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TS494 Scheda tecnica(PDF) 4 Page - Taiwan Semiconductor Company, Ltd |
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TS494 Scheda tecnica(HTML) 4 Page - Taiwan Semiconductor Company, Ltd |
4 / 7 page TS494 4-7 2003/12 rev. A Electrical Characteristics (continues) PWM COMPARATOR SECTION Parameter Test Conditions* Min Typ Max Unit Input threshold voltage (pin 3) Zero duty cycle -- 4.0 4.5 V Input sink current (pin 3) V (pin 3)=0.7V 0.3 0.7 -- mA TOTAL DEVICE Vcc=15V -- 6.0 10 Standby supply current pin 6 at Vref, all other inputs and outputs open Vcc=40V -- 9.0 15 Average supply current Vi (pin4)= 2V, See Figure 1 -- 7.5 -- mA SWITCHING CHARACTERISTICS Output voltage rise time -- 100 200 Output voltage fall time Common-emitter configuration, See Figure 3 -- 25 100 Output voltage rise time -- 100 200 Output voltage fall time Emitter-follower configuration, See Figure 4 -- 40 100 ns UNDERVOLTAGE LOCKOUT SECTION Turn-on Threshold Vcc increasing Iref = 1.0mA 5.5 6.43 7.0 V Remark: All typical value except for temperature coefficient are at Ta= 25 oC For conditions shown as Min or Max, use the appropriate value specified under recommended operating conditions. All typical values except for parameter changes with temperature are at Ta= 25 oC Duration of the short-circuit should not exceed one second Standard deviation is a measure of the statistical distribution about the mean as derived from the formula 2 1 1 2 1 ) ( ⎥ ⎥ ⎦ ⎤ ⎢ ⎢ ⎣ ⎡ − − = ∑ = N n n N x x σ Temperature coefficient of timing capacitor and timing resistor not taken into account |
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