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參數(shù)資料
| 型號(hào)： | NCP304HSQ11T1 |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 電源管理 |
| 英文描述： | Voltage Detector Series |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO4 |
| 封裝： | SC-82AB, 4 PIN |
| 文件頁數(shù)： | 19/24頁 |
| 文件大小： | 244K |
| 代理商： | NCP304HSQ11T1 |
NCP304, NCP305
http://onsemi.com
19
Figure 31. Microcontroller Systems Load Sensing
LSN27T1
LSQ09T1
50 k
NCP301
NCP305
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:
Figure 32. LED Bar Graph
LSN27T1
LSQ45T1
2
NCP301
NCP305
3
1
V
supply
LSN27T1
LSQ27T1
2
NCP301
NCP305
3
1
LSN27T1
LSQ18T1
2
NCP301
NCP305
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.
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| NCP304HSQ12T1 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Voltage Detector Series |
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| NCP304HSQ14T1 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Voltage Detector Series |
| NCP304HSQ15T1 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Voltage Detector Series |
| NCP304HSQ16T1 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Voltage Detector Series |
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