参数资料
| 型号： | MC34161DMR2 |
| 厂商： | ON Semiconductor |
| 文件页数： | 12/18页 |
| 文件大小： | 0K |
| 描述： | IC MONITOR VOLTAGE UNIV 8MICRO |
| 产品变化通告： | LTB Notification 03/Jan/2008 |
| 标准包装： | 1 |
| 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 |
| 复位： | 低有效 |
| 电压 - 阀值： | 可调节/可选择 |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | Micro8? |
| 包装： | 剪切带 (CT) |
| 其它名称： | MC34161DMR2OSCT |
MC34161, MC33161, NCV33161
V CC
8
R A
Input V S
V 2
V Hys
V S
1
2.54V
Reference
Piezo
V 1
-
R 2
7
+
+
Output
Voltage
Pins 5, 6
GND
V CC
GND
Osc `ON'
R 1
2 +
3 +
+
-
1.27V
+
-
+
2.8V
-
+
0.6V
6
5
1.27V
4
C T
R B
The above figure shows the MC34161 configured as an overvoltage detector with an audio alarm. Channel 1 monitors input voltage V S while channel 2 is connected
as a simple RC oscillator. As the input voltage increases from ground, the output of channel 1 allows the oscillator to turn ‘ON’ when V S exceeds V 2 .
For known resistor values, the voltage trip points are:
For a specific trip voltage, the required resistor ratio is:
V 1 + (V th * V H )
R 2
R 1
) 1 V 2 + V th
R 2
R 1
) 1
R 2
R 1
+
V 1
V th * V H
* 1
R 2
R 1
+
V 2
V th
* 1
Figure 24. Overvoltage Detector with Audio Alarm
V CC
8
2.54V
Input V S
V 2
V 1
V Hys
1
Reference
-
R 3
7
+
+
Output
Voltage
Pin 5
GND
V CC
GND
R 2
V S
2 +
+
-
1.27V
+
2.8V
-
+
6
R DLY
Output
Voltage
Pin 6
V CC
GND
Reset LED `ON'
t DLY
R 1
3 +
+
-
1.27V
4
0.6V
5
C DLY
The above figure shows the MC34161 configured as a microprocessor reset with a time delay. Channel 2 monitors input voltage V S while channel 1 performs the
time delay function. As the input voltage decreases towards ground, the output of channel 2 quickly discharges C DLY when V S falls below V 1 . As the input voltage
increases from ground, the output of channel 2 allows R DLY to charge C DLY when V S exceeds V 2 .
For known resistor values, the voltage trip points are:
For a specific trip voltage, the required resistor ratio is:
V 1 + (V th * V H )
R 2
R 1
) 1
V 2 + V th
R 2
R 1
) 1
R 2
R 1
+
V 1
V th * V H
* 1
R 2
R 1
+
V 2
V th
* 1
For known R DLY C DLY values, the reset time delay is:
t DLY = R DLY C DLY In
1 ?
1
V th
V CC
Figure 25. Microprocessor Reset with Time Delay
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MC34161DMR2G | 功能描述:监控电路 Universal Voltage Monitor RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MC34161DR2 | 功能描述:监控电路 Universal Voltage RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MC34161DR2G | 功能描述:监控电路 Universal Voltage Monitor RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MC34161P | 功能描述:监控电路 Universal Voltage RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MC34161PG | 功能描述:监控电路 ANA UNIV VOLT MON RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
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