LT1110 Linear Technology, LT1110 Datasheet - Page 4

• Manufacturer Part Number: LT1110
• Description: Micropower DC-DC Converter Adjustable and Fixed 5V/ 12V
• Manufacturer: Linear Technology

TYPICAL PERFOR
4
LT1110
500
450
400
350
300
250
200
150
100
1.4
1.2
1.0
0.8
0.6
0.4
0.2
64
78
76
74
72
70
68
66
62
60
58
0
–50
–50
0
Duty Cycle
Switch On Voltage
Step-Down Mode
Quiescent Current
V
–25
–25
IN
0.2
= 12V
TEMPERATURE ( C)
TEMPERATURE ( C)
0
0
0.4
I
SWITCH
25
25
(A)
0.6
50
50
W
0.8
LT1110 • TPC10
LT1110 • TPC04
LT1110 • TPC07
75
75
A
U
100
100
1.0
CE
C
HARA TERISTICS
100
500
450
400
350
300
250
200
150
100
1.5
1.3
1.1
0.9
0.7
0.5
0.3
0.1
95
90
85
80
75
70
65
60
55
50
45
40
50
0
–50
10
7
Switch Saturation Voltage
Minimum/Maximum Frequency vs
On Time
Maximum Switch Current vs
R
LIM
V
I
SW
– 25
IN
Step-Up
8
C
= 1.5V
= 500mA
SWITCH ON TIME ( s)
TEMPERATURE ( C)
0
9
STEP-UP MODE
V
R
IN
LIM
100
25
10
5V
( )
0 C
50
11
T
A
LT1110 • TPC05
LT1110 • TPC11
LT1110 • TPC08
75
70 C
12
1000
100
13
400
380
360
340
320
300
280
260
240
220
200
1.4
1.2
1.0
0.8
0.6
0.4
0.2
1.5
1.3
1.1
0.9
0.7
0.5
0.3
0.1
0
10
0
0
Saturation Voltage
Step-Up Mode
Quiescent Current
Maximum Switch Current vs
R
V
LIM
IN
0.2
3
= 1.0V
Step-Down
6
V = 1.2V
0.4
IN
V
INPUT VOLTAGE (V)
9
IN
0.6
= 1.5V
I
12 15 18 21 24 27 30
SWITCH
R
STEP-DOWN MODE
V
LIM
IN
100
0.8
= 12V
( )
V = 2.0V
(A)
IN
1.0
1.2
LT1110 • TPC06
V
LT1110 • TPC09
LT1110 • TPC12
V
IN
IN
1.4 1.6
= 3.0V
= 5.0V
1000