参数资料
| 型号： | MC33161P |
| 厂商： | ON Semiconductor |
| 文件页数： | 11/18页 |
| 文件大小： | 0K |
| 描述： | IC MONITOR VOLTAGE UNIV 8DIP |
| 产品变化通告： | LTB Notification 03/Jan/2008 |
| 标准包装： | 1,000 |
| 类型： | 多压监控器 |
| 监视电压数目： | 2 |
| 输出： | 开路漏极或开路集电极 |
| 电压 - 阀值： | 可调节/可选择 |
| 工作温度： | -40°C ~ 105°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 8-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 8-PDIP |
| 包装： | 管件 |
| 其它名称： | MC33161POS |
MC34161, MC33161, NCV33161
V CC
8
Input V S2
V 4
V 3
V Hys2
1
2.54V
Reference
Input -V S1
Output
Voltage
Pins 5, 6
GND
V 1
V 2
V CC
GND
V Hys1
LED `ON'
-V S1
V S2
R 4
R 3
R2
R 1
7
2 +
3 +
+
-
1.27V
+
-
1.27V
+
+
-
+
2.8V
-
+
0.6V
6
5
4
The above figure shows the MC34161 configured as a positive and negative overvoltage detector. As the input voltage increases from ground, the LED will turn
‘ON’ when either ? V S1 exceeds V 2 , or V S2 exceeds V 4 . With the dashed line output connection, the circuit becomes a positive and negative undervoltage detector.
As the input voltage decreases from the peak towards ground, the LED will turn ‘ON’ when either V S2 falls below V 3 , or ? V S1 falls below V 1 .
For known resistor values, the voltage trip points are:
For a specific trip voltage, the required resistor ratio is:
V 1 +
R 3
R 4
(V th1 * V ref ) ) V th1
V 3 + (V th2 * V H2 )
R 2
R 1
) 1
R 3
R 4
+
(V 1 * V th1 )
(V th1 * V ref )
R 2
R 1
+
V 4
V th2
* 1
V 2 +
R 3
R 4
(V th1 * V H1 * V ref ) ) V th1 * V H1
V 4 + V th2
R 2
R 1
) 1
R 3
R 4
+
(V 2 * V th1 ) V H1 )
(V th1 * V H1 * V ref )
R 2
R 1
+
V 3
V th2 * V H2
* 1
Figure 22. Positive and Negative Overvoltage Detector
V CC
8
Input V S1
V 2
V 1
V Hys1
1
2.54V
Reference
GND
V 3
Input -V S2
V 4
V Hys2
V S1
R 4
R 3
7
2 +
+
-
1.27V
+
-
+
2.8V
-
6
R 2
+
+
Output V CC
Voltage
Pins 5, 6 GND
LED `ON'
R 1
3 +
+
-
1.27V
0.6V
5
-V S2
4
The above figure shows the MC34161 configured as a positive and negative undervoltage detector. As the input voltage decreases toward ground, the LED will
turn ‘ON’ when either V S1 falls below V 1 , or ? V S2 falls below V 3 . With the dashed line output connection, the circuit becomes a positive and negative overvoltage
detector. As the input voltage increases from the ground, the LED will turn ‘ON’ when either V S1 exceeds V 2 , or ? V S1 exceeds V 1 .
For known resistor values, the voltage trip points are:
For a specific trip voltage, the required resistor ratio is:
V 1 + (V th1 * V H1 )
R 4
R 3
) 1
V 3 +
R 1
R 2
(V th * V ref ) ) V th2
R 4
R 3
+
V 2
V th1
* 1
R 1
R 2
+
V 4 ) V H2 * V th2
V th2 * V H2 * V ref
V 2 + V th1
R 4
R 3
) 1
V 4 +
R 1
R 2
(V th * V H2 * V ref ) ) V th2 * V H2
R 4
R 3
+
V 1
V th1 * V H1
* 1
R 1
R 2
+
V 3 * V th2
V th2 * V ref
Figure 23. Positive and Negative Undervoltage Detector
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