µF, VDD=12V to 22V 25 mV IREF_MAX Maximum Current 10 15 mA IOS Output Short Circuit 15 20 25 mA |
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