LTC1174HVCN8 Linear Technology, LTC1174HVCN8 Datasheet - Page 4

• Manufacturer Part Number: LTC1174HVCN8
• Description: IC DC/DC CONV STP-DWN&INVRT 8DIP
• Manufacturer: Linear Technology
• Type: Step-Down (Buck), Invertingr

Specifications of LTC1174HVCN8

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1.25 ~ 18 V
• Current - Output: 1A
• Frequency - Switching: 200kHz
• Voltage - Input: 4 ~ 18.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Through Hole
• Package / Case: 8-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

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