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AP9211S-AI-HAC-7 Datasheet(PDF) 8 Page - Diodes Incorporated

Part # AP9211S-AI-HAC-7
Description  SINGLE CHIP SOLUTION FOR 1-CELL Li BATTERY PACK
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Manufacturer  DIODES [Diodes Incorporated]
Direct Link  http://www.diodes.com
Logo DIODES - Diodes Incorporated

AP9211S-AI-HAC-7 Datasheet(HTML) 8 Page - Diodes Incorporated

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AP9211
Document number: DS37596 Rev. 2 - 2
8 of 17
www.diodes.com
December 2015
© Diodes Incorporated
AP9211
Application Information
Operation Mode
1. Normal Status
The AP9211 monitors the battery voltage between the VDD pin and VSS pin as well as the voltage difference between the VM pin and VSS pin to
control battery charging and discharging. When the battery voltage is between overdischarge detection voltage (VDL) and overcharge detection
voltage (VCU) as well as the VM pin voltage is between the charge overcurrent detection voltage (VCOC) and discharge overcurrent detection
voltage (VDOC), the AP9211 will turn on discharging and charging MOSFET. In these conditions, the battery can charge and discharge freely. Also,
RVMD does not connect to VDD pin and RVMS does not connect to VSS pin in this status.
2. Overcharge Status
If the battery voltage is more than VCU during charging status for the overcharge detection delay time (tCU) or longer, the AP9211 turns off the
charging MOSFET to stop charging. RVMD and RVMS are not connected in overcharge status.
When VM pin voltage is lower than VDOC and battery voltage falls below VCL, the AP9211 will release from overcharge status.
When VM pin voltage is equal or more than VDOC and battery voltage falls below VCU, the AP9211 will release from overcharge status.
3. Overdischarge Status
If the battery voltage is less than VDL during discharging status for the overdischarge detection delay time (tDL) or longer, the AP9211 turns off the
discharging MOSFET to stop discharging. In overdischarge status, RVMD is connected to VDD and VM pin voltage is pulled up to VDD by RVMD, but
RVMS is not connected. For power-down mode version, the AP9211 recovers normal status from overdischarge status only by charging the battery
through the charger.
When VM pin voltage to VSS pin voltage is less than typical -0.7V and the battery voltage rises over VDL, the AP9211 will release from
overdischarge status. If VM pin voltage to VSS pin voltage is higher than typical -0.7V, the AP9211 will release from overdischarge status until the
battery voltage rises over VDU.
For auto-wake-up version AP9211SA, the device recovers to normal status from overdischarge status if either of these two conditions are satisfied:
If charger is connected:
the AP9211SA overdischarge status is released in the same way as described above in AP9211S Overdischarge Status
section.
If no charger is connected:
1) The battery voltage reaches the overdischarge release voltage (VDU) or higher;
2) Maintains continuous time more than overdischarge release delay time tDLR.
4. Discharge Overcurrent and Short Current Status
When battery is in discharge overcurrent status, if the voltage of the VM pin to VSS pin is equal or more than VDOC to VSHORT and detection lasts for
the discharge overcurrent detection delay time (tDOC) or longer, the AP9211 turns off the discharging MOSFET to stop discharging.
When the battery is in short current status, if the voltage of the VM pin to VSS pin is equal to or more than VSHORT, and the detection lasts for the
short current detection delay time or longer, the AP9211 turns off the discharge MOSFET to stop discharging.
In discharge overcurrent or short current status, RVMS is connected to VSS but RVMD is not connected. The voltage of VM pin is almost equal to VDD
as long as the load is connected. When the load is disconnected, the voltage of VM pin will become almost equal to VSS (due to RVMS being
connected) and then the AP9211 will release from discharge overcurrent or short current status.
5. Charge Overcurrent Status
When the battery is in charge current status, if the voltage of the VM pin to VSS pin is equal to or less than VCOC and the detection continues for the
charge overcurrent detection delay time (tCOC) or longer, the AP9211 turns off the charging MOSFET to stop charging.
6. 0V Battery Charging Function (Option)
This function is available as an option and can be factory set internally. AP9211 has this function built in.
0V charging function permits charger to recharge the battery whose voltage is 0V due to self-discharge. If 0V charging function is not present, the
device will prevent charger to recharge the battery whose voltage is 0V due to self-discharge. (If a device without 0V charging function is needed,
please contact Diodes sales team)


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