ADM690AN 데이터 시트보기 (PDF) - Analog Devices
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ADM690AN Datasheet PDF : 16 Pages
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5.00
4.95
4.90
4.85
VCC = 5V
TA = +25°C
SLOPE = 1.5Ω
4.80
0
20
40
60
80
100
IOUT – mA
Figure 8. VOUT vs. IOUT Normal
Operation
Typical Performance Curves–ADM690–ADM695
2.80
2.79
VCC = 0V
VBATT = +2.8V
TA = +25°C
A4
100
90
3.36 V
2.78
2.77
SLOPE = 20Ω
2.76
0
200
400 600 800 1000
IOUT – µA
Figure 9. VOUT vs. IOUT Battery
Backup
10
0%
1V
1V
500ms
Figure 10. Reset Output Voltage vs.
Supply Voltage
1.303
1.302
1.301
1.300
1.299
20
40
60
80
100 120
TEMPERATURE – °C
Figure 11. PFI Input Threshold vs.
Temperature
53
VCC = +5V
52
51
ADM690
ADM691
ADM692
50
ADM693
49
20
40
60
80
100 120
TEMPERATURE – °C
Figure 12. Reset Active Time vs.
Temperature
4.70
VCC = +5V
4.68
POWER-UP
4.66
ADM690
ADM691
ADM694
ADM695
4.64
POWER-DOWN
4.62
20
40
60
80
100 120
TEMPERATURE – °C
Figure 13. Reset Voltage Threshold
vs. Temperature
6
5
VCC
TA =
= 5V
+25°C
4
3
VPFI
2
PFO
1.3V
30pF
1
0
1.35
1.25
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
TIME – µs
Figure 14. Power Fail Comparator
Response Time
6
5
VCC
TA =
= 5V
+25°C
4
3
2
VPFI
1
1.3V
0
PFO
30pF
1.35
1.25
0 10 20 30 40 50 60 70 80 90
TIME – µs
Figure 15. Power Fail Comparator
Response Time
6
5
VCC
TA =
= 5V
+25°C
4
3
2
1
0
VPFI
1.3V
+5V
PFO
10k
30pF
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 – µs
Figure 16. Power Fail Comparator
Response Time with Pull-Up Resistor
REV. A
–9–
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