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NCP300 Datasheet(PDF) 19 Page - ON Semiconductor

No. de Pieza. NCP300
Descripción  Voltage Detector Series
Descarga  25 Pages
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Fabricante  ONSEMI [ON Semiconductor]
Página de inicio  http://www.onsemi.com
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NCP300 Datasheet(HTML) 19 Page - ON Semiconductor

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NCP300, NCP301
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Figure 30. Simple Clock Oscillator
NCP301
LSN27T1
Reset Output
Input
R2 (See table)
NCP301
LSN27T1
GND
NCP300
HSN27T1
C
5.0 V
R1 = 100 k
W
C (nF)
fOSC (kHz)
IQ (mA)
0.01
10.4
18
0.068
9.8
18
1.0
6.18
21
Test Data
2
1
3
fOSC (kHz)
IQ (mA)
6.0
30
5.7
30
3.6
29
10
1.41
21
100
0.27
22
1000
0.045
22
1.34
25
0.356
23
0.077
22
R2 = 82 k
W
R2 = 8.2 k
W
Table values are for information only.
Figure 31. Microcontroller System Load Sensing
NCP301
LSN27T1
50 k
NCP301
LSN27T1
NCP301
LSN09T1
Vsupply
Load
Rsense
Input
2
3
GND
1
Reset Output
Microcontroller
GND
VDD
If:
ILoad t VDET − /Rsense
ILoad w (VDET −+VHYS)/Rsense
Then:
Reset Output = 0 V
Reset Output = VDD
This circuit monitors the current at the load. As
current flows through the load, a voltage drop with
respect to ground appears across Rsense where
Vsense = Iload * Rsense. The following conditions apply:


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