Microprocessor Supervisory Circuits
MAX691A/MAX693A/MAX800L/MAX800M
____________________________Typical Operating Characteristics (continued)
(T
A
= +25°C, unless otherwise noted.)
BATTERY CURRENT
vs. INPUT SUPPLY VOLTAGE
WATCHDOG AND RESET TIMEOUT PERIOD (sec)
MAX691A TOC-10
WATCHDOG AND RESET TIMEOUT PERIOD
vs. OSC IN TIMING CAPACITOR (COSC)
MAX691A TOC-11
CHIP-ENABLE PROPAGATION DELAY
vs. CE OUT LOAD CAPACITANCE
V
CC
= 5V
CE IN = 0V
TO 5V
DRIVER SOURCE
MAX691A TOC-12
20
VBATT = 2.8V
I
OUT
= 0A
100
V
CC
= 5V
VBATT = 2.8V
20
LONG WATCHDOG
TIMEOUT PERIOD
10
RESET ACTIVE
TIMEOUT PERIOD
I
BATT
(μA)
12
PROPAGATION DELAY (ns)
16
16
12
8
8
1
SHORT WATCHDOG
TIMEOUT PERIOD
4
4
0
0
1
2
V
CC
(V)
3
4
5
0.1
10
100
COSC (pF)
1000
0
0
50
100
150
C
LOAD
(pF)
200
250
300
V
CC
to V
OUT
vs. OUTPUT CURRENT
(NORMAL OPERATING MODE)
MAX691A TOC-13
VBATT to V
OUT
vs. OUTPUT CURRENT
(BATTERY-BACKUP MODE)
V
CC
= 0V
VBATT = 4.5V
MAX691A TOC-14
V
CC
to LOW LINE
AND CE OUT DELAY
5V
V
CC
RESET
THRESHOLD
80μs
HI
LOW LINE
LO
MAX691A TOC-15
1000
V
CC
= 4.5V
VBATT = 0V
1000
100
VBATT to V
OUT
(mV)
V
CC
to V
OUT
(mV)
100
800ns
10
SLOPE = 0.8Ω
10
SLOPE = 8Ω
HI
RESET
LO
HI
CE OUT
12μs
1
1
10
I
OUT
(mA)
100
1000
1
1
10
I
OUT
(mA)
100
LO
6
_______________________________________________________________________________________
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
