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L6924UTR Datenblatt(PDF) 24 Page - STMicroelectronics

Teilenummer L6924UTR
Bauteilbeschribung  USB compatible battery charger system with integrated power switch for Li-Ion/Li-Polymer
PDF  37 Pages
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Hersteller  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6924UTR Datenblatt(HTML) 24 Page - STMicroelectronics

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Application information: monitoring and protection
L6924U
24/37
Doc ID 14716 Rev 2
When the voltage (and thus, the temperature), returns to the window range, the device re-
starts the charging process. Moreover, there is a hysteresis for both the upper and lower
thresholds, as shown in Figure 18.
Note:
TBAT = OK when the battery temperature is between 0 °C and 50 °C
When the TH pin voltage rises and exceeds the VMINTH = 50 % of VREF (900 mV typ), the
L6924U stops the charge, and indicates a fault by the status pins. The device re-starts to
Figure 17.
Battery temperature control flow chart
Figure 18.
Voltage window with hysteresis on TH
Figure 19.
Pin connection
VMINTH
VMAXTH
VMINTH_HYS
VMAXTH_HYS
900mV
780mV
225mV
248mV
Voltage
VariationonTHpin
Charge disable
Charge enable



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