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ManualsBrandsMAXIM INTEGRATED ManualsPMICsPMIC - system monitor Watchdog timer uMAX 8
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MAX16997/MAX16998
High-Voltage Watchdog Timers with
Adjustable Timeout Delay
4 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(C
SWT
= C
SRT
= 1500pF, T
A
= +25°C, unless otherwise noted.)
SUPPLY CURRENT
vs. TEMPERATURE
MAX16997/98 toc04
TEMPERATURE (°C)
SUPPLY CURRENT (µA)
1109565 80-10 5 20 35 50-25
15.5
16.0
16.5
17.0
17.5
18.0
18.5
19.0
19.5
20.0
15.0
-40 125
RESET AND ENABLE NOT
ASSERTED
RESETIN/EN THRESHOLD VOLTAGE
vs. TEMPERATURE
MAX16997/98 toc05
TEMPERATURE (°C)
RESETIN/EN THRESHOLD VOLTAGE (V)
1109565 80-10 5 20 35 50-25
1.13
1.15
1.18
1.20
1.23
1.25
1.28
1.30
1.33
1.35
1.10
-40 125
RISING
FALLING
RESETIN/EN THRESHOLD VOLTAGE
vs. SUPPLY VOLTAGE
MAX16997/98 toc06
SUPPLY VOLTAGE (V)
RESETIN/EN THRESHOLD VOLTAGE (V)
363224 2812 16 208
1.05
1.10
1.15
1.20
1.25
1.30
1.35
1.40
1.45
1.50
1.00
440
RISING
FALLING
RESETIN TO RESET DELAY
vs. TEMPERATURE
MAX16997/98 toc07
TEMPERATURE (°C)
RESETIN TO RESET DELAY (µs)
11095-25 -10 5 35 50 6520 80
0.25
0.50
0.75
1.00
1.25
1.50
1.75
2.00
0
-40 125
RESETIN FROM 2V TO 0V
100mV OVERDRIVE
50mV OVERDRIVE
RESETIN/WATCHDOG PERIOD
vs. SUPPLY VOLTAGE
MAX16997/98 toc08
SUPPLY VOLTAGE (V)
RESET/WATCHDOG TIMEOUT PERIOD (ms)
36328 12 16 2420 28
1
2
3
4
5
6
7
8
0
440
WATCHDOG TIMEOUT
PERIOD (C
SWT
= 680pF)
RESET TIMEOUT
PERIOD (C
SRT
= 680pF)
RESETIN/WATCHDOG PERIOD
vs. SUPPLY VOLTAGE
MAX16997/98 toc09
SUPPLY VOLTAGE (V)
RESET/WATCHDOG TIMEOUT PERIOD (ms)
363224 2812 16 208
20
30
40
50
60
70
80
90
100
110
10
440
WATCHDOG TIMEOUT
PERIOD (C
SWT
= 10nF)
RESET TIMEOUT
PERIOD (C
SRT
= 10nF)
I
RAMP
vs. TEMPERATURE
MAX16997/98 toc10
TEMPERATURE (°C)
I
RAMP
(nA)
1109565 80-10 5 20 35 50-25
475
480
485
490
495
500
505
510
515
520
470
-40 125
RESET OUTPUT VOLTAGE
vs. SINK CURRENT
MAX16997/98 toc11
SINK CURRENT (mA)
RESET OUTPUT VOLTAGE (V)
2.52.01.51.00.5
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0
03.0
ENABLE OUTPUT VOLTAGE
vs. SINK CURRENT
MAX16997/98 toc12
SINK CURRENT (mA)
ENABLE OUTPUT VOLTAGE (V)
25205 10 15
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0
030