1174 データシートの表示（PDF） - Linear Technology
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1174 Datasheet PDF : 20 Pages
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LTC1174
LTC1174-3.3/LTC1174-5
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.
Note 5: Current into Pin 6 only, measured without electrolytic input
capacitor.
Note 6: The off-time is wafer-sort trimmed.
TYPICAL PERFOR A CE CHARACTERISTICS
Efficiency vs Load Current
100
95
VIN = 6V
90
VIN = 9V
85
80
75
70
1
L = 50µH
VOUT = 5V
IPGM = 0V
COIL = CTX50-4
10
LOAD CURRENT (mA)
100 200
1174 G01
Efficiency vs Load Current
100
90
VIN = 5V
VIN = 9V
80
70
L = 50µH
60
VOUT = 3.3V
IPGM = 0V
COIL = CTX50-4
50
1
10
100 300
LOAD CURRENT (mA)
1174 G04
Efficiency vs Load Current
100
95
VIN = 6V
90
VIN = 9V
85
80
L = 50µH
75
VOUT = 5V
IPGM = VIN
COIL = CTX50-4
70
1
10
100
400
LOAD CURRENT (mA)
1174 G02
Efficiency vs Load Current
100
90
VIN = 5V
80
VIN = 9V
70
L = 50µH
60
VOUT = 3.3V
IPGM = VIN
COIL = CTX50-4
50
1
10
100
500
LOAD CURRENT (mA)
1174 G05
Efficiency vs Load Current
100
95
VIN = 6V
90
VIN = 9V
85
80
L = 100µH
75
VOUT = 5V
IPGM = VIN
COIL = CTX100-4
70
1
10
100
500
LOAD CURRENT (mA)
1174 G03
Efficiency vs Load Current
100
90
VIN = 5V
80
VIN = 9V
70
L = 100µH
60
VOUT = 3.3V
IPGM = VIN
COIL = CTX100-4
50
1
10
100
500
LOAD CURRENT (mA)
1174 G06
1174fe
4
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