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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) 15 Page - Linear Technology |
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LTC4216IDE датащи(HTML) 15 Page - Linear Technology |
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15 / 24 page  LTC4216 4216f 15 Figure 9. Normal Power-Up Sequence (with Analog Current Limiting) SENSEP ON TIMER SS GATE VOUT ILOAD FILTER RESET VCC POWER GOOD VFB > 0.6V LOAD CURRENT REGULATING AT 40mV/RSENSE POWER BAD VFB < 0.6V (VGATE – VOUT) > VGS(TH) (VSENSEP – VSENSEN) > 25mV FILTER RAMPS UP WHEN (VSENSEP – VSENSEN) > 25mV OUTPUT IN ANALOG CURRENT LIMIT, (VSENSEP – VSENSEN) = 40mV (VSENSEP – VSENSEN) < 25mV TRACKS SS RAMP IN REGULATION 20µA 60µA 2.4µA VTMR(TH) 2µA VTMR(TH) 2µA 10µA 10µA 1µA CHECK FOR GATE, FILTER, TIMER, SS < 0.2V CHECK FOR GATE, FILTER, TIMER, SS < 0.2V AND FAULT HIGH PLUG-IN CYCLE FIRST TIMING CYCLE POWER-GOOD DELAY SECOND TIMING CYCLE 4216 F09 12 3 4 5 6 7 8 9 10 11 12 16 15 14 13 0.72V 0.4V 0.8V ELECTRONIC CIRCUIT BREAKER ARMED RESET GOES HIGH IN RESET MODE (ON < 0.4V) ON GOES LOW (ON < 0.72V) OUTPUT NO LONGER IN CURRENT LIMIT RESET PULLED LOW DUE TO POWER BAD 2ND TIMING CYCLE CANNOT START WITH OUTPUT IN ANALOG CURRENT LIMIT VFILT(TH) APPLICATIO S I FOR ATIO |
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