Datenblatt-Suchmaschine für elektronische Bauteile |
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FAN6755WMY Datenblatt(PDF) 7 Page - Fairchild Semiconductor |
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FAN6755WMY Datenblatt(HTML) 7 Page - Fairchild Semiconductor |
7 / 17 page © 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN6755W / FAN6755UW • Rev. 1.0.7 7 Electrical Characteristics VDD=15 V, TA=25C, unless otherwise noted. Symbol Parameter Conditions Min. Typ. Max. Unit Oscillator Section fOSC Frequency in Normal Mode Center Frequency FAN6755W 62 65 68 kHz FAN6755UW 124 130 136 Hopping Range FAN6755W ±4.5 ±5.2 ±5.9 FAN6755UW ±9 ±10.4 ±11.8 fOSC-G Green-Mode Frequency 20 23 26 kHz tHOP Hopping Period 10 12 14 ms fDV Frequency Variation vs. VDD Deviation VDD=11 V to 22 V 5 % fDT Frequency Variation vs. Temperature Deviation TA=-40 to 85C=TJ 5 % VIN Section VIN-OFF PWM Turn-Off (Brown-out) Threshold Voltage 0.66 0.70 0.74 V VIN-ON PWM Turn-On (Brown in) Threshold Voltage VIN-OFF+ 0.17 VIN-OFF+ 0.20 VIN-OFF+ 0.23 V VIN-Protect Threshold Voltage of VIN Over- Voltage Protection 5.1 5.3 5.5 V tVIN-Protect Debounce Time of VIN Over- Voltage Protection 60 100 140 µs Current-Sense Section VLIMIT at VIN=1 V Threshold Voltage for Current Limit VIN=1 V 0.80 0.83 0.86 V VLIMIT at VIN=3 V Threshold Voltage for Current Limit VIN=3 V 0.67 0.70 0.73 V tPD Delay to Output 100 200 ns tLEB Leading-Edge Blanking Time Soft-Start (FAN6755UW) 125 150 175 ns Steady State 240 290 340 tSS Period During Soft-Start Time Startup Time 4.0 5.5 7.0 ms VLimit VIN VIN-OFF VIN-Protect =3V VIN VIN=1V VSENSE =0.83V VSENSE =0.7V =0.92V =5.3V Figure 6. VIN vs. VSENSE Continued on the following page… |
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