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