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MM3746BB1LBE PDF预览

MM3746BB1LBE

更新时间： 2024-02-01 18:33:37
品牌 Logo 应用领域
三美电机 - MITSUMI /
页数 文件大小 规格书
3页 201K
描述
N channel high side FET drive by charge pump

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MM3746BB1LBE 数据手册

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MM3746 Series  
N channel high side FET drive by charge pump  
Outline  
MM3746 series are protection ICs with charger pump and drive  
high side N channel FET for Lithium-ion and Lithium-polymer  
secondary battery. This IC is most suitable for the intelligent  
battery pack with which I communicate data between the battery  
pack and the system.  
And MM3746 series has a temperature detection by using a  
NTC Thermistor, protects the battery pack and system from over  
temperature.  
Features  
(Unless otherwise specified, Ta=25°C)  
(1) Range and accuracy of detection/release voltage  
Overcharge detection voltage............................ Vdet1 ................................. 4.2V to 4.6V, 5mV steps.............Accuracy±15mV  
Overdischarge detection voltage....................... Vdet2 ................................. 2.0V to 3.0V, 50mV steps...........Accuracy±40mV  
Discharging overcurrent detection voltage........ Vdet3 ................................. 10mV to 150mV, 1mV steps.........Accuracy±3.0mV *1  
Charging overcurrent detection voltage ............ Vdet4 ................................. –150mV to –10mV, 1mV steps .....Accuracy±3.0mV *1  
Short detection voltage...................................... Vshort ................................ 40mV to 300mV, 50mV steps....... Accuracy±5.0mV  
0V battery charge inhibition battery voltage ...... Vst ..................................... ±1.3V fixed .................................. Accuracy±150mV  
Temperature detection....................................... Tdet ................................... 55 to 85°C.................................... Accuracy±5.0°C  
*1 Accuracy of overcurrent detection voltage (Ta=25°C)  
6
ꢀꢁet3ꢂ ꢀꢁet4  
5
4
3
2
1
0
0
10  
20  
30  
40  
50  
60  
70  
80  
90 100  
Overcurrent detection voltage ꢀmVꢁ  
(2) Temperature detection function.............................Selectable “Enable” or “Disable”  
(3) 0V battery charge function ....................................Selection from “Permission” or “Inhibition”  
(4) Current consumption (Not include NTC bias current)  
Normal mode .....................................................Typ. 6.0µA, Max. 10.0µA  
Stand-by mode..................................................Max. 0.1µA (Overdischarge latch function Enable)  
Max. 1.2µA (Overdischarge latch function Disable)  
Pin assignment  
WLCSP-10A  
Pin no.  
A1  
Symbol  
VSS  
Function  
Negative power supply voltage input terminal  
Positive power supply voltage input terminal  
Charge FET control terminal  
(Top view)  
A2  
VDD  
A3  
COUT  
*: +6<;  
B1  
B3  
TH(TEST) Temperature level detect terminal (Test terminal)  
*6<;  
=++  
(ꢄ  
(ꢃ  
(ꢂ  
)ꢄ  
*ꢄ  
+ꢄ =ꢅ  
+ꢃ  
+ꢂ  
=6<;  
*7  
CS  
CN  
Current level detect terminal  
)ꢂ  
*ꢂ  
=::  
C1  
Flying capacitor connecting terminal  
Discharge FET control terminal  
Flying capacitor connecting terminal  
Charge pump output terminal  
;/  
ꢀ;,:;ꢁ  
*5  
C3  
DOUT  
CP  
D1  
D2  
VOUT  
V+  
D3  
Charger positive voltage input terminal  
1
123

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