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 Lithium-Ion Battery ICs
ICS
1cell Li-ion/Li-polymer battery protection IC
MM3721 Series
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[Outline]
MM3731 series are Li-ion battery protection IC and detect charge current / discharge current with high precision by current sensing resistor (Rsns). MM3731 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℃)

1) Range and accuracy of detection voltage

●Overcharge detection voltage 3.6V to 5.0V, 5mV step Accuracy±25mV
(Ta=-20℃ to +60℃)
●Overcharge release voltage Vdet1-0.2V to Vdet1, 5mV step Accuracy±30mV
●Overdischarge detection voltage 2.0V to 3.0V, 50mV step Accuracy±35mV
●Overdischarge release voltage 2.0V to 3.0V, 50mV step Accuracy+65/-35mV
(In case Vdet2=Vrel2)
Accuracy+90/-65mV
(In case Vdet2≠Vrel2)
●Discharging overcurrent detection voltage 1 20mV to 150mV, 1mV step Accuracy±ΔV (Note1)
●Discharging overcurrent detection voltage 2 Vdet3-1 + 10mV to 200mV, 1mV step Accuracy±ΔV (Note1)
●Charging overcurrent detection voltage -150mV to -20mV, 1mV step Accuracy±ΔV (Note1)
●Short detection voltage 0.4V to 0.9V, 0.05V step Accuracy±100mV
●0V battery charge inhibition battery voltage 1.3V to 1.8V / 0.1V step
0.9V
Accuracy±100mV
Accuracy±300mV

Note1 : Current detection voltage Accuracy



2) Delay time setting

●Overcharge detection delay time 256ms to 4.6s
●Overdischarge detection delay time 8ms to 256ms
●Discharging overcurrent 1 detection delay time 8ms to 7168ms
●Discharging overcurrent 2 detection delay time 6ms to 64ms (tVdet3-2 < tVdet3-1)
●Charging overcurrent detection delay time 6ms to 64ms
●Short detection delay time 250µs to 400µs

3) Current consumption

●Normal mode Typ. 3.0µA, Max. 6.0µA   
●Stand-by mode    Max. 0.1µA(In case Overdischarge latch function Enable.)
Max. 0.6µA(In case Overdischarge latch function Disable.)

4) 0V battery Charge function      Selectable"Permission" or "inhibition"


5) Absolute maximum ratings

●VDD pin VSS-0.3V to 12V
●COUT pin and V- pin VDD-28V to VDD+0.3V
●DOUT pin and CS pin VSS-0.3V to VDD+0.3V
●Storage temperature -55℃ to +125℃
●Operation temperature    -40℃ to + 85℃


[Package]


[Pin Assignment]

SSON-6J

SON-6C

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[NOTE]
-Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
-The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
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