Datasheet

MAX793/MAX794/MAX795
3.0V/3.3V/Adjustable Microprocessor
Supervisory Circuits
_______________________________________________________________________________________ 5
3.0
2.8
2.6
2.4
2.2
2.0
1.8
1.6
1.4
1.2
1.0
-40 100
V
CC
-TO-OUT ON-RESISTANCE
vs. TEMPERATURE
MAX793 TOC1
TEMPERATURE (°C)
V
CC
-TO-OUT ON-RESISTANCE (Ω)
20-20 0 8040 60
I
OUT
= 30mA
V
CC
= 3.0V
V
CC
= 3.3V
V
CC
= 5V
160
140
120
100
80
60
40
-40 100
BATT-TO-OUT ON-RESISTANCE
vs. TEMPERATURE
MAX793 TOC2
TEMPERATURE (°C)
BATT-TO-OUT ON-RESISTANCE (Ω)
20-20 0 8040 60
V
BATT
= 3.6V
V
BATT
= 3.0V
V
BATT
= 5V
I
OUT
= 250µA
V
CC
= 0V
70
60
50
40
30
20
10
0
-40 100
V
CC
SUPPLY CURRENT vs. TEMPERATURE
(NORMAL OPERATING MODE)
MAX793 TOC3
TEMPERATURE (°C)
V
CC
SUPPLY CURRENT (µA)
20-20 0 8040 60
MAX793/4, V
CC
= 3.3V
MAX795, V
CC
= 3.3V
MAX793/4, V
CC
= 5V
V
BATT
= V
CC
= V
OUT
MAX795, V
CC
= 5V
0.10
0.08
0.06
0.04
0.02
0
-40 100
BATTERY SUPPLY CURRENT vs.
TEMPERATURE (BATTERY-BACKUP MODE)
MAX793 TOC4
TEMPERATURE (°C)
SUPPLY CURRENT (µA)
20-20 0 8040 60
V
CC
= 0V
V
BATT
= 3.6V
100
90
80
70
60
50
40
30
20
10
0
-40 100
MAX793
LOWLINE-TO-RESET THRESHOLD
vs. TEMPERATURE
MAX793 TOC7
TEMPERATURE (°C)
LOWLINE-TO-RESET THRESHOLD (mV)
20-20 0 8040 60
V
CC
FALLING
250
200
150
100
50
0
-40 100
RESET TIMEOUT PERIOD
vs. TEMPERATURE
MAX793 TOC5
TEMPERATURE (°C)
RESET TIMEOUT PERIOD (ms)
20-20 0 8040 60
V
CC
RISING FROM
OV TO V
RST
MAX
30
25
20
15
10
5
0
-40 100
RESET COMPARATOR PROPAGATION DELAY
vs. TEMPERATURE (V
CC
FALLING)
MAX793 TOC6
TEMPERATURE (°C)
PROPAGATION DELAY (µs)
20-20 0 8040 60
10
8
6
4
2
0
-40 100
MAX793/MAX794
LOWLINE COMPARATOR PROPAGATION DELAY
vs. TEMPERATURE
MAX793 TOC8
TEMPERATURE (°C)
PROPAGATION DELAY (µs)
20-20 0 8040 60
40mV OVERDRIVE
V
CC
RISING
V
CC
FALLING
1.250
1.245
1.240
1.235
1.230
-40 100
MAX793/MAX794
PFI THRESHOLD vs. TEMPERATURE
MAX793 TOC9
TEMPERATURE (°C)
PFI THRESHOLD (V)
20-20 0 8040 60
__________________________________________Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted.)