ltc1174hv Linear Technology Corporation, ltc1174hv Datasheet - Page 4

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

ELECTRICAL CHARACTERISTICS
Note 3: Guaranteed by design.
Note 4: Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency.
LTC1174
LTC1174-3.3/LTC1174-5
TYPICAL PERFOR A CE CHARACTERISTICS
4
100
100
95
90
85
80
75
70
90
80
70
60
50
1
1
Efficiency vs Load Current
Efficiency vs Load Current
V
IN
LOAD CURRENT (mA)
LOAD CURRENT (mA)
= 5V
V
IN
10
= 6V
10
V
V
IN
IN
= 9V
= 9V
L = 50µH
V
I
COIL = CTX50-4
L = 50µH
V
I
COIL = CTX50-4
PGM
PGM
OUT
OUT
= 0V
= 3.3V
= 0V
= 5V
W
100
100
1174 G01
1174 G04
U
200
300
100
100
95
90
85
80
75
70
90
80
70
60
50
1
1
Efficiency vs Load Current
Efficiency vs Load Current
LOAD CURRENT (mA)
V
LOAD CURRENT (mA)
V
IN
IN
10
= 5V
10
= 6V
V
V
IN
IN
= 9V
= 9V
Note 5: Current into Pin 6 only, measured without electrolytic input
capacitor.
Note 6: The off-time is wafer-sort trimmed.
L = 50µH
V
I
COIL = CTX50-4
L = 50µH
V
I
COIL = CTX50-4
PGM
PGM
OUT
OUT
100
= V
= V
= 5V
100
= 3.3V
IN
IN
1174 G02
1174 G05
400
500
100
100
95
90
85
80
75
70
90
80
70
60
50
1
1
Efficiency vs Load Current
Efficiency vs Load Current
LOAD CURRENT (mA)
LOAD CURRENT (mA)
V
IN
V
10
10
IN
= 6V
V
= 5V
V
IN
IN
= 9V
= 9V
L = 100µH
V
I
COIL = CTX100-4
L = 100µH
V
I
COIL = CTX100-4
PGM
PGM
OUT
OUT
100
100
= V
= 3.3V
= V
= 5V
IN
IN
1174 G03
1174 G06
1174fe
500
500