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零件编号 | MC33161 | ||
描述 | (MC33161 / MC34161) Universal Voltage Monitors | ||
制造商 | ON Semiconductor | ||
LOGO | |||
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MC34161, MC33161,
NCV33161
Universal Voltage Monitors
The MC34161/MC33161 are universal voltage monitors intended
for use in a wide variety of voltage sensing applications. These devices
offer the circuit designer an economical solution for positive and
negative voltage detection. The circuit consists of two comparator
channels each with hysteresis, a unique Mode Select Input for channel
programming, a pinned out 2.54 V reference, and two open collector
outputs capable of sinking in excess of 10 mA. Each comparator
channel can be configured as either inverting or noninverting by the
Mode Select Input. This allows over, under, and window detection of
positive and negative voltages. The minimum supply voltage needed
for these devices to be fully functional is 2.0 V for positive voltage
sensing and 4.0 V for negative voltage sensing.
Applications include direct monitoring of positive and negative
voltages used in appliance, automotive, consumer, and industrial
equipment.
Features
• Unique Mode Select Input Allows Channel Programming
• Over, Under, and Window Voltage Detection
• Positive and Negative Voltage Detection
• Fully Functional at 2.0 V for Positive Voltage Sensing and 4.0 V
for Negative Voltage Sensing
• Pinned Out 2.54 V Reference with Current Limit Protection
• Low Standby Current
• Open Collector Outputs for Enhanced Device Flexibility
• NCV Prefix for Automotive and Other Applications Requiring Site
and Control Changes
• Pb−Free Packages are Available
VCC
8
1 2.54V
Reference
VS 7
−
2
+
++
2.8V
+−
1.27V
−
3
+
++
0.6V
+−
1.27V
6
5
4 This device contains
141 transistors.
Figure 1. Simplified Block Diagram
(Positive Voltage Window Detector Application)
© Semiconductor Components Industries, LLC, 2006
June, 2006 − Rev. 9
1
http://onsemi.com
MARKING
DIAGRAMS
PDIP−8
P SUFFIX
CASE 626
8
MC3x161P
AWL
YYWWG
11
8
SOIC−8
3x161
D SUFFIX
ALYW
CASE 751
1
G
1
8
Micro8t
x161
DM SUFFIX
AYW G
CASE 846A
G
1
1
x = 3 or 4
A = Assembly Location
WL, L = Wafer Lot
YY, Y = Year
WW, W = Work Week
G or G = Pb−Free Package
(Note: Microdot may be in either location)
PIN CONNECTIONS
Vref 1
Input 1 2
Input 2 3
GND 4
8 VCC
7 Mode Select
6 Output 1
5 Output 2
(TOP VIEW)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 15 of this data sheet.
Publication Order Number:
MC34161/D
MC34161, MC33161, NCV33161
Input VS
V2
V1
GND
Output VCC
Voltage
Pins 5, 6 GND
VHys
LED ‘ON’
VCC
8
VS1
R2
VS2 R1
R2
R1
1
7
+
2+ −
1.27V
+
3+ −
1.27V
2.54V
Reference
−
++
2.8V
−
++
0.6V
6
5
4
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:
ǒ ǓV1 + (Vth * VH)
R2
R1
)
1
ǒ ǓV2 + Vth
R2
R1
)
1
For a specific trip voltage, the required resistor ratio is:
R2
R1
+
Vth
V1
*
VH
*
1
R2
R1
+
V2
Vth
*
1
Figure 16. Dual Positive Overvoltage Detector
Input VS
V2
V1
GND
Output VCC
Voltage
Pins 5, 6 GND
VHys
LED ‘ON’
VCC
8
VS1
R2
VS2
R1
R2
R1
2.54V
1 Reference
7
+
2+ −
1.27V
+
3+ −
1.27V
−
++
2.8V
−
++
0.6V
4
6
5
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.
For known resistor values, the voltage trip points are:
ǒ ǓV1 + (Vth * VH)
R2
R1
)
1
ǒ ǓV2 + Vth
R2
R1
)
1
For a specific trip voltage, the required resistor ratio is:
R2
R1
+
Vth
V1
*
VH
*
1
R2
R1
+
V2
Vth
*
1
Figure 17. Dual Positive Undervoltage Detector
http://onsemi.com
8
MC34161, MC33161, NCV33161
PACKAGE DIMENSIONS
PDIP−8
CASE 626−05
ISSUE L
NOTE 2
85
14
F
−A−
−B−
−T−
SEATING
PLANE
H
C
N
DK
G
0.13 (0.005) M T A M B M
L
J
M
NOTES:
1. DIMENSION L TO CENTER OF LEAD WHEN
FORMED PARALLEL.
2. PACKAGE CONTOUR OPTIONAL (ROUND OR
SQUARE CORNERS).
3. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
MILLIMETERS
INCHES
DIM MIN MAX MIN MAX
A 9.40 10.16 0.370 0.400
B 6.10 6.60 0.240 0.260
C 3.94 4.45 0.155 0.175
D 0.38 0.51 0.015 0.020
F 1.02 1.78 0.040 0.070
G 2.54 BSC
0.100 BSC
H 0.76 1.27 0.030 0.050
J 0.20 0.30 0.008 0.012
K 2.92 3.43 0.115 0.135
L 7.62 BSC
0.300 BSC
M −−− 10_ −−− 10_
N 0.76 1.01 0.030 0.040
http://onsemi.com
16
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页数 | 18 页 | ||
下载 | [ MC33161.PDF 数据手册 ] |
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