ADM692 Datasheet

  • ADM692

  • Microprocessor Supervisory Circuits

  • 590.74KB

  • 17页

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Typical Performance Curves鈥揂DM690鈥揂DM695
5.00
V
CC
= 5V
T
A
= +25掳C
4.95
2.80
V
CC
= 0V
V
BATT
= +2.8V
T
A
= +25掳C
A4
100
90
3.36 V
2.79
V
OUT
鈥?V
V
OUT
鈥?V
4.90
SLOPE = 1.5鈩?/div>
4.85
2.78
SLOPE = 20鈩?/div>
2.77
10
0%
1V
4.80
0
20
40
60
80
100
I
OUT
鈥?mA
1V
500ms
2.76
0
200
400
600
I
OUT
鈥?/div>
碌A
800
1000
Figure 8. V
OUT
vs. I
OUT
Normal
Operation
Figure 9. V
OUT
vs. I
OUT
Battery
Backup
Figure 10. Reset Output Voltage vs.
Supply Voltage
1.303
53
RESET VOLTAGE THRESHOLD 鈥?V
V
CC
= +5V
4.70
V
CC
= +5V
4.68
POWER-UP
4.66
ADM690
ADM691
ADM694
ADM695
PFI INPUT THRESHOLD 鈥?V
1.302
RESET ACTIVE TIME 鈥?ms
52
1.301
51
ADM690
ADM691
ADM692
ADM693
1.300
50
4.64
POWER-DOWN
1.299
20
49
40
60
80
100
120
4.62
20
40
60
80
100
TEMPERATURE 鈥?/div>
C
120
20
40
60
80
100
TEMPERATURE 鈥?/div>
C
120
TEMPERATURE 鈥?/div>
C
Figure 11. PFI Input Threshold vs.
Temperature
Figure 12. Reset Active Time vs.
Temperature
Figure 13. Reset Voltage Threshold
vs. Temperature
6
5
4
3
2
1
0
V
PFI
1.3V
PFO
30pF
V
CC
= 5V
T
A
= +25
C
6
5
4
3
2
1
0
V
PFI
1.3V
PFO
30pF
V
CC
= 5V
T
A
= +25
C
6
5
4
3
2
1
0
V
PFI
1.3V
PFO
30pF
+5V
10k
V
CC
= 5V
T
A
= +25
C
1.35
1.25
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
TIME 鈥?/div>
碌s
1.35
1.25
0
10 20
30 40 50 60
TIME 鈥?/div>
碌s
70 80
90
1.35
1.25
0
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8
TIME 鈥?/div>
碌s
Figure 14. Power Fail Comparator
Response Time
Figure 15. Power Fail Comparator
Response Time
Figure 16. Power Fail Comparator
Response Time with Pull-Up Resistor
REV. A
鈥?鈥?/div>

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