MM1177 [MITSUMI]
Charge and discharge control for coin-type lithium batteries and manganese dioxide lithium batteries; 充电和放电控制的硬币型锂电池，二氧化锰锂电池
| 型号： | MM1177 |
| 厂家： | 
MITSUMI ELECTRONICS, CORP. |
| 描述： | Charge and discharge control for coin-type lithium batteries and manganese dioxide lithium batteries |
| 文件： | 总3页 (文件大小：79K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Charge and discharge control for coin-type lithium batteries and manganese dioxide lithium batteries MM1177
MITSUMI
Charge and discharge control for coin-type lithium batteries and
manganese dioxide lithium batteries
Monolithic IC MM1177
Outline
This IC controls constant current charging and excess discharge for coin-shaped vanadium lithium batteries
and manganese dioxide batteries. It performs constant current charging, stops charging at set voltages, and
prevents excess discharging. When the voltage falls bellow a set level, it prohibits discharges and reduces IC
current consumption nearly to zero.
Features
During charging
1. Input voltage range
4.0~15.0V
2. Current consumption (during constant current charging)
3. Current consumption (when charging is off)
4. Charging current
100µA typ.
30µA typ.
4.5mA typ.
5. Charging shut-off voltage (Ta=-20~+70°C)
1177AF : 3.275V 75mV
1177BF : 3.0V 70mV
During discharging
1. Discharging shut-off voltage
1.75V 0.15V
5µA typ.
2. Current consumption (IL-100µA, VBATT=3V)
3. Leak current during discharge shut-off
0.1µA max.
2.92V typ.
4. Voltage drop between battery and output (IL=100µA, VBATT=3V)
Package
SOP-8C (MM1177AF, MM1177BF)
Applications
1. coin-shaped vanadium lithium batteries
2. Monitors and controls charging and discharging for and manganese dioxide batteries.
Pin Assignment
1
2
3
4
5
6
7
8
N.C
GND
NC
8
1
7
2
6
3
5
4
OUT2
OUT1
BATT
N.C
-
SOP 8C
VIN
Charge and discharge control for coin-type lithium batteries and manganese dioxide lithium batteries MM1177
MITSUMI
Block Diagram
Absolute Maximum Ratings
Item
Symbol
TSTG
Rating
Units
°C
Storage temperature
Operating temperature
input voltage
-
40~+125
TOPR
-20~+70
°C
VIN max.
VBAT max.
PD
18
V
Charging voltage
3.5
V
Allowable power dissipation
Charging current
300
10
mW
mA
mA
IBATT
Discharging current
IL
1
(Unless otherwise specified Ta=25°C, VIN=12.0V)
Electrical Characteristics
Item
Symbol
Measurement Conditions
Min Typ. Max. Units
Input voltage operation range
Current consumption 1
Current consumption 2
Charging current (limiter current)
VINOPR
IIN1
4.0
15.0
V
during charging (constant voltage charge)
charging off
100 180
µA
µA
IIN2
30
45
IBATT
VIN=4V~15V, VBATT=2V
4.0
4.5
5.0 mA
Limiter mode off
1177AF
1177BF
1177AF
1177BF
3.00
2.70
VICOFF
IBATT=4mA
V
Charging OFF voltage
3.20 3.275 3.35
2.93 3.00 3.07
V
V
VCHOFF
IBA1
IBATT=0mA, Ta=-20~+70°C
Current consumption (battery)
IL=100µA, VBATT=3V
VIN=0V or open
VBATT=3.35V
5
8
µA
Leak current when discharging
is prohibited
IBA2
0.1
µA
V
Voltage when discharging is prohibited
VOOFF
VCEOUT
VOUT2
after VIN=0FF
1.60 1.75 1.90
75
2.85 2.92 3.00
Voltage drop between battery
and output
IL=100µA, VBATT=3V
100 mV
OUT2 pin voltage
VCELL=3V
V
Note : Do not connect the OUT2 pin to the load; it does not have current supply capability.
To delay discharge prohibition, or suppress discharge prohibition caused by noise, connect a capacitor
between the OUT2 pin and GND.
Charge and discharge control for coin-type lithium batteries and manganese dioxide lithium batteries MM1177
MITSUMI
Operation Outline
The constant current, constant voltage charging control charges at a constant current of 4.5mA, until battery
capacity reaches 0%~90%. It then switches to constant voltage control and sets the charge current to "0"
when 100% charged. Output impedance is set at about 50Ω so charge current gradually drops and eventually
reaches 0mA. The charging current maximum value is set by battery capacitance. Therefore, When the value
falls below 4.5mA, insert a resistor (R) in series in order to lower charging current value.
The discharging control has a built-in switching circuit between the battery and output. After switching off
during excess discharge, all circuit operations are prohibited. Operation reset is achieved by resuming
charging. In the event of an output short, output current is limited (about 5mA~10mA) by the internal switch
function. This reduces the risk of battery heat emission caused by an output short. Also, the switching circuit
and the battery voltage monitoring switch are on different systems. This means that the discharge output
(OUT1) will not prohibit discharge even during a short, and noise from the output load section will not affect
the detection circuit (OUT2).
Application Example
Application Example 1
Application Example 2
1. Charging current over 4mA
2. Charging current under 4mA
Charging Characteristics
Battery voltage-Charging current characteristics
Battery voltage-Charging current characteristics
Application example 2
Application
Application
example 1
example 1
Charging current
(MAX value)
Battery voltage
Vanadium lithium battery (MM1177A)
3.275V
Battery voltage
Manganese dioxide lithium battery (MM1177B)
3V
2.8V
相关型号：
MM1177A
Charge and discharge control for coin-type lithium batteries and manganese dioxide lithium batteries
MITSUMI
MM1177AF
Charge and discharge control for coin-type lithium batteries and manganese dioxide lithium batteries
MITSUMI
MM1177B
Charge and discharge control for coin-type lithium batteries and manganese dioxide lithium batteries
MITSUMI
MM1177BF
Charge and discharge control for coin-type lithium batteries and manganese dioxide lithium batteries
MITSUMI
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