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參數(shù)資料
| 型號： | NCP302 |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | Voltage Detector Series with Programmable Delay |
| 中文描述： | 電壓檢測器系列，具有可編程延遲 |
| 文件頁數(shù)： | 20/26頁 |
| 文件大?。?/td> | 191K |
| 代理商： | NCP302 |
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NCP302, NCP303
http://onsemi.com
20
Figure 43. Microcontroller Systems Load Sensing
LSN27T1
LSN09T1
50 k
NCP301
NCP303
V
supply
Load
R
sense
Input
2
3
GND
1
Reset Output
Microcontroller
GND
V
DD
If:
I
Load
I
Load
V
DET
/R
sense
(V
DET
+V
HYS
)/R
sense
Then:
Reset Output = 0 V
Reset Output = V
DD
This circuit monitors the current at the load. As
current flows through the load, a voltage drop with
respect to ground appears across R
sense
where
V
sense
= I
load
* R
sense.
The following conditions apply:
5
C
D
Figure 44. LED Bar Graph Voltage Monitor
LSN27T1
LSN45T1
2
NCP301
NCP303
3
1
V
supply
LSN27T1
2
NCP301
NCP303
3
1
LSN27T1
LSN18T1
2
NCP301
NCP303
3
1
Input
GND
Reset
Output
Input
GND
Reset
Output
Input
GND
Reset
Output
V
in
= 1.0 V to 10 V
A simple voltage monitor can be constructed by connecting several voltage detectors as shown above. Each LED will
sequentially turn on when the respective voltage detector threshold (V
DET
+V
HYS
) is exceeded. Note that detector
thresholds (V
DET
) that range from 0.9 V to 4.9 V in 100 mV steps can be manufactured.
5
C
D
5
C
D
5
C
D
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| NCP3020A | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Synchronous PWM Controller |
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