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參數(shù)資料
| 型號(hào)： | DS2720CU/T&R |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封裝： | MICRO, SOP-8 |
| 文件頁數(shù)： | 16/21頁 |
| 文件大小： | 264K |
| 代理商： | DS2720CU/T&R |
DS2720
4 of 21
Table 1. DETAILED PIN DESCRIPTION
SYMBOL
DESCRIPTION
PLS
Battery-Pack Positive Terminal Input. The device monitors the state of the battery
pack’s positive terminal through this pin in order to detect events such as the attachment
of a charger or the removal of a short circuit. Connect PLS to the pack positive terminal
through a 100
W resistor.
PS
Power-Switch Sense Input. The device wakes up from sleep mode when it senses the
closure of a switch to VSS on this pin. PS has a high-impedance internal pullup.
DQ
Data Input/Out. 1-Wire data line. Open-drain output driver. Connect this pin to the
DATA terminal of the battery pack. DQ has an internal 0.5
mA pull-down.
VSS
Device Ground. Connect directly to the negative terminal of the battery cell.
VDD
Power Supply Input. Connect VDD to the positive terminal of the battery cell through a
decoupling network.
CP
Charge Pump Output. The internal charge pump regulates CP to 9V which supplies
the ON state drive to the protection FETs. Connect a 0.1
mF reservoir capacitor from CP
to VSS.
CC
Charge Protection Control Output. Controls an external N-channel high-side charge
protection FET.
DC
Discharge Protection Control Output. Controls an external N-channel high-side
discharge protection FET.
Figure 2. APPLICATION EXAMPLE
CP
CC
DC
PS
PLS
VDD
VSS
DQ
DS2720
1-CELL Li+
1k
102
104
PACK+
PS
DATA
PACK-
100
330
10
104
102
1k
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