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FAN4800 Datasheet(PDF) 6 Page - Fairchild Semiconductor |
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FAN4800 Datasheet(HTML) 6 Page - Fairchild Semiconductor |
6 / 19 page © 2005 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN4800 Rev. 1.0.6 6 Electrical Characteristics (Continued) Unless otherwise stated, these specifications apply: VCC = 15V, RT = 52.3kΩ, CT = 470pF, and TA = -40°C to 125°C. Symbol Parameter Condition Min. Typ. Max. Unit PFC ILIMIT COMPARATOR Vth(cs) Threshold Voltage -1.10 -1.00 -0.90 V Vth(cs)-Vgm (PFC ILIMIT VTH – Gain Modulator Output) 5 100 mV td(pfc_off) Delay to Output(1) 250 ns DC ILIMIT COMPARATOR Vth(DC) Threshold Voltage 0.95 1.00 1.05 V td(pwm_off) Delay to Output(1) 250 ns VIN OK COMPARATOR Vth(OK) Threshold Voltage 2.10 2.45 V HY(OK) Hysteresis 0.8 1.0 1.2 V GAIN MODULATOR G1 Gain(3) IAC = 100μA, VRMS = 0, VFB = 1V, TA = 25°C 0.70 0.84 0.95 Gain(3) G2 IAC = 100μA, VRMS = 1.1V, VFB = 1V, TA = 25°C 1.80 2.00 2.20 G3 IAC = 150μA, VRMS = 1.8V, VFB = 1V, TA = 25°C 0.90 1.00 1.10 G4 IAC = 300μA, VRMS = 3.3V, VFB = 1V, TA = 25°C 0.25 0.32 0.40 BW Band Width(1) IAC = 100μA10 MHz Vo(gm) Output Voltage = 3.5k Ω x (I SENSE – IOFFSET) IAC = 250μA, VRMS = 1.1V, VFB = 2V, TA = 25°C 0.80 1.00 1.20 V OSCILLATOR fosc1 Initial Accuracy TA = 25°C 68 81 kHz Δf osc1 Voltage Stability 11V < VCC < 16.5V 1 % Δf osc2 Temperature Stability 2 % fosc2 Total Variation Line, Temp 66 84 kHz Vramp Ramp Valley to Peak Voltage(1) 2.75 V tdead PFC Dead Time 685 ns Idis CT Discharge Current VRAMP2 = 0V, VRAMP1 = 2.5V 6.5 15.0 mA REFERENCE Vref1 Output Voltage TA = 25°C, I(VREF) = 1mA 7.4 7.5 7.6 V ΔV ref1 Line Regulation 11V < VCC < 16.5V 10 25 mV ΔV ref2 Load Regulation 0mA < I(VREF) < 7mA 10 20 mV ΔV ref4 Temperature Stability 0.4 % Vref2 Total Variation(1) Line, Load, Temperature 7.35 7.65 V ΔV ref5 Long Term Stability(1) TJ = 125°C, 1000 hours 5 25 mV |
Similar Part No. - FAN4800_10 |
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Similar Description - FAN4800_10 |
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