Microprocessor Supervisory Circuit
MAX791
____________________________Typical Operating Characteristics (continued)
(T
A
= +25°C, unless otherwise noted.)
BATTERY CURRENT
vs. INPUT SUPPLY VOLTAGE
MAX791-10
WATCHDOG TIMEOUT
vs. TIMING CAPACITOR
MAX791-11
CHIP-ENABLE PROPAGATION DELAY
vs. CE OUT LOAD CAPACITANCE
MAX791-12
20
16
VBATT = 2.8V,
I
OUT
= 0A
250
V
CC
= +5V
VBATT = 2.8V
WATCHDOG TIMEOUT (ms)
200
20
PROPAGATION DELAY (ns)
16
I
BATT
(µA)
12
150
12
8
100
8
V
CC
= +5V
CE IN = 0V TO 5V
DRIVER SOURCE
IMPEDENCE = 50Ω
4
0
0
1
2
V
CC
(V)
3
4
5
50
0
0 10 20 30 40 50 60 70 80 90 100
TIMING CAPACITOR (nF)
4
0
0
50
100
150
200
250
300
C
LOAD
(pF)
V
CC
to V
OUT
vs.
OUTPUT CURRENT
MAX791-13
VBATT to V
OUT
vs.
OUTPUT CURRENT
MAX791-14
1000
1000
100
SLOPE = 0.8Ω
10
V
CC
= 4.5V
VBATT = 0V
1
1
10
I
OUT
(mA)
100
1000
VBATT - V
OUT
(mV)
V
CC
- V
OUT
(mV)
100
SLOPE = 8Ω
10
V
CC
= 0V
VBATT = 4.5V
1
1
10
I
OUT
(mA)
100
6
_______________________________________________________________________________________
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
