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FAN50FC3MPX Datasheet(PDF) 7 Page - Fairchild Semiconductor |
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FAN50FC3MPX Datasheet(HTML) 7 Page - Fairchild Semiconductor |
7 / 21 page © 2007 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN50FC3 Rev. 1.0.0 7 of 21 Electrical Characteristics (Continued) VCC = 12V, FBRTN = GND, and TA = +25°C. The • denotes specifications which apply over the full operating temperature range. Symbol Parameter Conditions Min. Typ. Max. Unit Current-Sense Amplifier (Continued) Output Voltage Range • 0.05 3.20 V ICSCOMP Output Current 1 mA Current Balance Circuit VSW(x)CM Common Mode Range (3) • -600 +200 mV RSW(x) Input Resistance SW(x) = 0V • 35 50 65 k Ω ISW(x) Input Current SW(x) = 0V • 1.6 3.3 5.0 µA ΔISW(x) Input Current Matching SW(x) = 0V • -5 +5 % Current Limit Comparator VILIMIT Output Voltage RILIMT = 143kΩ • 1.6 1.7 1.8 V IILIMIT Output Current RILIMT = 143kΩ 12 µA Maximum Output Current • 60 µA VCL Current Limit Threshold Voltage VCSREF − VCSCOMP, RILIMT = 143kΩ • 100 120 140 mV Current Limit Setting Ratio VCL / IILIMT 10 mV/µA Delay Timer IDELAY Normal Mode Output Current • 12 15 18 µA IDELAY(CL) Output Current in Current Limit • 3.00 3.75 4.50 µA VDELAY(TH) Threshold Voltage • 1.6 1.7 1.8 V Soft-Start I(SS) Output Current During Start-up • 12 15 18 µA Enable Input VTH(EN) Threshold Voltage • 800 850 900 mV VHYS(EN) Threshold Hysteresis • 80 100 130 mV IIN(EN) Enable Input Current 1 µA tDELAY(EN) Turn-On Delay Start-up sequence, EN>950mV, CDELAY = 10nF 2 ms #OD Output VOL(ODB) Output Voltage LOW IPWM(SINK) = 400μA • 160 400 mV VOH(ODB) Output Voltage HIGH IPWM(SOURCE) = 400μA • 4 5 V Power-Good Comparator VPWRGD(UV) Under-Voltage Threshold Relative to Nominal DAC Output • -300 -250 -200 mV VPWRGD(OV) Over-Voltage Threshold Relative to Nominal DAC Output • 100 150 200 mV VOL(PWRGD) Output Low Voltage IPWRGD(SINK) = -4mA • 200 300 mV t1PG(DLY) Power Good Delay Time 1 Start-up Sequence; CDELAY = 10nF; Power Good Blanking Time • 2 ms t2PG(DLY) Power Good Delay Time 2 VID Code Changing; CDELAY = 10nF; Power Good Blanking Time • 100 250 µs t3PG(DLY) Power Good Delay Time 3 (3) VID Code Static; CDELAY = 10nF; Power Good Blanking Time • 100 200 ns |
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