LTC2908 Linear Technology, LTC2908 Datasheet - Page 5

• Manufacturer Part Number: LTC2908
• Description: Precision Six Input Supply Monitor
• Manufacturer: Linear Technology

TYPICAL PERFORMANCE CHARACTERISTICS
Specifi cations are at T
1.710
1.700
1.690
1.680
1.670
1.660
2.1
2.0
1.8
1.7
1.6
1.4
2.2
1.9
1.5
33
31
29
27
25
23
21
19
17
–50
–50
–50
1.8V Threshold Voltage
vs Temperature
I
I
V1
V1 = 5.0V (A1)/V1 = 3.3V (B1)/V1 = 2.5V (C1)
V2 = 3.3V (A1)/V2 = 2.5V (B1)
V3 = 2.5V (A1)/V3 = 1.8V (B1)
V4 = 1.8V (A1)/V1 = 1.5V (B1)
V
V
V4
V1 = 5.0V (A1)/V1 = 3.3V (B1)
V2 = 3.3V (A1)/V2 = 2.5V (B1)
V3 = 2.5V (A1)/V3 = 1.8V (B1)
V4 = 1.8V (A1)/V4 = 1.5V (B1)
V
ADJ1
ADJ4
ADJ1
vs Temperature
vs Temperature
–25
–25
–25
= V
=V
= V
ADJ5
ADJ2
ADJ2
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
0
0
= 0.55V
0
= V
= 0.55V
A1
ADJ3
A
25
25
25
= 25°C unless otherwise noted.
=
C1
50
50
50
B1
75
75
75
2908 G04
2908 G07
2908 G10
100
100
100
1.425
1.415
1.410
1.405
1.400
1.395
1.390
1.385
1.380
1.420
700
600
500
400
300
200
100
12
11
14
13
10
0
9
8
7
5
4
6
–50
–50
0.1
COMPARATOR OVERDRIVE VOLTAGE (% OF V
1.5V Threshold Voltage
vs Temperature
I
Typical Transient Duration
vs Comparator Overdrive
V2
V1 = 5.0V (A1)/V1 = 3.3V (B1)
V2 = 3.3V (A1)/V2 = 2.5V (B1)
V3 = 2.5V (A1)/V3 = 1.8V (B1)
V4 = 1.8V (A1)/V4 = 1.5V (B1)
V
ADJ1
vs Temperature
–25
–25
= V
ADJ2
TEMPERATURE (°C)
TEMPERATURE (°C)
1
0
0
= 0.55V
A1
RESET OCCURS
25
ABOVE CURVE
25
50
50
10
B1
T
A
75
75
= 25°C
2908 G05
2908 G11
2908 G08
RTX
100
100
100
)
0.5000
0.4960
0.4920
0.5080
0.5060
0.5040
0.5020
0.4980
0.4940
230
220
200
190
180
160
150
250
240
210
170
2.2
2.1
2.0
1.9
1.8
1.7
1.6
1.4
1.5
–50
–50
–50
I
ADJ Threshold Voltage
vs Temperature
Reset Time-Out Period (t
vs Temperature
V3
V1 = 5.0V (A1)/V1 = 3.3V (B1)
V2 = 3.3V (A1)/V2 = 2.5V (B1)
V3 = 2.5V (A1)/V3 = 1.8V (B1)
V4 = 1.8V (A1)/V4 = 1.5V (B1)
V
ADJ1
vs Temperature
–25
–25
–25
= V
ADJ2
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TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
0
0
0
= 0.55V
LTC2908
25
25
25
50
50
50
RST
75
75
75
)
2908 G09
2908 G12
2908 G06
2908fc
5
100
100
100