MM3855 [MITSUMI]
Thermal protection and control terminal for charge and discharge off mode protection IC;
| 型号： | MM3855 |
| 厂家： | 
MITSUMI ELECTRONICS, CORP. |
| 描述： | Thermal protection and control terminal for charge and discharge off mode protection IC |
| 文件： | 总2页 (文件大小：248K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MM3855 Series
Thermal protection and control terminal for charge and
discharge off mode protection IC
Outline
MM3855 series are protection ICs with thermal protection and
control teminal for charge and discharge off mode for Lithium-ion
and Lithium-polymer rechargeable battery.
system over temperature. In addition, it reduces the current
consumption of system by using charge and dischrge off mode ,
when the system is shutdown.
By using external thermistor, this protects the battery pack and
Features
(Unless otherwise specified, Ta=25°C)
(1) Range and accuracy of detection/release voltage
Overcharge detection voltage............................Vdet1 ..............4.1V to 5.0V............... ±20mV
5mVstep
±20mV(Ta=-20 to +60°C)
Overdischarge detection voltage.......................Vdet2 ..............2.1V to 3.0V............... ±35m
50mV step
±40mV(Ta=-20 to +60°C)
Discharging overcurrent detection voltage1......Vdet3-1...........6mV to 100mV........... ±2.5mV
1mV step
±3.0mV (Ta=-20 to +60°C)*1
Discharging overcurrent detection voltage2......Vdet3-2...........15mV to 100mV......... ±3.5mV
1mV step
±4.0mV (Ta=-20 to +60°C)*1
Charging overcurrent detection voltage.............Vdet4 ..............-6mV to -100mV........ ±2.5mV
1mV step
±3.0mV(Ta=-20 to +60°C)*1
Short detection voltage......................................tShort..............30mV to 200mV......... ±5.0mV
10mV step
±5.5mV (Ta=-20 to +60°C)*1
0V battery charge inhibition battery voltage ......Vst ..................0.9V ........................... ±0.3V
*1 Accuracy of overcurrent detection voltage (Ta=25 °C)
11
10
Vshort
Vdet3-2
9
8
Vdet3-1, Vdet4
7
6
5
4
3
2
1
0
0
10
20
30
40
50
60
70
80
90
100
Overcurrent detection voltage [mV]
(2) Temperature detection function.............................Selectable “Enable” or “Disable”
(3) 0V battery charge function ...................................Selectable “Permission” or “Inhibition”
4) Control terminal for charge and discharge off mode
5) Current consumption.............................................. (Not include NTC bias current)
Normal mode .....................................................Temperature detection function “Enable” 3.0µA typ.
5.0µA max. (Ta=-20 to +85°C)
Temperature detection function “Disable” 2.5µA typ.
4.5µA max. (Ta=-20 to +85°C)
Standby mode ...................................................Overdischarge latch function “Enable” ... 0.1µA max. (Ta=-20 to +60°C)
Overdischarge latch function “Disable”... 0.8µA max. (Ta=-20 to +85°C)
1
MM3855 Series
Pin assignment
SSON-8F
SSON-8G
Pin no.
Symbol
CNT
VM
Function
(Top view)
1
2
3
4
5
6
7
8
Control terminal for charge and discharge FET
Input terminal for charger negative voltage
Control terminal for charge FET
ꢁ
;/
*5;
=4
ꢅ
ꢄ
ꢆ
ꢇ
COUT
DOUT
VDD
VSS
CS
ꢀ
ꢂ
ꢃ
*:
Control terminal for discharge FET
=::
=++
*6<;
+6<;
Input terminal for negative power supply voltage
Input terminal for positive power supply voltage
Input terminal for overcurrent detection
Input terminal for temperature detection
TH
LINE UP
Model
Vdet1
V
Vdet2 Vdet3-1 Vdet3-2
Vdet4 Vshort1
RdetTH
---
V
mV
mV
mV
V
MM3855AJ1
MM3855AL1
MM3855AL2
MM3855EN5
MM3855EN7
4.475
4.475
4.475
4.470
4.450
2.400
2.500
2.500
2.465
2.600
35.0
20.5
22.5
13.0
36.0
50.000
-35.0
-26.5
-21.0
-15.0
-21.0
100.0
70.0
100.0
50.0
90.0
90kΩ
Disable Disable Disable Enable Permission Enable (A)
29.500
No function Disable Disable Disable Enable Permission Disable (B)
No function Disable Disable Disable Enable Permission Disable (C)
No function
No function
No function
90kΩ
48kΩ
Enable Enable Disable Enable Permission Enable (D)
Enable Enable Disable Enable Permission Enable (E)
Delay time *1
tVdet1 tVdet2 tVdet3-1
tVdet3-2
msec
tVdet4 tShort1 tCDGdet tRdetTH
sec
msec
64
msec
4096
4096
16
msec
16
16
16
8
µsec
280
280
300
250
280
msec
48
msec
512
A
B
C
D
E
1.024
1.024
1.024
1.024
1.024
16
64
16
48
No function
No function
512
20
No function
No function
No function
48
128
2048
8
48
2048
8
48
64
*Please inquire to us, if you need another spec.
MITSUMI ELECTRIC CO., LTD.
2
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