Datasheet

LTC2928
7
2928f
TYPICAL PERFORMANCE CHARACTERISTICS
Reference Output Voltage vs
Temperature
Comparator Under-Voltage
Glitch Immunity
Comparator Over-Voltage
Glitch Immunity
ON Threshold Voltage (Rising) vs
Temperature
Relative Reset Output Voltage vs
V
CC
(with Reset Pull-Up Resistor
to V
CC
)
RST Pull-Up Current vs
External Voltage on RST
Sequence, Reset and Power-
Good Timing vs Capacitance
Three State Selection Pin Current
vs Pin Voltage
(SQT1, SQT2, MS1, MS2, RDIS)
TEMPERATURE (°C)
–50
1.180
V
REF
(V)
1.184
1.188
1.192
1.196
1.200
–25
02550
2928 G05
75 100
COMPARATOR OVERDRIVE
(% OF RESET THRESHOLD)
0.1
10
GLITCH DURATION ( s)
100
1k
110 100
2928 G15
RESET OCCURS
ABOVE CURVE
COMPARATOR
IGNORES GLITCH
COMPARATOR OVERDRIVE
(% OF OV THRESHOLD)
0.1
10
GLITCH DURATION ( s)
100
1k
110 100
2928 G16
OV OCCURS
ABOVE CURVE
COMPARATOR
IGNORES GLITCH
TEMPERATURE (°C)
–50
0.985
V
ON
(V)
0.990
1.000
0.995
1.005
1.010
1.015
–25
02550
2928 G01
75 100
V
CC
(V)
0.1
0
V
RST
(% OF V
CC
)
30
20
40
10
50
0.3 0.5 0.7 0.9 1.1 1.3
2928 G17
1.5
100k
10k
5k
1k
V
RST
(V)
0
0
I
RST
(µA)
–40
–30
–60
–50
–10
–20
–70
1234
2928 G17
5
V
CC
= 5V
V
CC
= 3.3V
CAPACITANCE (F)
10p 100p
100
TIME (SEC)
10m
10
1n 10n 100n 1
2928 G19
1m
100m
1
RESET AND
POWER-GOOD TIMER
SEQUENCER TIMER
THREE STATE PIN VOLTAGE (V)
0.3
–20
THREE STATE PIN CURRENT (µA)
0
–5
10
15
5
–15
–10
20
0.6 0.9 1.2
2928 G20
1.5
I
FLT(UP)
vs Temperature
TEMPERATURE (°C)
–50
–12
I
FLT(UP)
(µA)
–18
–16
–20
–14
–22
0–25 25 7550
2928 G21
100
V
FLT
= 2.3V