MM3725 MITSUMI | Alldatasheet

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Technical content

1 cell lithium–ion/lithium–polymer battery protection IC 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. (1) Range and accuracy of detection/release voltage (Ta=-20 to 60°C) 5mV step 50mV step (In case Vdet2=Vrel2) (In case Vdet2≠Vrel2) 1mV step 1mV step 1mV step (2) Range of detection delay time (3) Current consumption Max 0.6µA (In case Overdischarge latch function Disable) 5) Absolute maximum ratings Outline Features (Unless otherwise specified, Ta=25°C)

Pin no. Symbol Function 1 N.C. None connection

2 COUT Charge FET control terminal

3 DOUT Discharge FET control terminal

4 VSS Negative power supply voltage input terminal

5 VDD Positive power supply voltage input terminal

6 V- Current detection terminal

(Top view) (Top view) *1 Delay time *Please inquire to us, if you need another spec. LINE UP MITSUMI ELECTRIC CO., LTD. tVdet1 tVrel1 tVdet2 tVrel2 tVdet3 tVrel3 tVdet4 tVrel4 tshort s ms ms ms ms ms ms ms µs MODEL Package 0V charge Protection mode latch function Hys-Cancel Overcharge detection voltage Overcharge release voltage Overdischarge detection voltage Overdischarge release voltage Discharging overcurrent detection voltage Charging overcurrent detection voltage Short detection voltage Delay time *1 Overcharge Overdischarge Discharge overcurrent Overcharge Overdischarge Vdet1 Vrel1 Vdet2 Vrel2 Vdet3 Vdet4 Vshort V V V V V V V VDD VSSDOUT N.C. COUT 5 =++ =::+6<; *6<;