MAX791 Maxim, MAX791 Datasheet - Page 5

• Manufacturer Part Number: MAX791
• Description: Microprocessor Supervisory Circuit
• Manufacturer: Maxim

__________________________________________Typical Operating Characteristics
(T
A
4.75
4.70
4.65
4.60
4.55
4.50
4.45
4.40
4.35
4.30
4.80
= +25°C, unless otherwise noted.)
54
50
46
42
38
58
20
15
10
5
V
-60
-60
-60
CC
SUPPLY CURRENT vs. TEMPERATURE
-30
VBATT-to-V
VBATT = 2.0V
VBATT = 4.5V
VBATT = 2.8V
(NORMAL OPERATING MODE)
-30
-30
0
TEMPERATURE (°C)
RESET THRESHOLD
vs. TEMPERATURE
vs. TEMPERATURE
TEMPERATURE (°C)
0
TEMPERATURE (°C)
0
_______________________________________________________________________________________
30
OUT
30
30
ON-RESISTANCE
60
60
60
V
VBATT = 2.8V
PFI, CE IN = 0V
CC
VBATT = 0V,
POWER DOWN
90
90
90
= +5V
V
CC
Microprocessor Supervisory Circuit
120
120
120
= 0V
150
150
150
600
500
400
300
200
100
1.5
0.5
1.2
1.1
1.0
0.9
0.8
0.7
0.6
BATTERY SUPPLY CURRENT vs. TEMPERATURE
2
1
0
0
-60
-60
-60
-30
V
-30
-30
RESET OUTPUT RESISTANCE
(BATTERY-BACKUP MODE)
CC
-to-V
vs. TEMPERATURE
vs. TEMPERATURE
0
TEMPERATURE (°C)
TEMPERATURE (°C)
0
0
TEMPERATURE (°C)
OUT
30
30
30
V
SINKING CURRENT
CC
ON-RESISTANCE
V
SOURCING CURRENT
CC
= 0V, VBATT = 2.8V
60
60
= +5V, VBATT = 2.8V
60
V
VBATT = 0V
90
90
90
V
VBATT = 2.8V
NO LOAD
CC
CC
= +5V,
= 0V
120
120
120
150
150
150
1.25
1.00
0.75
0.50
0.25
1.50
120
100
230
220
210
200
190
180
170
80
60
40
0
-60
-60
-60
V
VBATT = 2.8V
CC
-30
CHIP-ENABLE ON-RESISTANCE
-30
-30
= 0V TO 5V STEP
0
vs. TEMPERATURE
vs. TEMPERATURE
vs. TEMPERATURE
TEMPERATURE (°C)
TEMPERATURE (°C)
0
TEMPERATURE (°C)
0
PFI THRESHOLD
RESET DELAY
30
30
30
60
60
60
90
V
VBATT = 0V,
NO LOAD ON PFO
CC
V
VBATT = 2.8V
CE IN = V
= +5V,
90
90
CC
120
= +4.75V
120
120
150 180
CC
/2
150
150
5