Datasheet

LT3688
7
3688f
TYPICAL PERFORMANCE CHARACTERISTICS
Power-On Reset Threshold
vs Temperature
Typical Transient Duration
vs Comparator Overdrive
Watchdog Window Mode Period
vs Temperature
Reset Timeout Period (t
RST
)
vs Temperature
T
A
= 25°C unless otherwise noted.
TEMPERATURE (°C)
–50 –25 0 25 50 75 100 125 150
0.710
V
UV
(V)
0.725
0.715
0.720
0.730
3688 G23
OVERDRIVE VOLTAGE (% of V
UV
)
0.1 1 10 100
0
RESET DELAY (µs)
600
100
200
300
400
500
700
3688 G24
TEMPERATURE (°C)
C
WDT
= 1000pF
–50 –25 0 25 50 75 100 125 150
0
t
WDU
(ms)
5
10
15
20
25
3688 G26
TEMPERATURE (°C)
C
POR
= 4700pF
–50 –25 0 25 50 75 100 125 150
0
t
RST
(ms)
5
10
15
20
25
30
3688 G27
Reset Timeout Period (t
RST
)
vs Capacitance
C
POR
(nF)
0.001 0.1 10 1000 100000
0.01
t
RST
(ms)
0.1
10
100
1000
10000
1
100000
3688 G28
Watchdog Window Lower
Boundary (t
WDL
) vs Capacitance
Watchdog Window Upper
Boundary (t
WDU
) vs Capacitance
C
WDT
(nF)
0.001 0.1 10 1000 100000
0.01
t
WDL
(ms)
0.1
10
100
1000
10000
1
100000
3688 G29
C
WDT
(nF)
0.001 0.1 10 1000 100000
0.1
t
WDU
(ms)
1
10
100
1000
10000
100000
3688 G30