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FAN6754 Datasheet(PDF) 7 Page - Fairchild Semiconductor |
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FAN6754 Datasheet(HTML) 7 Page - Fairchild Semiconductor |
7 / 14 page © 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN6754 • Rev. 1.0.1 7 Electrical Characteristics (Continued) VDD=15V and TA=25°C unless otherwise noted. Symbol Parameter Conditions Min. Typ. Max. Units Oscillator Section fOSC Frequency in Normal Mode Center Frequency 61 65 69 KHz Hopping Range ±3.7 ±4.2 ±4.7 tHOP Hopping Period FB > VFB-N 3.9 4.4 4.9 ms FB=VFB-G 10.2 11.5 12.8 ms fOSC-G Green-Mode Frequency 19 22 25 KHz fDV Frequency Variation vs. VDD Deviation VDD=11V to 22V 5 % fDT Frequency Variation vs. Temperature Deviation TA=-40 to +105°C 5 % Feedback Input Section AV Input Voltage to Current-Sense Attenuation 1/4.5 1/4.0 1/3.5 V/V ZFB Input Impedance 14 16 18 kΩ VFB-OPEN Output High Voltage FB Pin Open 4.8 5.0 5.2 V VFB-OLP FB Open-Loop Trigger Level 4.3 4.6 4.9 V tD-OLP Delay Time of FB Pin Open-Loop Protection 50 55 60 ms VFB-N Green-Mode Entry FB Voltage Pin, FB Voltage (FB =VFB-N) 2.6 2.8 3.0 V Hopping Range ± 3.7 ± 4.2 ± 4.7 kHz VFB-G Green-Mode Ending FB Voltage Pin, FB Voltage (FB =VFB-G) 2.1 2.3 2.5 V Hopping Range ± 1.27 ± 1.45 ± 1.62 kHz VFB-ZDCR FB Threshold Voltage for Zero-Duty Recovery 1.9 2.1 2.3 V VFB-ZDC FB Threshold Voltage for Zero-Duty 1.8 2.0 2.2 V Continued on the following page… Figure 8. VFB vs. PWM Frequency PWM Frequency fOSC fOSC-G VFB-N VFB-G VFB-ZDC VFB VFB-ZDCR |
Similar Part No. - FAN6754_09 |
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Similar Description - FAN6754_09 |
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