LTC2908 データシートの表示（PDF） - Linear Technology
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LTC2908 Datasheet PDF : 18 Pages
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LTC2908
TYPICAL PERFORMANCE CHARACTERISTICS
Specifications are at TA = 25°C unless otherwise noted.
1.8V Threshold Voltage
vs Temperature
1.710
1.5V Threshold Voltage
vs Temperature
1.425
1.700
1.420
1.415
1.690
1.410
1.405
1.680
1.400
1.395
1.670
1.390
1.385
1.660
–50 –25
0 25 50
TEMPERATURE (°C)
75 100
2908 G04
1.380
–50
–25 0 25 50
TEMPERATURE (°C)
75 100
2908 G05
ADJ Threshold Voltage
vs Temperature
0.5080
0.5060
0.5040
0.5020
0.5000
0.4980
0.4960
0.4940
0.4920
–50 –25 0
25 50 75 100
TEMPERATURE (°C)
2908 G06
IV1 vs Temperature
33
V1 = 5.0V (A1)/V1 = 3.3V (B1)/V1 = 2.5V (C1)
31 V2 = 3.3V (A1)/V2 = 2.5V (B1)
V3 = 2.5V (A1)/V3 = 1.8V (B1)
29 V4 = 1.8V (A1)/V1 = 1.5V (B1)
VADJ1 = VADJ2 = VADJ3 =
27 VADJ4 =VADJ5 = 0.55V
A1
B1
25
23
C1
21
19
17
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
2908 G07
IV4 vs Temperature
2.2
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)
VADJ1 = VADJ2 = 0.55V
1.9
1.8
1.7
1.6
1.5
1.4
–50 –25 0
25 50 75 100
TEMPERATURE (°C)
2908 G10
IV2 vs Temperature
14
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 VADJ1 = VADJ2 = 0.55V
10
A1
B1
9
8
7
6
5
4
–50 –25 0
25 50 75 100
TEMPERATURE (°C)
2908 G08
Typical Transient Duration
vs Comparator Overdrive
700
TA = 25°C
600
500
RESET OCCURS
ABOVE CURVE
400
300
200
100
0
0.1
1
10
100
COMPARATOR OVERDRIVE VOLTAGE (% OF VRTX)
2908 G11
IV3 vs Temperature
2.2
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)
VADJ1 = VADJ2 = 0.55V
1.9
1.8
1.7
1.6
1.5
1.4
–50 –25 0
25 50 75 100
TEMPERATURE (°C)
2908 G09
Reset Time-Out Period (tRST)
vs Temperature
250
240
230
220
210
200
190
180
170
160
150
–50 –25 0
25 50 75 100
TEMPERATURE (°C)
2908 G12
2908fd
5
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