LTC1174-3.3 Linear Technology, LTC1174-3.3 Datasheet - Page 4

• Manufacturer Part Number: LTC1174-3.3
• Description: High Efficiency Step-Down and Inverting DC/DC Converter
• Manufacturer: Linear Technology

LTC1174
LTC1174-3.3/LTC1174-5
TYPICAL PERFOR
Kool M
4
–10
–12
–14
100
100
–2
–4
– 6
–8
95
90
85
80
75
70
90
80
70
60
50
6
4
2
0
1
Line Regulation
0
1
Efficiency vs Load Current
Efficiency vs Load Current
®
I
I
LOAD
PGM
is a registered trademark of Magnetics, Inc.
2
= 0V
= 100mA
V
IN
LOAD CURRENT (mA)
LOAD CURRENT (mA)
4
INPUT VOLTAGE (V)
= 5V
V
IN
10
= 6V
10
6
V
V
IN
IN
= 9V
8
= 9V
L = 50 H
V
I
COIL = CTX50-4
L = 50 H
V
I
COIL = CTX50-4
PGM
PGM
OUT
OUT
10
= 0V
= 3.3V
= 0V
= 5V
W
100
12
100
A
1174 G01
1174 G04
1174 G07
U
200
300
14
CE
C
HARA TERISTICS
100
100
180
160
140
120
100
95
90
85
80
75
70
90
80
70
60
50
80
60
40
20
0
1
1
0
Efficiency vs Load Current
Efficiency vs Load Current
Switch Leakage Current
vs Temperature
V
IN
= 13.5V
20
C
LOAD CURRENT (mA)
V
LOAD CURRENT (mA)
V
TEMPERATURE (°C)
IN
IN
10
= 5V
10
= 6V
40
V
V
IN
IN
= 9V
= 9V
60
L = 50 H
V
I
COIL = CTX50-4
L = 50 H
V
I
COIL = CTX50-4
PGM
PGM
OUT
OUT
100
= 5V
= V
100
= 3.3V
= V
80
IN
IN
1174 G08
1174 G02
1174 G05
400
500
100
100
100
95
90
85
80
75
70
90
80
70
60
50
95
94
93
92
91
90
89
88
87
1
1
Efficiency vs Load Current
Efficiency vs Load Current
Efficiency vs Input Voltage
5
V
I
I
CORE = CTX (Kool M
PGM
LOAD
OUT
6
= 0V
= 5V
= 75mA
7
LOAD CURRENT (mA)
LOAD CURRENT (mA)
L = 50 H
INPUT VOLTAGE (V)
V
8
IN
V
10
10
IN
= 6V
V
= 5V
V
9
IN
IN
= 9V
= 9V
L = 100 H
®
10 11
)
L = 100 H
V
I
COIL = CTX100-4
L = 100 H
V
I
COIL = CTX100-4
PGM
PGM
OUT
OUT
100
100
= V
= 3.3V
= V
= 5V
12
IN
IN
1174 G03
1174 G06
13
1174 G09
500
500
14