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PDF MC33161 Data sheet ( Hoja de datos )
| Número de pieza | MC33161 | |
| Descripción | (MC33161 / MC34161) Universal Voltage Monitors | |
| Fabricantes | ON Semiconductor | |
| Logotipo |  |
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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
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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
1 page  
MC34161, MC33161, NCV33161
2.8 2.610
2.4 Vref Max = 2.60 V
2.578
2.0
1.6 2.546
Vref Typ = 2.54 V
1.2 2.514
0.8
VCC = 5.0 V
VMode = GND
0.4
VMode = GND
TA = 25°C
2.482
Vref Min = 2.48 V
0 2.450
0 10 20 30 40 −55 −25 0 25 50 75 100 125
VCC, SUPPLY VOLTAGE (V)
TA, AMBIENT TEMPERATURE (°C)
Figure 8. Reference Voltage
versus Supply Voltage
Figure 9. Reference Voltage
versus Ambient Temperature
0
−2.0
−4.0
VCC = 5.0 V
VMode = GND
−6.0
−8.0
−10
0
1.0 2.0 3.0 4.0 5.0 6.0 7.0
Iref, REFERENCE SOURCE CURRENT (mA)
Figure 10. Reference Voltage Change
versus Source Current
8.0
0.5
VCC = 5.0 V
VMode = GND
0.4
TA = 85°C
0.3 TA = 25°C
0.2 TA = −40°C
0.1
0
0 4.0 8.0 12 16
Iout, OUTPUT SINK CURRENT (mA)
Figure 11. Output Saturation Voltage
versus Output Sink Current
0.8
0.6
VMode = GND
Pins 2, 3 = 1.5 V
0.4
VMode = VCC
Pins 2, 3 =
GND
VMode = Vref
Pin 1 = 1.5 V
Pin 2 = GND
0.2
ICC measured at Pin 8
TA = 25°C
0
0 10 20 30 40
VCC, SUPPLY VOLTAGE (V)
Figure 12. Supply Current versus
Supply Voltage
1.6
1.2
0.8
0.4
0
0
VCC = 5.0 V
VMode = GND
TA = 25°C
4.0 8.0 12
Iout, OUTPUT SINK CURRENT (mA)
Figure 13. Supply Current
versus Output Sink Current
16
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5
5 Page 
Input VS2
V4
V3
GND
Input −VS1
V1
V2
Output VCC
Voltage
Pins 5, 6 GND
MC34161, MC33161, NCV33161
VHys2
VHys1
LED ‘ON’
VCC
8
2.54V
1 Reference
R4 7
−VS1
+
R3 2 + −
−
++
2.8V
1.27V
−
R2 + +
VS2
+
R1
3+ −
1.27V
0.6V
4
6
5
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 −VS1 exceeds V2, or VS2 exceeds V4. 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 VS2 falls below V3, or −VS1 falls below V1.
For known resistor values, the voltage trip points are:
V1
+
R3
R4
(Vth1
*
Vref)
)
Vth1
V2
+
R3
R4
(Vth1
*
VH1
*
Vref)
)
Vth1
*
VH1
ǒ ǓV3 + (Vth2 * VH2)
R2
R1
)
1
ǒ ǓV4 + Vth2
R2
R1
)
1
For a specific trip voltage, the required resistor ratio is:
R3
R4
+
(V1 * Vth1)
(Vth1 * Vref)
R3
R4
+
(V2 * Vth1 ) VH1)
(Vth1 * VH1 * Vref)
R2
R1
+
V4
Vth2
*
1
R2
R1
+
V3
Vth2 *
VH2
*
1
Figure 22. Positive and Negative Overvoltage Detector
Input VS1
V2
V1
GND
V3
Input −VS2
V4
Output VCC
Voltage
Pins 5, 6 GND
VHys1
VHys2
LED ‘ON’
R4
VS1 R3
R2
R1
−VS2
VCC
8
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 positive and negative undervoltage detector. As the input voltage decreases toward ground, the LED will
turn ‘ON’ when either VS1 falls below V1, or −VS2 falls below V3. 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 VS1 exceeds V2, or −VS1 exceeds V1.
For known resistor values, the voltage trip points are:
ǒ ǓV1 + (Vth1 * VH1)
R4
R3
)
1
ǒ ǓV2 + Vth1
R4
R3
)
1
V3
+
R1
R2
(Vth
*
Vref)
)
Vth2
V4
+
R1
R2
(Vth
*
VH2
*
Vref)
)
Vth2
*
VH2
For a specific trip voltage, the required resistor ratio is:
R4
R3
+
V2
Vth1
*
1
R4
R3
+
V1
Vth1 *
VH1
*
1
R1
R2
+
V4 ) VH2 * Vth2
Vth2 * VH2 * Vref
R1
R2
+
V3 * Vth2
Vth2 * Vref
Figure 23. Positive and Negative Undervoltage Detector
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11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet MC33161.PDF ] | |
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