LTC1728(Old_V) データシートの表示（PDF） - Linear Technology
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LTC1728
(Rev.:Old_V)
(Rev.:Old_V)
Linear Technology
LTC1728 Datasheet PDF : 16 Pages
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LTC1727/LTC1728
TYPICAL PERFOR A CE CHARACTERISTICS
VCCA Input Current
vs Input Voltage
2.0
TA = 25°C
1.5
1.0
0.5
0
– 0.5
–1.0
–1.5
– 2.0
0.80 0.85 0.90 0.95 1 1.05 1.10 1.15 1.20
INPUT VOLTAGE (V)
1727/28 G01
Reset Pulse Width
vs Temperature
280
260
240
220
200
180
160
140
–60 –40 –20 0 20 40 60
TEMPERATURE (°C)
80 100
1727/28 G04
IVCC3 vs Temperature
(LTC1727-2.5/LT1728-2.5)
15
VCC3 = 3.3V
14 VCC25 = 2.5V
13 VCCA = 3.3V
12
11
10
9
8
7
6
5
– 60 –40 – 20 0 20 40 60 80 100
TEMPERATURE (°C)
1727/28 G07
VCCA Threshold Voltage
vs Temperature
1.015
1.010
1.005
1.000
0.995
0.990
0.985
–60 –40 –20 0 20 40 60
TEMPERATURE (°C)
80 100
1727/28 G02
RST, COMPX ISINK
vs Supply Voltage
10
TA = 25°C
9
8
VOL = 0.4V
7
6
5
4
3
VOL = 0.2V
2
1
0
0
1
2
3
4
5
6
VCC3 OR VCC5 (V)
1727/28 G05
IVCC3 vs Temperature
(LTC1727-5/LTC1728-5)
1.5
VCC5 = 5V
1.4 VCC3 = 3.3V
1.3 VCCA = 3.3V
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
– 60 –40 – 20 0 20 40 60 80 100
TEMPERATURE (°C)
1727/28 G08
Typical Transient Duration
vs Comparator Overdrive
450
TA = 25°C
400
350
RESET OCCURS
300
ABOVE CURVE
250
200
150
100
50
0
0.1
1
10
100
RESET COMPARATOR OVERDRIVE VOLTAGE (% OF VCC)
1727/28 G03
IVCC25 vs Temperature
(LTC1727-2.5/LT1728-2.5)
1.5
1.4
VCC3 = 3.3V
VCC25 = 2.5V
1.3 VCCA = 3.3V
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
– 60 –40 – 20 0 20 40 60 80 100
TEMPERATURE (°C)
1727/28 G06
IVCC5 vs Temperature
(LTC1727-5/LTC1728-5)
15
VCC5 = 5V
14 VCC3 = 3.3V
13 VCCA = 3.3V
12
11
10
9
8
7
6
5
– 60 –40 – 20 0 20 40 60 80 100
TEMPERATURE (°C)
1727/28 G09
4
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