MM3725/MM3726 Series

The MM3725/MM3726 series are protection IC using high voltage CMOS process for overcharge, overdischarge andovercurrent protection of the rechargeable Lithium-ion or Lithium-polymer battery. The overcharge, overdischarge,discharging overcurrent, charging overcurrent, and short protection of the rechargeable one-cell Lithium-ion or Lithium-polymer battery can be detected. Each of these IC composed of four voltage detectors, short detection circuit, referencevoltage sources, oscillator, counter circuit and logical circuits.

For one-cell

1. Range and accuracy of detection/release voltage
●Overcharge detection voltage 3.6V to 5.0V, 5mV step Accuracy±20mV
●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 +50/-35mV (In case Vdet2=Vrel2)
+90/-65mV (In case Vdet2≠Vrel2)
●Discharging overcurrent detection voltage 20mV to 300mV, 1mV step Accuracy±5mV
●Charging overcurrent detection voltage -300mV to -20mV, 1mV step Accuracy±5mV
●Short detection voltage 70mV to 350mV, 1mV step Accuracy±8%
●0V battery charge inhibition battery voltage 1.3V to 1.8V/0.1V step Accuracy±100mV
0.9V Accuracy±300mV

2. Range of detection delay time
●Overcharge detection delay time 256ms to 4.6s
●Overdischarge detection delay time 8ms to 256ms
●Discharging overcurrent detection delay time 8ms to 256ms
●Charging overcurrent detection delay time 6ms to 64ms
●Short detection delay time 250µs to 400µs

3. 0V battery Charge functionSelectable "Permission" or "Inhibition"

4. 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)

Package

• SSON-6J
• SSON-6M
• SON-6C