AP9101C datasheet(7/18 Pages) DIODES

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AP9101C

Document number: DS37771 Rev. 3 - 2

7 of 18

www.diodes.com

December 2015

AP9101C

Operation Description

Operation Mode

Normal Status

The AP9101C 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 by CO and DO Pins. 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 CO and DO Pin of the AP9101C will output high level and turn on charge and discharge MOSFETs. In

these conditions, the battery can charge and discharge freely. Also, RVMD and RVMS do not connect to VDD and VSS Pins in this status.

Overcharge Status

If the battery voltage is more than VCU during charging status for the overcharge detection delay time (tCU) or longer, the AP9101C turns off the charge

MOSFET by setting low level to CO Pin 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 AP9101C will release from overcharge status.

When VM Pin voltage is equal to or more than VDOC and battery voltage falls below VCU, the AP9101C will release from overcharge status.

Overdischarge Status

If the battery voltage is less than VDL during discharging status for the overdischarge detection delay time (tDL) or longer, the AP9101C turns off the

discharge MOSFET by setting low level to DO Pin 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 stand-by version, the AP9101C 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 AP9101C will release from overdischarge

status. If VM Pin voltage to VSS Pin voltage is higher than typical -0.7V, the AP9101C will release from overdischarge status until the battery voltage rises

over VDU.

For auto-wake-up version AP9101CA, the device recovers to normal status from overdischarge status if either of these two conditions are satisfied.

If charger is connected:

the AP9101CA overdischarge status is released in the same way as described above in AP9101C 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.

Discharge Overcurrent and Short Current Status

When the battery is in discharge overcurrent status, if the voltage of the VM Pin to VSS Pin is equal or more than VDOC to VSHORT. for the

overdischarge current detection delay time (tDOC) or longer, the AP9101C turns off the discharge MOSFET by setting low level to DO Pin 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, for the short current detection

delay time or longer, the AP9101C turns off the discharge MOSFET by setting low level to DO pin 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 AP9101C will release from discharge overcurrent or short current status.

Charge Overcurrent Status

When the battery is in charge overcurrent status, if the voltage of the VM Pin to VSS Pin is equal to or less than VCOC for the charge overcurrent

detection delay time (tCOC) or longer, the AP9101C turns off the charge MOSFET by setting low level to CO Pin to stop charging.

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