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PDF MC33465 Data sheet ( Hoja de datos )
| Número de pieza | MC33465 | |
| Descripción | Micropower Undervoltage Sensing Circuits | |
| Fabricantes | ON Semiconductor | |
| Logotipo |  |
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MC33465
Micropower Undervoltage
Sensing Circuits with
Programmable Output Delay
The MC33465 series are micropower undervoltage sensing circuits
that are specifically designed for use with battery powered
microprocessor based systems, where extended battery life is required.
A choice of several threshold voltages from 0.9 V to 4.5 V are
available. This device features a very low quiescent bias current of 1.0
µA typical.
The MC33465 series features a highly accurate voltage reference, a
comparator with precise thresholds and built–in hysteresis to prevent
erratic reset operation, a choice of output configurations between open
drain or complementary, a time delayed output, which can be
programmed by the system designer, and guaranteed operation below
1.0 V with extremely low standby current. This device is available in a
SOT–23 5–pin surface mount package.
Applications include direct monitoring of the MPU/logic power
supply used in appliance, automotive, industrial and portable
equipment.
Features:
• Extremely Low Standby Current of 1.0 µA at Vin = 3.5 V
• Wide Input Voltage Range (0.7 V to 10 V)
• Monitors Power Supply Voltages from 1.1 V to 5.0 V
• High Accuracy Detector Threshold (±2.5%)
• Two Reset Output Types (Open Drain or Complementary Drive)
• Programmable Output Delay by External Capacitor
(100 ms typ. with 0.15 µF)
• Surface Mount Package (SOT–23 5–Pin)
• Convenient Tape and Reel (3000 per Reel)
http://onsemi.com
5
1
SOT–23–5
N SUFFIX
CASE 1212
PIN CONNECTIONS
Reset 1
Input 2
Ground 3
5 CD
4 N/C
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 7 of this data sheet.
Representative Block Diagrams
MC33465N–YYATR
Open Drain Output Configuration
2 Input
1 Reset
MC33465N–YYCTR
Complementary Output Configuration
2 Input
RD
Vref
3 Gnd 5 CD
RD
Vref
3 Gnd 5 CD
YY Denotes Threshold Voltage
This device contains 28 active transistors.
1
Reset
© Semiconductor Components Industries, LLC, 1999
October, 1999 – Rev. 3
1
Publication Order Number:
MC33465/D
1 page  
MC33465
Figure 7. CD Sink Current versus Input Voltage
12
MC33465N–27ATR
10 VOL = 0.5 V
TA = –30°C
25°C
8.0
80°C
6.0
4.0
2.0
0
0 0.5 1.0 1.5 2.0 2.5 3.0
Vin, INPUT VOLTAGE (V)
Figure 8. CD Sink Current versus CD Voltage
16
14
12
Vin = 2.5 V
10
8.0 Vin = 2.0 V
6.0
4.0
2.0 Vin = 1.5 V
0
0 0.5 1.0 1.5 2.0 2.5 3.0
VCD, VOLTAGE (V)
Figure 9. Delay Resistance versus Temperature
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
–40
–20 0
20 40 60
TA, AMBIENT TEMPERATURE (°C)
80
Figure 10. Detector Threshold versus Temperature
1.9
1.8
1.7
1.6
Vin = 2.97 V
1.5
1.4
1.3
MC33465N–27ATR
1.2
–40 –20
0
20 40
TA, AMBIENT TEMPERATURE (°C)
60
80
Figure 11. Output Delay Time versus
Delay Capacitance
1000
100
tD: Output Switch
10 Low to High
1.0
0.1
0.01
0.0001
tPHL: Output Switch
High to Low
0.001
0.01
0.1
CD, DELAY CAPACITANCE (µF)
1
http://onsemi.com
5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet MC33465.PDF ] | |
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