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
Overcharge detection voltage ............................Vdet1 ................................................. 3.6V to 5.0V ................... ±20m
5mVstep ........................ ±25mV
(Ta=-20 to 60°C)
Overcharge release voltage ...............................Vrel1 ................................................... Vdet1-0.2V to Vdet1 ...... ±30mV
5mV step
Overdischarge detection voltage .......................Vdet2 ................................................. 2.0V to 3.0V ................... ±35m
50mV step
Overdischarge release voltage ...........................Vrel2 ................................................... 2.0V to 3.0V ................... +50 / -35mV
(In case Vdet2=Vrel2)
50mV step ..................... +90 / -65mV
(IncaseVdet2≠Vrel2)
Discharging overcurrent detection voltage ........Vdet3 ................................................. 20mV to 300mV ............. ±5mV
1mV step
Charging overcurrent detection voltage .............Vdet4 ................................................. -300mV to -20mV .......... ±5mV
1mV step
Short detection voltage ......................................Vshort ................................................ 40mV to 350mV ............. ±8%
1mV step
0V battery charge inhibition battery voltage ......Vst ..................................................... 1.3V to 1.8V/0.1V step ... ±100mV
0.9V ............................... ±300mV
(2) Range of detection delay time
Overcharge detection delay time .......................tVdet1 ................................................ 256ms to 4.6s
Overdischarge detection delay time ..................tVdet2 ................................................ 8ms to 256ms
Discharging overcurrent detection delay time ...tVdet3 ................................................ 8ms to 256ms
Charging overcurrent detection delay time ........tVdet4 ................................................ 6ms to 64ms
Short detection delay time .................................tVshort ............................................... 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 “Prohibition”
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°C
Operation temperature .......................................–40 to +85°C
Outline
Features (Unlessotherwisespecied,Ta=25°C)
1
MM3725/MM3726 Series
Pin assignment
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
SSON-6J SON-6C
(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
A 1.024 16.00 20.00 1.00 12.00 1.00 8.00 1.00 300
B 1.024 16.00 32.00 1.00 16.00 1.00 4.00 1.00 280
C 1.024 16.00 64.00 1.00 16.00 1.00 8.00 1.00 280
D 1.024 16.00 64.00 1.00 8.00 1.00 4.00 1.00 280
E 1.024 16.00 32.00 1.00 8.00 1.00 8.00 1.00 280
F 1.024 16.00 64.00 1.00 16.00 1.00 16.00 1.00 280
G 1.024 16.00 64.00 1.00 8.00 1.00 8.00 1.00 280
H 1.024 16.00 64.00 1.00 32.00 1.00 16.00 1.00 280
I 1.024 16.00 32.00 1.00 16.00 1.00 16.00 1.00 280
J 1.024 16.00 32.00 1.00 16.00 1.00 16.00 1.00 530
K 1.024 16.00 128.00 1.00 8.00 1.00 8.00 1.00 280
L 1.024 16.00 20.00 1.00 12.00 1.00 8.00 1.00 280
M 1.024 16.00 20.00 1.00 12.00 1.00 8.00 1.00 250
N 1.024 16.00 32.00 1.00 12.00 1.00 12.00 1.00 280
O 1.024 16.00 20.00 1.00 10.00 1.00 8.00 1.00 300
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
MM3725AC2YRE SON-6C 0.9 Disable Disable Disable Enable Enable 4.475 4.275 2.500 2.900 0.045 -0.040 0.100 A
MM3725AC7YLE SON-6C 1.2 Disable Disable Disable Enable Enable 4.550 4.250 2.300 2.500 0.025 -0.030 0.075 J
MM3725AC9YRE SON-6C 0.9 Disable Disable Disable Enable Enable 4.475 4.275 2.500 2.900 0.055 -0.045 0.100 L
MM3725ACCYLE SON-6C 0.9 Disable Disable Disable Enable Enable 4.475 4.275 2.500 2.900 0.020 -0.020 0.070 F
MM3725AM1YRE SON-6C 0.9 Disable Disable Disable Enable Enable 4.475 4.275 2.500 2.900 0.065 -0.050 0.190 B
MM3725AM4YRE SON-6C 0.9 Disable Disable Disable Enable Enable 4.425 4.225 2.500 2.800 0.025 -0.025 0.075 E
MM3725AM5YRE SON-6C 0.9 Disable Disable Disable Enable Enable 4.475 4.275 2.500 2.900 0.045 -0.040 0.095 F
MM3725AMHYLE SON-6C 0.9 Disable Disable Disable Enable Enable 4.475 4.275 2.500 2.800 0.024 -0.024 0.070 O
MM3725AN1YRE SON-6C Permission Disable Disable Disable Enable Enable 4.425 4.225 2.500 2.900 0.080 -0.080 0.230 G
MM3725ANBYRE SON-6C Permission Disable Disable Disable Enable Enable 4.475 4.275 2.500 2.800 0.060 -0.050 0.160 E
MM3725AR1YLE SON-6C Permission Disable Disable Disable Enable Enable 4.475 4.275 2.500 2.900 0.055 -0.055 0.150 M
MM3725CM2YLE SON-6C 0.9 Disable Enable Disable Enable - 4.470 4.270 2.500 2.500 0.025 -0.025 0.100 N
MM3725CM2RLE SSON-6J 0.9 Disable Enable Disable Enable - 4.470 4.270 2.500 2.500 0.025 -0.025 0.100 N
MM3725CM3YRE SON-6C 0.9 Disable Enable Disable Enable - 4.275 4.075 2.500 2.500 0.025 -0.020 0.080 M
MM3725CN2YRE SON-6C Permission Disable Enable Disable Enable - 4.280 4.080 3.000 3.000 0.030 -0.030 0.205 E
MM3726AM6YRE SON-6C 0.9 Disable Disable Disable Enable Enable 4.475 4.275 2.400 2.800 0.150 -0.125 0.350 G
MM3726AM7YRE SON-6C 0.9 Disable Disable Disable Enable Enable 4.550 4.250 2.000 2.400 0.075 -0.055 0.250 C
MM3726AN2YLE SON-6C Permission Disable Disable Disable Enable Enable 4.425 4.225 2.500 2.800 0.055 -0.055 0.255 G
MM3726ANAYLE SON-6C Permission Disable Disable Disable Enable Enable 4.475 4.275 2.500 2.800 0.055 -0.055 0.255 G
VDD
V-
VSS
DOUT
N.C.
COUT
5
6
4
2
1
3
=++
=
=::
+6<;
5*
*6<;
2