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SGP100 Datasheet(PDF) 5 Page - Fairchild Semiconductor |
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SGP100 Datasheet(HTML) 5 Page - Fairchild Semiconductor |
5 / 14 page Product Specification Primary-side-control PWM Controller SGP100 © System General Corp. - 5 - www.sg.com.tw • www.fairchildsemi.com Version 1.1.1 (IAO33.0042.B1) September 26, 2007 Voltage-Sense Section Symbol Parameter Test Condition Min. Typ. Max. Unit TRATIO Proportion of TON and TDIS for Brownout Protection* TON /TDIS 1.5 ITC-25 CV Temperature Compensation Current 9 10 11 µA * Guaranteed by design. Current-Sense Section Symbol Parameter Test Condition Min. Typ. Max. Unit ZCS Filter Resistance 2 kΩ TPD Propagation Delay to GATE Output 150 200 ns TLEB Leading-Edge Blanking Time TMIN-N-TPD 825 1025 1225 ns TMIN-N Minimum On-time at No Load 1075 1200 1350 ns VSLOPE Slope Compensation* 0.37 0.40 0.43 V DSAW Duty Cycle of SAW Limiter* 35 40 45 % VTH-VA Valley Threshold Voltage for Current Limit VTH-FT - 0.4 VTH-FT - 0.25 VTH-FT - 0.1 V VTH-FT Flat threshold Voltage for Current Limit 1.2 1.3 1.5 V * Guaranteed by design. TH VA V − TH FT V − MAX DCY 40% Saw Limiter Voltage Error Amplifier Section Symbol Parameter Test Condition Min. Typ. Max. Unit VVR Reference Voltage 2.475 2.500 2.525 V VN Green-Mode Starting Voltage FS=FOSC-2KHz 1.55 1.70 1.85 V VG Green-Mode Ending Voltage FS=1KHz 0.55 0.90 V SG Green-Mode Frequency Decreasing Rate SG=(FOSC-3KHz)/(VN-VG) 25 35 45 Hz/mV IV-SINK Output Sink Current VVS=3V, VCOMV=2.5V 85 100 115 µA IV-SOURCE Output Source Current VVS=2V, VCOMV=2.5V 85 100 115 µA VV-HIGH Output High Voltage VVS=2.3V 4.5 V Current Error Amplifier Section Symbol Parameter Test Condition Min. Typ. Max. Unit VIR Reference Voltage 2.475 2.500 2.525 V II-SINK Output Sink Current VCS=3V, VCOMI=2.5V 40 60 80 µA II-SOURCE Output Source Current VCS=0.5V, VCOMI=2.5V 40 60 80 µA VI-HIGH Output High Voltage VCS=0.5V 4.5 V |
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