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FAN6793 数据表(PDF) 8 Page - Fairchild Semiconductor |
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FAN6793 数据表(HTML) 8 Page - Fairchild Semiconductor |
8 / 19 page © 2008 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN6791 / FAN6793 • Rev. 1.0.2 8 Electrical Characteristics VDD=18V; RI=24kΩ;TA =25°C, unless noted. Symbol Parameter Conditions Min. Typ. Max. Units ON/OFF RON/OFF Impedance ON/OFF Pin 50 100 kΩ VON High Threshold Level of Synchronizing Signal 2.4 3.0 3.6 V VOFF Low Threshold Level of Synchronizing Signal 0.8 1.0 1.2 V Over Temperature Protection (OTP) TOff Protection Junction Temperature (1) 130 140 +150 °C TRestart Restart Junction Temperature (2) 100 110 +120 °C Flyback PWM Stage FBFYB Feedback Input AV-FLY FB Input to Current Comparator Attenuation 1/3.75 1/3.20 1/2.75 V/V ZFB Input Impedance 4 5 7 kΩ VHGH Output High Voltage FB Pin Open 5.0 5.2 V VFB-OLP FB Open-Loop Trigger Level 4.2 4.5 4.8 V tOLP FB Open-Loop Protection Delay 53 56 59 ms VN Green Mode Entry FB Voltage 2.4 2.5 2.6 V SG Slope of Green-Mode Modulation 60 75 90 Hz/mV VG Green Mode Ending FB Voltage 1.8 1.9 2.0 V VOZ-OFYB VFBPWM for Zero Duty Cycle (Forward Turn On) 1.2 1.3 1.4 V IFYB Current Sense ZCS Input Impedance 12 kΩ VLIMIT1 Peak Current Limit Threshold Voltage 1 VRMS=1V 0.75 0.80 0.85 V VLIMIT2 Peak Current Limit Threshold Voltage 2 VRMS=1.5V VLIMIT1 -0.1 V tPD Propagation Delay to GATE Output VDD=15V, OFYB Drops to 9V 60 120 ns tBNK Leading-Edge Blanking Time 200 270 350 ns ΔVSLOPE Slope Compensation Duty=DCYMAX 0.34 0.37 0.41 V VS-SCP Threshold Voltage for SENSE Short-Circuit Protection 0.1 0.15 0.2 V tD-SSCP Delay Time for SENSE Short- Circuit Protection VSENSE<0.15V, RI=24KΩ 100 180 240 µs OFYB-GATE Driver VOFYB-CLAMP Flyback PWM Gate Output Clamping Voltage VDD=22V 16 18 V VOL-OFYB Output Voltage Low VDD=15V; IO=20mA 1.5 V VOH-OFYB Output Voltage High VDD=12V; IO=20mA 8 V tR-OFYB Rising Time VDD=15V; Gate=1nF; Gate=2~9V 30 60 120 ns tF-OFYB Falling Time VDD=15V; Gate=1nF; Gate=9~2V 30 50 90 ns DCYMAX-OFYB Maximum Duty Cycle 60 65 70 % |
类似零件编号 - FAN6793 |
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类似说明 - FAN6793 |
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