ltc1174hv Linear Technology Corporation, ltc1174hv Datasheet - Page 5

• Manufacturer Part Number: ltc1174hv
• Description: High Efficiency Step-down And Inverting Dc/dc Converter
• Manufacturer: Linear Technology Corporation

TYPICAL PERFOR A CE CHARACTERISTICS
–10
–12
–14
2.0
1.5
1.0
0.5
– 6
– 2
– 4
– 8
95
94
93
92
91
90
89
0
6
4
2
0
0
Efficiency vs Input Voltage
0
5
Operating Frequency
vs V
Line Regulation
I
I
V
LOAD
PGM
OUT
6
1
IN
2
I
LOAD
= 0V
= 5V
= 100mA
I
– V
PGM
7
2
(V
= 300mA
IN
4
OUT
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
= V
8
3
– V
IN
T
OUT
A
6
4
9
= 25°C
) VOLTAGE (V)
T
10
5
A
8
V
L = 100µH
COIL = CTX100-4
= 70°C
OUT
I
I
LOAD
PGM
11
6
10
= 5V
= 0V
W
= 100mA
12
7
12
13
1174 G10
8
1174 G07
1174 G13
U
14
14
9
180
160
140
120
100
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
80
60
40
20
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0
0
0
0
Switch Leakage Current
vs Temperature
Supply Current in Shutdown
4
Switch Resistance vs
Input Voltage
V
SHUTDOWN = 0V
T
CURRENT INTO PIN 6 ONLY
IN
A
= 25°C
6
2
= 13.5V
LTC1174
20
8
4
TEMPERATURE (°C)
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
LTC1174HV
10
40
6
12
8
60
14
10
16
T
80
A
LTC1174-3.3/LTC1174-5
= 25°C
12
1174 G08
1174 G11
18
1174 G14
100
14
20
500
450
400
350
300
250
200
150
100
95
94
93
92
91
90
89
88
87
50
50
40
30
20
10
0
0
5
Efficiency vs Input Voltage
0
Off-Time vs Output Voltage
DC Supply Current
0
LTC1174HV-3.3
V
I
I
CORE = CTX (Kool Mµ
T
PGM
LOAD
OUT
A
6
LTC1174-3.3
= 25°C
2
= 0V
ACTIVE MODE
= 5V
= 75mA
7
1
L = 50µH
INPUT VOLTAGE (V)
4
OUTPUT VOLTAGE (V)
INPUT VOLTAGE (V)
8
SLEEP MODE
LTC1174-5
LTC1174HV-5
2
6
9
LTC1174
L = 100µH
®
10 11
)
8
I
3
I
PGM
PGM
10
= V
= 0V
12
IN
4
12
13
1174 G09
1174 G12
1174fe
1174 G15
5
14
14
5