MM3746 Series

MM3746 series are protection ICs with charger pump and drive high side N channel FET for Lithium-ion and Lithium-polymer secondary battery. This IC is most suitable for the intelligent battery pack with which I communicate data between the battery pack and the system. And MM3746 series has a temperature detection by using a NTC Thermistor, protects the battery pack and system from over temperature.

For one-cell

1. Range and accuracy of detection/release voltage
●Overcharge detection voltage 4.2V to 4.6V, 5mV step Accuracy±15mV
●Overdischarge detection voltage 2.0V to 3.0V, 50mV step Accuracy±40mV
●Discharging overcurrent detection voltage 10mV to 150mV, 1mV step Accuracy±3.0mV ※1
●Charging overcurrent detection voltage -150mV to -10mV, 1mV step Accuracy±3.0mV ※1
●Short detection voltage 40mV to 300mV, 50mV step Accuracy±5.0mV
●0V battery charge inhibition battery voltage 1.3V fixed Accuracy±100mV
●Temperature detection Tdet 55 to 85℃ Accuracy±5.0℃

2. Temperature detection functionSelectable "Enable" or "Disable"
3. 0V battery Charge functionSelectable "Permission" or "Inhibition"
4. Current consumption (Not include NTC bias current)
●Normal mode Typ. 6.0µA, Max. 10.0µA
●Stand-by mode Max. 0.1µA (Overdischarge latch function Enable)
Max. 1.2µA (Overdischarge latch function Disable)

• WLCSP-10A