LT1111C データシートの表示（PDF） - Linear Technology
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LT1111C Datasheet PDF : 16 Pages
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LT1111
TYPICAL PERFOR A CE CHARACTERISTICS
Oscillator Frequency
100
90
80
70
60
50
40
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
LT1111 • TPC01
Duty Cycle
60
58
56
54
52
50
48
46
44
42
40
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
LT1111 • TPC04
Switch ON Voltage
Step-Down Mode
2.00
VIN = 12V
ISW = 650mA
1.75
1.50
1.25
1.00
0.75
0.50
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
LT1111 • TPC07
Oscillator Frequency
75
74
73
72
71
70
69
68
67
0 3 6 9 12 15 18 21 24 27 30
INPUT VOLTAGE (V)
LT1111 • TPC02
Saturation Voltage
Step-Up Mode
1.0
0.9
VIN = 3V
ISW = 650mA
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
–50 – 25
0 25 50 75 100 125
TEMPERATURE (°C)
LT1111 • TPC05
Switch ON Voltage
Step-Down Mode
1.4
VIN = 12V
1.2
1.0
0.8
0.6
0.4
0.2
0
0
0.2
0.4
0.6
0.8
1.0
SWITCH CURRENT (A)
LT1111 • TPC08
Switch ON Time
10
9.5
9.0
8.5
8.0
7.5
7.0
6.5
6.0
5.5
5.0
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
LT111 • TPC03
Saturation Voltage
Step-Up Mode
1.4
1.2
VIN = 2V
1.0
VIN = 3V
0.8
VIN = 5V
0.6
0.4
0.2
0
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
SWITCH CURRENT (A)
LT1111 • TPC06
Minimum/Maximum Frequency
vs ON Time
100
90
0°C ≤ TA ≤ 70°C
80
70
60
50
–55°C ≤ TA ≤ 125°C
40
4 5 6 7 8 9 10 11 12
SWITCH ON TIME (µs)
LT1111 • TPC09
1111fd
4
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