MM3721

MITSUMI 1cell Li-ion/Li-polymer battery protection IC MM3721 series 1cell Li-ion/Li-polymer battery protection IC MM3721 series Outline MM3721 series are Li-ion battery protection IC and detect charge current/discharge current with high precision by current sensing resistor (Rsns). MM3721 have two step discharge overcurrent detection. And system is protected appropriately in the next 2 state, Normal discharge mode and large current discharge mode. Features (Unless otherwise specified, Topr=+25°C) (1) Range and accuracy of detection voltage Overcharge detection voltage 3.6V to 5.0V, 5mV step Overcharge release voltage Vdet1−0.2V to Vdet1, 5mV step Overdischarge detection voltage 2.0V to 3.0V, 50mV step Overdischarge release voltage 2.0V to 3.0V, 50mV step Discharging overcurrent detection voltage 1 20mV to 150mV, 1mV step Discharging overcurrent detection voltage 2 Vdet3-1+10mV to 200mV, 1mV step Charging overcurrent detection voltage −150mV to −20mV, 1mV step ...