參數(shù)資料
型號(hào)： MC33161DMR2G
廠商： ON SEMICONDUCTOR
元件分類(lèi)： 電源管理
英文描述： Universal Voltage Monitors
中文描述： 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8
封裝： LEAD FREE, PLASTIC, MICROPAK-8
文件頁(yè)數(shù)： 12/18頁(yè)
文件大?。?/td> 225K
代理商： MC33161DMR2G
MC34161, MC33161, NCV33161
http://onsemi.com
12
The above figure shows the MC34161 configured as an overvoltage detector with an audio alarm. Channel 1 monitors input voltage V
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:
Figure 24. Overvoltage Detector with Audio Alarm
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
+
1.27V
+
1.27V
+
2.8V
+
0.6V
+
2.54V
Reference
+
+
+
4
1
7
2
3
5
6
8
V
CC
R
A
V
S
R
1
R
2
R
B
C
T
V
2
V
1
Input V
S
Output
Voltage
Pins 5, 6
GND
V
CC
GND
Osc ‘ON’
V
Hys
Piezo
The above figure shows the MC34161 configured as a microprocessor reset with a time delay. Channel 2 monitors input voltage V
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:
Figure 25. Microprocessor Reset with Time Delay
V
1
(V
th
V
H
)
R
2
R
1
1
V
2
V
th
R
2
R
1
1
For known R
DLY
C
DLY
values, the reset time delay is:
R
2
R
1
V
1
V
th
V
H
1
R
2
R
1
V
2
V
th
1
+
1.27V
+
1.27V
+
2.8V
+
0.6V
+
+
+
+
4
1
7
2
3
5
6
2.54V
Reference
8
V
CC
R
3
R
DLY
V
S
R
1
R
2
C
DLY
Input V
S
Output
Voltage
Pin 6
V
2
V
1
GND
V
CC
GND
V
CC
GND
V
Hys
t
DLY
Reset LED ‘ON’
Output
Voltage
Pin 5
1
1
V
th
V
CC
t
DLY
= R
DLY
C
DLY
In
相關(guān)PDF資料
PDF描述
MC33164DM-3R2 MICROPOWER UNDERVOLTAGE SENSING CIRCUITS
MC33164DM-3R2G MICROPOWER UNDERVOLTAGE SENSING CIRCUITS
MC33164 Micropower Undervoltage Sensing Circuits(μP監(jiān)控電路)
MC33172 Single Supply 3.0 V to 44 V, Low Power Operational Amplifiers(單電源，低功耗運(yùn)算放大器)
MC33174 Single Supply 3.0 V to 44 V, Low Power Operational Amplifiers(單電源，低功耗運(yùn)算放大器)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC33161DR2 功能描述:監(jiān)控電路 Universal Voltage RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過(guò)電壓閾值: 輸出類(lèi)型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開(kāi)關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel
MC33161DR2G 功能描述:監(jiān)控電路 Universal Voltage Monitor RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過(guò)電壓閾值: 輸出類(lèi)型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開(kāi)關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel
MC33161DR2G-CUT TAPE 制造商:ON 功能描述:MC33161 Series 1.27V Dual Adjustable/Selectable Universal Voltage Monitor-SOIC-8
MC33161P 功能描述:監(jiān)控電路 Universal Voltage RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過(guò)電壓閾值: 輸出類(lèi)型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開(kāi)關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel
MC33161PG 功能描述:監(jiān)控電路 Universal Voltage Monitor RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過(guò)電壓閾值: 輸出類(lèi)型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開(kāi)關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel
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