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STBC21 датащи(PDF) 16 Page - STMicroelectronics |
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STBC21 датащи(HTML) 16 Page - STMicroelectronics |
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16 / 54 page ![]() Detailed description STBC21 16/54 Doc ID 023256 Rev 1 Figure 5. Battery connection detection flowcharts 5.3 Start of charge The STBC21 start of charge is subject to three variables: input voltage, battery connection and battery temperature. The detection of these variables is filtered with different deglitching as reported in Table 7: AM10416v 1 Ba ery connec on detec on at the End of Charge Insert ba ery Pin TEMP connected NO Force IDETECT to ba ery and start TDETECT Start charging YES Wait for 400msec (TWAIT) VBAT>3.9V & TDETECT<300ms NO Sink ISINK from ba ery and start TSINK VBAT<3.0V & T SINK<100ms YES Ba ery alarm YES NO TDETECT ≥300ms YES NO VBAT>3.9V YES NO Start charging Ba ery removed Ba ery unistalla on LED SET YES NO END Sink ISINK from ba ery and start TSINK VBAT<3.0V & TSINK<100ms YES Termina on Ba ery alarm NO Start Termina on Ba ery removed Ba ery unistalla on LED SET YES NO END Ba ery connec on detec on at Beginning of Charge |
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