參數(shù)資料
型號: MC34161D
廠商: MOTOROLA INC
元件分類: 電源管理
英文描述: Single Output LDO, 250mA, Fixed(5.0V), Low Noise, Fast Transient Response 8-SOIC -40 to 85
中文描述: 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8
封裝: PLASTIC, SO-8
文件頁數(shù): 7/16頁
文件大小: 292K
代理商: MC34161D
MC34161 MC33161
7
MOTOROLA ANALOG IC DEVICE DATA
The above figure shows the MC34161 configured as a dual positive overvoltage detector. As the input voltage increases from ground, the LED will turn ‘ON’ when
VS1 or VS2 exceeds V2. With the dashed line output connection, the circuit becomes a dual positive undervoltage detector. As the input voltage decreases from the
peak towards ground, the LED will turn ‘ON’ when VS1 or VS2 falls below V1.
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 15. Dual Postive Overvoltage Detector
8
+
1.27V
+
1.27V
+
2.8V
+
0.6V
+
2.54V
Reference
+
+
+
4
1
7
2
3
5
6
VS2
R1
R2
R2
R1
VCC
Input VS
Output
Voltage
Pins 5, 6
V2
V1
Gnd
VCC
LED ‘ON’
VHys
Gnd
VS1
The above figure shows the MC34161 configured as a dual positive undervoltage detector. As the input voltage decreases towards ground, the LED will turn ‘ON’
when VS1 or VS2 falls below V1. With the dashed line output connection, the circuit becomes a dual positive overvoltage detector. As the input voltage increases from
ground, the LED will turn ‘ON’ when VS1 or VS2 exceeds V2.
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 resistor values, the voltage trip points are:
For a specific trip voltage, the required resistor ratio is:
Figure 16. Dual Postive Undervoltage Detector
VS1
+
1.27V
+
1.27V
+
2.8V
+
0.6V
+
8
+
+
+
4
1
7
2
3
5
6
VS2
2.54V
Reference
VCC
R1
R2
R2
R1
VHys
Input VS
Output
Voltage
Pins 5, 6
V2
V1
Gnd
VCC
LED ‘ON’
Gnd
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