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
ELECTRICAL CHARACTERISTICS (LTC2908-A1) The l denotes specifications which apply over the full
operating temperature range, otherwise specifications are TA = 25°C, VCC = 5V unless otherwise noted. (Note 2)
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
VRT50
VRT33
VRT25
VRT18
VRTADJ
5V, 5% Reset Threshold
3.3V, 5% Reset Threshold
2.5V, 5% Reset Threshold
1.8V, 5% Reset Threshold
ADJ, 5% Reset Threshold
V1 Input Threshold
V2 Input Threshold
V3 Input Threshold
V4 Input Threshold
VADJ1, VADJ2 Input Threshold
l 4.600 4.675 4.750
V
l 3.036 3.086 3.135
V
l 2.300 2.338 2.375
V
l 1.656 1.683 1.710
V
l 0.492 0.500 0.508
V
(LTC2908-B1) The l denotes specifications which apply over the full operating temperature range, otherwise specifications are
TA = 25°C, VCC = 3.3V unless otherwise noted. (Note 2)
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
VRT33
3.3V, 5% Reset Threshold
V1 Input Threshold
l 3.036 3.086 3.135
V
VRT25
2.5V, 5% Reset Threshold
V2 Input Threshold
l 2.300 2.338 2.375
V
VRT18
1.8V, 5% Reset Threshold
V3 Input Threshold
l 1.656 1.683 1.720
V
VRT15
1.5V, 5% Reset Threshold
V4 Input Threshold
l 1.380 1.403 1.425
V
VRTADJ
ADJ, 5% Reset Threshold
VADJ1, VADJ2 Input Threshold
l 0.492 0.500 0.508
V
(LTC2908-C1) The l denotes specifications which apply over the full operating temperature range, otherwise specifications are
TA = 25°C, VCC = 2.5V unless otherwise noted. (Note 2)
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
VRT25
2.5V, 5% Reset Threshold
V1 Input Threshold
l 2.300 2.338 2.375
V
VRTADJ
ADJ, 5% Reset Threshold
VADJ1, VADJ2, VADJ3, VADJ4, VADJ5,
Input Threshold
l 0.492 0.500 0.508
V
The l denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25°C. VCC = 5V
for the LT2908-A1, VCC = 3.3V for the LTC2908-B1or VCC = 2.5V for the LTC2908-C1, unless otherwise noted. (Notes 2, 3)
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
VCC
Internal Supply Voltage
RST in Correct Logic State
l 0.5
6
V
IV1
V1 Input Current (Note 4)
V1 = 5.0V (LTC2908-A1)
V1 = 3.3V (LTC2908-B1)
V1 = 2.5V (LTC2908-C1)
l
26
70
μA
l
24
70
μA
l
22
70
μA
IV2
V2 Input Current (Note 4)
V2 = 3.3V (LTC2908-A1)
V2 = 2.5V (LTC2908-B1)
l
10
30
μA
l
8
30
μA
IV3
V3 Input Current
V3 = 2.5V (LTC2908-A1)
V3 = 1.8V (LTC2908-B1)
l
2
5
μA
l
2
5
μA
IV4
V4 Input Current
V4 = 1.8V (LTC2908-A1)
V4 = 1.5V (LTC2908-B1)
l
2
5
μA
l
2
5
μA
IVADJ
VADJ1, VADJ2, VADJ3, VADJ4, VADJ5
Input Current
VADJ1 = VADJ2 = VADJ3 = VADJ4 = VADJ5 = l
0.55V
±15
nA
2908fd
3
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