LTC2908
TYPICAL PERFOR A CE CHARACTERISTICS
Specifications are at T
A
= 25°C unless otherwise noted.
1.8V Threshold Voltage
vs Temperature
1.710
THRESHOLD VOLTAGE, V
RT18
(V)
THRESHOLD VOLTAGE, V
RT15
(V)
1.700
1.415
1.410
1.405
1.400
1.395
1.390
1.385
THRESHOLD VOLTAGE, V
RTADJ
(V)
1.690
1.680
1.670
1.660
–50
–25
50
25
0
TEMPERATURE (°C)
I
V1
vs Temperature
33
V1 = 5.0V (A1)/V1 = 3.3V (B1)
31 V2 = 3.3V (A1)/V2 = 2.5V (B1)
V3 = 2.5V (A1)/V3 = 1.8V (B1)
29 V4 = 1.8V (A1)/V4 = 1.5V (B1)
V
ADJ1
= V
ADJ2
= 0.55V
27
I
V1
(µA)
A1
25
23
21
19
17
–50
–25
0
25
50
TEMPERATURE (°C)
75
100
2908 G07
B1
I
V2
(µA)
9
8
7
6
5
4
–50
–25
A1
B1
I
V3
(µA)
I
V4
vs Temperature
TYPICAL TRANSIENT DURATION (µs)
600
500
400
300
200
100
0
0.1
1
10
100
COMPARATOR OVERDRIVE VOLTAGE (% OF V
RTX
)
2908 G11
RESET TIME-OUT PERIOD, t
RST
(ms)
V1 = 5.0V (A1)/V1 = 3.3V (B1)
2.1 V2 = 3.3V (A1)/V2 = 2.5V (B1)
V3 = 2.5V (A1)/V3 = 1.8V (B1)
2.0 V4 = 1.8V (A1)/V4 = 1.5V (B1)
V
ADJ1
= V
ADJ2
= 0.55V
1.9
I
V4
(µA)
2.2
1.8
1.7
1.6
1.5
1.4
–50
–25
50
25
TEMPERATURE (°C)
0
75
100
2908 G10
4
U W
75
2908 G04
1.5V Threshold Voltage
vs Temperature
1.425
1.420
0.5080
0.5060
0.5040
0.5020
0.5000
0.4980
0.4960
0.4940
ADJ Threshold Voltage
vs Temperature
1.380
100
–50
–25
0
25
50
TEMPERATURE (°C)
75
100
0.4920
–50
–25
50
25
TEMPERATURE (°C)
0
75
100
2908 G06
2908 G05
I
V2
vs Temperature
V1 = 5.0V (A1)/V1 = 3.3V (B1)
13 V2 = 3.3V (A1)/V2 = 2.5V (B1)
V3 = 2.5V (A1)/V3 = 1.8V (B1)
12 V4 = 1.8V (A1)/V4 = 1.5V (B1)
11 V
ADJ1
= V
ADJ2
= 0.55V
10
14
I
V3
vs Temperature
V1 = 5.0V (A1)/V1 = 3.3V (B1)
2.1 V2 = 3.3V (A1)/V2 = 2.5V (B1)
V3 = 2.5V (A1)/V3 = 1.8V (B1)
2.0 V4 = 1.8V (A1)/V4 = 1.5V (B1)
V
ADJ1
= V
ADJ2
= 0.55V
1.9
1.8
1.7
1.6
1.5
2.2
50
25
TEMPERATURE (°C)
0
75
100
2908 G08
1.4
–50
–25
0
50
25
TEMPERATURE (°C)
75
100
2908 G09
Typical Transient Duration
vs Comparator Overdrive
700
T
A
= 25°C
250
240
230
220
210
200
190
180
170
160
Reset Time-Out Period (t
RST
)
vs Temperature
RESET OCCURS
ABOVE CURVE
150
–50
–25
0
50
25
TEMPERATURE (°C)
75
100
2908 G12
sn2908 2908fs
LINEAR [ LINEAR INTEGRATED SYSTEMS ]
