Datasheet

LTC2917/LTC2918
13
29178fb
TYPICAL APPLICATIONS
1V Supply Monitor with Windowed Watchdog Timeout
and Internal Timers Selected
12V Supply Monitor with 20ms Reset Timeout and 3.4s
Watchdog Timeout, with 3.3V Logic Out
9V, –15% Tolerance Supply Monitor ith 1.8V Logic Out
3.3V
3.3V
1V
C
BYPASS
0.1μF
R
PU
10k
29178 TA02
VM
SEL1 GND
SEL2
GND RTWT
TOL
V
CC
V
CC
LTC2917-B μP
RST
RST
WDI I/O
t
WDU
= 1.6s
t
WDL
= 50ms
t
RST
= 200ms
3.3V
12V
C
BYPASS
0.1μF
R
PU
10k
29178 TA03
VM
SEL1 GND
SEL2
GND RTWT
TOL
V
CC
V
CC
LTC2917-A μP
RST
RST
WDI I/O
C
WT
0.047μF
C
RT
0.0022μF
1.8V
9V
C
BYPASS
0.1μF
R
PU
10k
29178 TA04
VM
SEL1 GND
SEL2
TOL
V
CC
V
CC
LTC2917-A μP
RST
RST
WDI I/O
GND
R2
866k
R1
51.1k
C
RT
RT
C
WT
WT