ADM6822 Analog Devices, ADM6822 Datasheet - Page 7

• Manufacturer Part Number: ADM6822
• Description: Low Voltage Supervisory Circuit with Watchdog, Manual Reset and Active-Low, Open-Drain Reset Output
• Manufacturer: Analog Devices

Specifications of ADM6822

• Batt-backup-flg: No
• Manual Reset Capability: Yes
• Package: SOT
• Power Fail Indicator: No
• Reset Threshold Summary: 9 Options--1.58 to 4.63V
• Reset Output-stage: Active-Low/Open-Drain
• Min Reset Timeout (ms): 140
• Typ Watchdog Timeout (ms): 1600
• Watchdog Timer: Yes

TYPICAL PERFORMANCE CHARACTERISTICS
10.0
1.20
1.15
1.10
1.05
1.00
0.95
0.90
0.85
0.80
100
9.5
9.0
8.5
8.0
7.5
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.5
90
80
70
60
50
40
30
20
10
Figure 7. Normalized RESET Timeout Period vs. Temperature
0
–40
–40
–40
Figure 8. V
–20
–20
–20
Figure 6. Supply Current vs. Temperature
CC
0
0
0
to RESET Output Delay vs. Temperature
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
20
20
20
V
CC
V
CC
40
40
40
V
= 3.3V
CC
= 5V
= 1.5V
60
60
60
80
80
80
100
100
100
ADM6821/ADM6822/ADM6823/ADM6824/ADM6825
120
120
120
Rev. 0 | Page 7 of 12
Figure 11. Maximum V
1.20
1.15
1.10
1.05
1.00
0.95
0.90
Figure 9. Normalized Watchdog Timeout Period vs. Temperature
1.05
1.04
1.03
1.02
1.01
1.00
0.99
0.98
0.97
0.96
0.95
160
140
120
100
80
60
40
20
0
–40
–40
10
Figure 10. Normalized RESET Threshold vs. Temperature
V
CC
–20
–20
= 2.93V
RESET THRESHOLD OVERDRIVE (mV)
CC
0
0
Transient Duration vs. RESET Threshold Overdrive
TEMPERATURE (°C)
TEMPERATURE (°C)
20
20
40
40
100
V
CC
= 4.63V
60
60
80
80
100
100
120
120
1000