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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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L6924U датащи(PDF) 28 Page - STMicroelectronics |
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L6924U датащи(HTML) 28 Page - STMicroelectronics |
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28 / 37 page  Application information: monitoring and protection L6924U 28/37 Doc ID 14716 Rev 2 8.4 Shutdown The L6924U has a shutdown pin; when the pin is connected to GND, the device is operating. When the pin is left floating, the device enters the shutdown mode, the consumption from the input is dramatically reduced to 60 µA (typ.). In this condition, VREF is turned OFF. Figure 21. ST1 and ST2 connection with LEDs or microcontroller Table 6. Status LEDs Indications Charge condition Description ST1 ST2 Charge in progress When the device is in pre-charge or fast- charge status ON OFF Charge done When the charging current goes below the IENDTH OFF ON Stand by mode When the input voltage goes under VBAT + 50 mV OFF OFF Bad battery temperature When the voltage on the TH pin is out of the programmable window, in accordance with the NTC or PTC thermistor ON ON Battery absent When the battery pack is removed ON ON Over time When TMAXCH or TMAXPRECH expires ON ON |
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