Datasheet

MAX791
Microprocessor Supervisory Circuit
6 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(T
A
= +25°C, unless otherwise noted.)
1000
1
1 100 1000
V
CC
to V
OUT
vs.
OUTPUT CURRENT
10
100
MAX791-13
I
OUT
(mA)
V
CC
- V
OUT
(mV)
10
V
CC
= 4.5V
VBATT = 0V
SLOPE = 0.8Ω
1000
1
110100
VBATT to V
OUT
vs.
OUTPUT CURRENT
MAX791-14
I
OUT
(mA)
VBATT - V
OUT
(mV)
10
100
V
CC
= 0V
VBATT = 4.5V
SLOPE = 8Ω
0
50
0
40
20
WATCHDOG TIMEOUT
vs. TIMING CAPACITOR
MAX791-11
TIMING CAPACITOR (nF)
WATCHDOG TIMEOUT (ms)
3010 70 80 90 1006050
100
150
200
250
V
CC
= +5V
VBATT = 2.8V
0
4
0 10050
CHIP-ENABLE PROPAGATION DELAY
vs. CE OUT LOAD CAPACITANCE
MAX791-12
C
LOAD
(pF)
PROPAGATION DELAY (ns)
200 250 300150
8
12
16
20
V
CC
= +5V
CE IN = 0V TO 5V
DRIVER SOURCE
IMPEDANCE = 50Ω
0
4
8
15
BATTERY CURRENT
vs. INPUT SUPPLY VOLTAGE
MAX791-10
V
CC
(V)
I
BATT
(µA)
0432
12
16
20
VBATT = 2.8V,
I
OUT
= 0A