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參數(shù)資料
| 型號： | MM1357 |
| 廠商： | MITSUMI ELECTRIC CO LTD |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Control of Lithium Ion Batteries Monolithic IC |
| 中文描述： | BATTERY CHARGE CONTROLLER, PDSO14 |
| 封裝： | SOP-14 |
| 文件頁數(shù)： | 5/6頁 |
| 文件大?。?/td> | 149K |
| 代理商： | MM1357 |
MITSUMI
Control of Lithium Ion Batteries (switching regulator secondary) (two cells) MM1357
Note 1 : 1. The REG OUT voltage can be set to 1.2V typ. (R5+R6)/R6. (REG OUT = 2 to 6V)
2. The value of R4 should be set according to the load. (Consider it to be a shunt regulator.)
3. The voltage under constant-voltage charging is equal to (R3/R2) REG OUT. When a high-
precision voltage is required, use the knob for adjustment.
4. The current in constant-current charging can be set to either of two values, 0.15V/R1 (when CC-IN
is H), and 0.32V/R1 (when CC-IN is L).
5. R7 is a resistance for current limiting.
6. The capacitors C1 and C5 are to prevent oscillation; C4 is for soft starting of the REG OUT
voltage; and C2 is used to delay current switching (CC-OUT switched from H to L).
Note 2 : This IC incorporates a voltage-controlling amp and protection against shorting to VREF ; when R2,
R3, R5 and R6 are shorted, the voltage is limited to its minimum value. By means of a comparator
within the VFB+, VFB
-
and VREF pin area, upon resistance shorting the OUT pin is forced to L.
Note 3 : The above diagram is an example for reference purposes; in actual use the circuit should be studied
thoroughly prior to use.
Application Circuits
Characteristics
Current limit 1 vs temperature
0.35
0.3
0.25
-
25
0
25
50
75 85
Ambient temperature (
°
C)
C
Current limit 2 vs temperature
0.2
0.15
0.1
-
25
0
25
50
75 85
Ambient temperature (
°
C)
C
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