Datasheet

LTC1727/LTC1728
5
17278fb
Typical perForMance cHaracTerisTics
Reset Pulse Width
vs Temperature
RST, COMPX I
SINK
vs Supply Voltage
I
VCC25
vs Temperature
(LTC1727-2.5/LT1728-2.5)
I
VCC3
vs Temperature (LTC1727-
2.5/LTC1728-2.5/LTC1728-3.3)
I
VCC3
vs Temperature
(LTC1727-5/LTC1728-5)
I
VCC5
vs Temperature
(LTC1727-5/LTC1728-5)
V
CCA
Input Current
vs Input Voltage
V
CCA
Threshold Voltage
vs Temperature
Typical Transient Duration
vs Comparator Overdrive
INPUT VOLTAGE (V)
0.80 0.85 0.95 1.05 1.15
INPUT CURRENT (nA)
0
1.0
1.20
1727/28 G01
–1.0
–2.0
–0.5
–1.5
0.90
1
1.10
2.0
0.5
1.5
T
A
= 25°C
TEMPERATURE (°C)
–60
0.985
V
CCA
THRESHOLD VOLTAGE, V
RTA
(V)
0.990
0.995
1.000
1.005
–20 20
60
100
1727/28 G02
1.010
1.015
–40 0
40
80
RESET COMPARATOR OVERDRIVE VOLTAGE (% OF V
CC
)
0.1
250
TYPICAL TRANSIENT DIRATION (µs)
300
350
400
450
1 10 100
1727/28 G03
200
150
50
0
100
RESET OCCURS
ABOVE CURVE
T
A
= 25°C
TEMPERATURE (°C)
–60 –40
RESET PULSE WIDTH, t
RST
(ms)
220
240
260
60
1727/28 G04
200
180
–20 20 40 800 100
160
140
280
V
CC3
OR V
CC5
(V)
0
0
I
SINK
(mA)
2
4
6
1
2
3 4
1727/28 G05
5
8
10
1
3
5
7
9
6
V
OL
= 0.4V
T
A
= 25°C
V
OL
= 0.2V
TEMPERATURE (°C)
–60
0.5
I
VCC25
(µA)
0.6
0.8
0.9
1.0
1.5
1.2
–20
20
40
1727/28 G06
0.7
1.3
1.4
1.1
–40 0
60
80
100
V
CC3
= 3.3V
V
CC25
= 2.5V
V
CCA
= 3.3V
TEMPERATURE (°C)
–60
5
I
VCC3
(µA)
6
8
9
10
15
12
–20
20
40
1727/28 G07
7
13
14
11
–40 0
60
80
100
V
CC3
= 3.3V
V
CC25
= 2.5V
V
CCA
= 3.3V
TEMPERATURE (°C)
–60
0.5
I
VCC3
(µA)
0.6
0.8
0.9
1.0
1.5
1.2
–20
20
40
1727/28 G08
0.7
1.3
1.4
1.1
–40 0
60
80
100
V
CC5
= 5V
V
CC3
= 3.3V
V
CCA
= 3.3V
TEMPERATURE (°C)
–60
5
I
VCC5
(µA)
6
8
9
10
15
12
–20
20
40
1727/28 G09
7
13
14
11
–40 0
60
80
100
V
CC5
= 5V
V
CC3
= 3.3V
V
CCA
= 3.3V