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AD-HSB(X)-7 数据表(PDF) 8 Page - Diodes Incorporated |
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AD-HSB(X)-7 数据表(HTML) 8 Page - Diodes Incorporated |
8 / 17 page AP9214L Document number: DS38413 Rev. 1 - 2 8 of 17 www.diodes.com December 2015 © Diodes Incorporated AP9214L Application Information Operation Mode 1. Normal Status The AP9214L 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 AP9214L 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 AP9214L 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 AP9214L will release from overcharge status. When VM pin voltage is equal or more than VDOC and battery voltage falls below VCU, the AP9214L 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 AP9214L 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 AP9214L 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 AP9214L will release from overdischarge status. If VM pin voltage to VSS pin voltage is higher than typical -0.7V, the AP9214L will release from overdischarge status until the battery voltage rises over VDU. For auto-wake-up version AP9214LA, the device recovers to normal status from overdischarge status if either of these two conditions are satisfied: If charger is connected: the AP9214LA overdischarge status is released in the same way as described above in AP9214L 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 AP9214L 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 AP9214L 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 AP9214L will release from discharge overcurrent or short current status. 5. 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 and the detection continues for the charge overcurrent detection delay time (tCOC) or longer, the AP9214L turns off the charging MOSFET to stop charging. 6. 0V Battery Charging Function (Optional) This function is available as an option and can be factory set internally. The AP9214L 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.) |
类似零件编号 - AD-HSB(X)-7 |
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类似说明 - AD-HSB(X)-7 |
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