Datasheet

4
LTC2901
2901fb
TI I G DIAGRA S
WUW
V
X
Monitor Timing
t
RST
2901 TD
V
RTX
V
X
RST
COMPX
t
UV
1.5V
Watchdog Timing (LTC2901-1/LTC2901-2)
t
RST
t
WP
t
WD
t
WD
2901 TD2
RST
WDI
WDO
TEST CIRCUITS
Figure 1. RST, WDO, COMPX V
OH
Test
V1
V2
V3
V4
2901 F01
LTC2901-1
LTC2901-3
RST, WDO
OR COMPX
I
SOURCE
1μA
Figure 2. RST, WDO, COMPX V
OL
Test
V1
V2
V3
V4
2901 F02
LTC2901-1
LTC2901-3
I
SINK
2.5mA,
100μA
RST, WDO
OR COMPX
Figure 3. Active Pull-Up RST V
OH
Test
V1
V2
V3
V4
2901 F03
LTC2901-2
LTC2901-4
RST
I
SOURCE
200μA
Watchdog Timing (LTC2901-3/LTC2901-4)
t
RST
t
RST
t
WP
t
WD
2901 TD3
RST
WDI