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FA5547 Datasheet(PDF) 7 Page - Fuji Electric |
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FA5547 Datasheet(HTML) 7 Page - Fuji Electric |
7 / 27 page AN-027E Rev.0.4 April -2011 7 Fuji Electric Co., Ltd. http://www.fujielectric.co.jp/products/semiconductor/ FA5546/47 (2) Recommended operating condition Item Symbol MIN TYP MAX Unit VCC Power supply voltage VCC 11 18 22 V Direct voltage VVH(DC) 100 450 V(DC) High input voltage Half-wave rectification VVH(AC1) 80 288 V(AC) Full-wave rectification VVH(AC2) 80 288 V(AC) VH pin Resistance RVH 2 --- 10 k ohm LAT pin capacity CLAT 0.22 1.0 2.2 uF VCC pin capacity CVCC 10 33 100 uF Operating ambient temperature Ta -30 85 ℃ (3) Electric characteristics (in case nothing specified : Tj=25℃, VCC=18V) Switching oscillator section (FB pin) Item Symbol Conditions MIN TYP MAX Unit Oscillation frequency Fosc VFB=3V 54 60 66 kHz Voltage stability Fdv VCC:11V to 24V -2 - +2 % Temperature stability *1 Fdt Tj= -30 to 125℃ -5 - +5 % FB pin threshold voltage for light load mode Vfbm 0.95 1.15 1.35 V Oscillation frequency reduction ratio kf Δf/ΔVfb 200 240 280 kHz/V Minimum oscillation frequency Fmin 0.22 0.34 0.50 kHz External latch shutdown signal (LAT pin) Item Symbol Conditions MIN TYP MAX Unit Source current of LAT pin Ilat LAT=1.1V Charge period -80 -70 -60 uA Latch-off level VthLAT 1.00 1.05 1.10 V Latch-off delay timer *1 TdLAT 50 65 80 us Pulse width modulation section (FB pin) Item Symbol Conditions MIN TYP MAX Unit Maximum duty cycle Dmax FB=4.5V 75 80 85 % Minimum duty cycle Dmin FB=0V - - 0 % Input threshold voltage VthFB0 DUTY=0% 340 400 460 mV FB pin source current Ifb0 VFB=0V -300 -250 -200 uA |
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