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參數(shù)資料
| 型號： | TL7770-5IN |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | DUAL POWER-SUPPLY SUPERVISORS |
| 中文描述： | 雙電源監(jiān)事 |
| 文件頁數(shù)： | 8/9頁 |
| 文件大?。?/td> | 128K |
| 代理商： | TL7770-5IN |
TL7770-5, TL7770-12
DUAL POWER-SUPPLY SUPERVISORS
SLVS019F – OCTOBER 1987 – REVISED JULY 1999
8
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
VS
10 k
1VSU
1RESIN
GND
1RESET
1RESET
VCC
1CT
To System Reset
10 k
RT
(see Note B)
CT
System Supply
Reset Input
(from system)
To System Reset
5
1
4
3
2
8
16
NOTE B: When VCC and 1VSU are connected to the same point, it is recommended that series resistance (RT) be added between the time-delay
programming capacitor (CT) and the voltage-supervisor device terminal (1CT). The suggested RT value is given by:
R
T
V
I
1
V
IT
10
3
, where V
I
the lesser of 7.1 V or V
S
When this series resistor is used, the td calculation is as follows:
(6.5E
5)
6.5
10
t
d
1.3
10
5
R
T
5
C
T
Figure 4. System Reset Controller With Undervoltage Sensing
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