LT1111 LINER [Linear Technology], LT1111 Datasheet - Page 4

• Manufacturer Part Number: LT1111
• Description: Micropower DC/DC Converter Adjustable and Fixed 5V, 12V
• Manufacturer: LINER [Linear Technology]

LT11 11
TYPICAL PERFOR
4
2.00
1.75
1.50
1.25
1.00
0.75
0.50
100
60
58
56
54
52
50
48
46
40
90
80
70
60
50
40
44
42
–50
–50
–50 –25
Oscillator Frequency
Duty Cycle
Switch ON Voltage
Step-Down Mode
V
I
SW =
IN
–25
–25
= 12V
650mA
0
0
0
TEMPERATURE ( C)
TEMPERATURE ( C)
TEMPERATURE ( C)
25
25
25
50
50
50
75
75
75
W
LT1111 • TPC01
LT1111 • TPC04
LT1111 • TPC07
100
100
100
A
U
125
125
125
CE
C
HARA TERISTICS
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
1.4
1.2
1.0
0.8
0.6
0.4
0.2
75
74
73
72
71
70
69
68
67
0
0
–50 – 25
0
0
Saturation Voltage
Step-Up Mode
Switch ON Voltage
Step-Down Mode
Oscillator Frequency
V
I
V
SW =
IN
IN
3
= 3V
= 12V
650mA
0.2
6
C
SWITCH CURRENT (A)
0
INPUT VOLTAGE (V)
TEMPERATURE ( C)
9
12
0.4
25
15 18 21
50
0.6
75
LT1111 • TPC02
LT1111 • TPC05
0.8
24 27 30
LT1111 • TPC08
100
125
1.0
100
6.5
9.5
9.0
8.5
8.0
7.5
7.0
6.0
5.5
5.0
1.4
1.2
1.0
0.8
0.6
0.4
0.2
10
90
80
70
60
50
40
0
–50
0
4
Switch ON Time
Saturation Voltage
Step-Up Mode
Minimum/Maximum Frequency
vs ON Time
–55 C T
–25
0.2
5
0.4
A
6
SWITCH CURRENT (A)
SWITCH ON TIME ( s)
0
TEMPERATURE ( C)
125 C
0.6
7
25
0.8
8
50
V
IN
1.0
0 C T
9
= 2V
75
1.2
10
A
LT1111 • TPC06
LT1111 • TPC09
V
LT111 • TPC03
V
IN
100
IN
1.4
70 C
11
= 5V
= 3V
125
1.6
12