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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LTC4216IDE датащи(PDF) 14 Page - Linear Technology |
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LTC4216IDE датащи(HTML) 14 Page - Linear Technology |
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14 / 24 page  LTC4216 4216f 14 Figure 8. Normal Power-Up/Power-Down Sequence capacitors. A second timing cycle starts at time point 11 when the FB pin voltage exceeds 0.6V and the voltage across the sense resistor drops below 25mV. ⎯R⎯E⎯S⎯E⎯T goes high at the end of the second timing cycle (time point 12) when TIMER reaches the VTMR(TH) threshold. SENSEP ON TIMER SS GATE VOUT RESET VCC POWER GOOD VFB > 0.6V POWER BAD VFB < 0.6V (VGATE – VOUT) > VGS(TH) VTMR(TH) VTMR(TH) TRACKS SS RAMP 20µA 2µA 2µA 0.72V 0.4V 0.8V 10µA 10µA 1µA 12 3 4 5 6 7 8 9 CHECK FOR GATE, FILTER, TIMER, SS < 0.2V CHECK FOR GATE, FILTER, TIMER, SS < 0.2V AND FAULT HIGH 10 11 12 13 PLUG-IN CYCLE FIRST TIMING CYCLE POWER-GOOD DELAY SECOND TIMING CYCLE 4216 F08 START GATE RAMP ELECTRONIC CIRCUIT BREAKER ARMED RESET GOES HIGH IN RESET MODE ON GOES LOW RESET PULLED LOW DUE TO POWER BAD START 2ND TIMING CYCLE (CHECK TIMER < 0.2V AND FAULT HIGH) APPLICATIO S I FOR ATIO |
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