MITSUMI
1cell Li-ion/Li-polymer battery protection IC MM3724 Series
1cell Li-ion/Li-polymer battery protection IC
MM3724 Series
Outline
The MM3724 series are protection IC using high voltage CMOS process for overcharge, overdischarge
and overcurrent 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, reference voltage sources, oscillator, counter circuit and logical circuits.
(Unless otherwise specified, Topr=+25°C)
Features
(1) Range and accuracy of detection voltage
Overcharge detection voltage
3.6V to 5.0V, 5mV step
Accuracy 20mV
Accuracy 25mV (Topr=−20°C to +60°C)
Accuracy 30mV
Overcharge release voltage
Overdischarge detection voltage
Overdischarge release voltage
Vdet1−0.2V to Vdet1, 5mV step
2.0V to 3.0V, 50mV step
Accuracy 35mV
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
Charging overcurrent detection voltage
Short detection voltage
20mV to 300mV, 1mV step
−300mV to −20mV, 1mV step
40mV to 350mV, 1mV step
1.3V to 1.8V / 0.1V step
0.9V
Accuracy
Accuracy
(Note1)
(Note1)
Accuracy 8ꢀ
0V battery charge inhibition battery voltage
Accuracy 100mV
Accuracy 300mV
Note1 : Current detection voltage Accuracy
Vdet3, Vdet4 Accuracy
12
10
8
6
4
20
40
60
80
100
120
140
Vdet3, Vdet4 (mV)
(2) Delay time setting
Overcharge detection delay time
256ms to 4.6s
8ms to 256ms
8ms to 256ms
6ms to 64ms
250µs to 400µs
Overdischarge detection delay time
Discharging overcurrent detection delay time
Charging overcurrent detection delay time
Short detection delay time
(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
VDD−28V to VDD+0.3V
VSS−0.3V to VDD+0.3V
−55°C to +125°C
COUT pin and V− pin
DOUT pin
Storage temperature
Operation temperature
−40°C to + 85°C
• 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.