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FAN4822 Datasheet(PDF) 4 Page - Fairchild Semiconductor |
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FAN4822 Datasheet(HTML) 4 Page - Fairchild Semiconductor |
4 / 10 page FAN4822 PRODUCT SPECIFICATION 4 REV. 1.0.1 8/10/01 Gain Modulator Gain (Note 2) IIAC = 100mA, VVRMS = 0V, VFB = 0V 0.36 0.51 0.66 IIAC = 50mA, VVRMS = 1.2V, VFB = 0V 1.20 1.72 2.24 IIAC = 100 µA, VVRMS = 1.8V, VFB = 0V 0.55 0.78 1.01 IIAC = 100 µA, VVRMS = 3.3V, VFB = 0V 0.14 0.20 0.26 Bandwidth IIAC = 250 µA 10 MHz Output Voltage VFB = 0V, VVRMS = 1.15V, IIAC = 250 µA 0.72 0.8 0.9 V Oscillator Initial Accuracy TA = 25°C 74 80 87 kHz Voltage Stability VCCZ – 3V < VCC < VCCZ – 0.5V 1 % Temperature Stability 2 % Total Variation Line, temperature 72 89 kHz Ramp Valley to Peak Voltage 2.5 V Dead Time 100 300 450 ns CT Discharge Current 4.5 7.5 9.5 mA Reference Output Voltage TA = 25°C, IREF = 1mA 7.4 7.5 7.6 V Line Regulation VCCZ – 3V < VCC < VCCZ – 0.5V 2 10 mV Load Regulation 1mA < IREF, < 20mA 2 15 mV Temperature Stability 0.4 % Total Variation Line, load, and temperature 7.35 7.65 V Long Term Stability Tj = 125°C, 1000 hours 5 25 mV Short Circuit Current VCC < VCCZ – 0.5V, VREF = 0V –15 –40 –100 mA PFC Comparator Minimum Duty Cycle VIEAO > 6.7V 0 % Maximum Duty Cycle VIEAO < 1.2V 90 95 % MOSFET Driver Outputs Output Low Voltage IOUT = –20mA 0.4 1.0 V IOUT = –100mA 1.5 3.5 V IOUT = –10mA, VCC = 8V 0.8 1.5 V Output High Voltage IOUT = 20mA 9.5 10.3 V IOUT = 100mA 9 10.3 V Output Rise/Fall Time CL = 1000pF 40 ns Undervoltage Lockout Threshold Voltage VCCZ – 0.9 VCCZ – 0.6 VCCZ – 0.2 V Hysteresis 2.4 2.9 3.45 V Parameter Conditions Min. Typ. Max. Units Electrical Characteristics (Continued) Unless otherwise specified, RT = 52.3kΩ, CT = 470pF, TA = Operating Temperature Range (Note 1) |
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