3.0V/3.3V Microprocessor Supervisory Circuits
__________________________________________Typical Operating Characteristics
(T
A
= +25擄C, unless otherwise noted.)
V
CC
-to-V
OUT
ON-RESISTANCE
vs. TEMPERATURE
MAX690-806 TOC01
MAX690T/S/R, 704T/S/R, 802T/S/R, 804鈥?06T/S/R
VBATT-to-V
OUT
ON-RESISTANCE
vs. TEMPERATURE
MAX690-806 TOC02
SUPPLY CURRENT
vs. TEMPERATURE
V
CC
= 5V
SUPPLY CURRENT (碌A(chǔ))
45
MAX690-806 TOC03
5
VBATT = 3.0V
V
CC
-to-V
OUT
ON-RESISTANCE (鈩?
4
V
CC
= 2.5V
3
V
CC
= 3.3V
180
VBATT-to-V
OUT
ON-RESISTANCE (鈩?
V
CC
= 0V
140
VBATT = 3V
100
VBATT = 3.3V
60
VBATT = 5V
20
VBATT = 2V
50
40
VBATT = 3V
PFI = GND
MR/WDI FLOATING
V
CC
= 3.3V
2
V
CC
= 5V
35
1
30
V
CC
= 2.5V
25
鈥?0 鈥?0 鈥?0 0
20 40 60 80 100 120 140
0
鈥?0 鈥?0 鈥?0 0
20 40 60 80 100 120 140
TEMPERATURE (擄C)
鈥?0 鈥?0 鈥?0 0
20 40 60 80 100 120 140
TEMPERATURE (擄C)
TEMPERATURE (擄C)
BATTERY SUPPLY CURRENT
vs. TEMPERATURE
MAX690-806 TOC04
RESET TIMEOUT PERIOD
vs. TEMPERATURE
MAX690-806 TOC05
RESET-COMPARATOR PROPAGATION
DELAY vs. TEMPERATURE
VBATT = 3.0V
100mV OVERDRIVE
PROPAGATION DELAY (碌s)
26
MAX690-806 TOC06
10,000
BATTERY SUPPLY CURRENT (nA)
V
CC
= 0V
PFI = GND
1000
VBATT = 5V
216
RESET TIMEOUT PERIOD (ms)
30
212
V
CC
= 5V
100
VBATT = 3V
208
VBATT = 3.0V
22
10
204
18
1
VBATT = 2V
0.1
鈥?0 鈥?0 鈥?0 0
20 40 60 80 100 120 140
TEMPERATURE (擄C)
200
V
CC
= 3.3V
196
鈥?0 鈥?0 鈥?0 0
20 40 60 80 100 120 140
TEMPERATURE (擄C)
14
10
鈥?0 鈥?0 鈥?0 0
20 40 60 80 100 120 140
TEMPERATURE (擄C)
PFI THRESHOLD
vs. TEMPERATURE
MAX690-806 TOC07
NORMALIZED RESET THRESHOLD
vs. TEMPERATURE
NORMALIZED RESET THRESHOLD (V)
MAX690-806 TOC08
1.240
V
CC
= 3.3V
1.238
PFI THRESHOLD (V)
V
CC
= 5V
1.004
1.002
1.236
V
CC
= 2.5V
1.234
1.000
0.998
1.232
VBATT = 3.0V
1.230
鈥?0 鈥?0 鈥?0 0
20 40 60 80 100 120 140
TEMPERATURE (擄C)
0.996
VBATT = 3.0V
0.994
鈥?0 鈥?0 鈥?0 0
20 40 60 80 100 120 140
TEMPERATURE (擄C)
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5