參數(shù)資料
型號： MC34161P
廠商： MOTOROLA INC
元件分類： 電源管理
英文描述： UNIVERSAL VOLTAGE MONITORS
中文描述： 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDIP8
封裝： PLASTIC, DIP-8
文件頁數(shù)： 9/16頁
文件大?。?/td> 292K
代理商： MC34161P
MC34161 MC33161
9
MOTOROLA ANALOG IC DEVICE DATA
The above figure shows the MC34161 configured as a positive voltage window detector. This is accomplished by connecting channel 1 as an undervoltage detector,
and channel 2 as an overvoltage detector. When the input voltage VS falls out of the window established by V1 and V4, the LED will turn ‘ON’. As the input voltage
falls within the window, VS increasing from ground and exceeding V2, or VS decreasing from the peak towards ground and falling below V3, the LED will turn ‘OFF’.
With the dashed line output connection, the LED will turn ‘ON’ when the input voltage VS is within the window.
For known resistor values, the voltage trip points are:
For a specific trip voltage, the required resistor ratio is:
Figure 19. Positive Voltage Window Detector
V
1
(V
th1
V
H1
)
R
3
R
1
R
2
1
V
3
(V
th2
V
H2
)
R
2
R
3
R
1
1
V
2
V
th1
R
3
R
1
R
2
1
V
4
V
th2
R
2
R
3
R
1
1
R
2
R
1
V
3
(V
th2
V
1
(V
th1
V
H2
)
V
H1
)
1
R
3
R
1
V
3
(V
1
V
1
(V
th2
V
th1
V
H1
)
V
H2
)
R
2
R
1
V
4
x V
th2
V
2
x V
th1
1
R
3
R
1
V
4
(V
2
V
2
x V
th2
V
th1
)
+
1.27V
+
1.27V
+
2.8V
+
0.6V
+
–
2.54V
Reference
–
+
–
+
+
–
4
1
7
2
3
5
6
VS
R3
R1
R2
8
VCC
Output
Voltage
Pins 5, 6
Gnd
CH2
CH1
LED ‘ON’
VHys2
VHys1
LED ‘ON’
‘OFF’
LED ‘OFF’
‘ON’
V4
V3
V2
V1
VCC
Gnd
Input VS
The above figure shows the MC34161 configured as a negative voltage window detector. When the input voltage –VS falls out of the window established by V1 and
V4, the LED will turn ‘ON’. As the input voltage falls within the window, –VS increasing from ground and exceeding V2, or –VS decreasing from the peak towards ground
and falling below V3, the LED will turn ‘OFF’. With the dashed line output connection, the LED will turn ‘ON’ when the input voltage –VS is within the window.
For known resistor values, the voltage trip points are:
For a specific trip voltage, the required resistor ratio is:
Figure 20. Negative Voltage Window Detector
V
1
R
1
(V
th2
R
2
V
ref
)
R
3
V
th2
V
2
R
1
(V
th2
V
H2
R
3
V
ref
)
R
2
V
th2
V
H2
V
3
(R
1
R
2
)(V
th1
R
3
V
ref
)
V
th1
V
4
(R
1
R
2
)(V
th1
V
H1
V
ref
)
R
3
V
th1
V
H1
R
1
R
2
R
3
V
1
V
th2
V
th2
V
ref
R
1
R
2
R
3
V
2
V
th2
V
th2
V
H2
V
H2
V
ref
R
3
R
1
R
2
V
th1
V
3
V
ref
V
th1
R
3
R
1
R
2
V
th1
V
4
V
H1
V
H1
V
ref
V
th1
+
1.27V
+
1.27V
+
2.8V
+
0.6V
+
–
–
+
–
+
+
–
4
1
7
2
3
5
6
2.54V
Reference
R3
R1
R2
–VS
8
VCC
Output
Voltage
Pins 5, 6
Gnd
CH2
CH1
V1
V2
V3
V4
VCC
Gnd
Input –VS
LED ‘ON’
LED ‘ON’
‘OFF’
LED ‘OFF’
‘ON’
VHys1
VHys2
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