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| LTC3388-1_15 Datasheet, PDF (7/20 Pages) Linear Technology – 20V High Efficiency Nanopower Step-Down Regulator | |||
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LTC3388-1/LTC3388-3
TYPICAL PERFORMANCE CHARACTERISTICS
Efficiency vs ILOAD, L = 22μH
(LTC3388-1)
100
VIN = 3.0V
90
80
70
60
50
40
30
20
10
0
1μ
VOUT = 2.5V
VOUT = 1.8V
VOUT = 1.5V
VOUT = 1.2V
10μ 100μ 1m
LOAD CURRENT (A)
10m
338813 G22
Efficiency vs VIN for ILOAD = 50mA,
L = 22μH (LTC3388-1)
100
VOUT = 2.5V
VOUT = 1.8V
95
VOUT = 1.5V
VOUT = 1.2V
90
85
80
75
70
2 4 6 8 10 12 14 16 18 20
VIN (V)
338813 G24
Efficiency vs VIN for VOUT = 1.8V,
L = 22μH (LTC3388-1)
100
90
80
70
60
50
ILOAD = 50mA
ILOAD = 100μA
40
ILOAD = 50μA
ILOAD = 30μA
ILOAD = 10μA
30
2 4 6 8 10 12 14 16 18 20
VIN (V)
338813 G26
Efficiency vs ILOAD, L = 100μH
(LTC3388-1)
100
VIN = 3.0V
90
80
70
60
50
40
30
20
10
0
1μ
VOUT = 2.5V
VOUT = 1.8V
VOUT = 1.5V
VOUT = 1.2V
10μ 100μ 1m
LOAD CURRENT (A)
10m
338813 G23
Efficiency vs VIN for ILOAD = 50mA,
L = 100μH (LTC3388-1)
100
VOUT = 2.5V
VOUT = 1.8V
95
VOUT = 1.5V
VOUT = 1.2V
90
85
80
75
70
2 4 6 8 10 12 14 16 18 20
VIN (V)
338813 G25
Efficiency vs VIN for VOUT = 1.8V,
L = 100μH (LTC3388-1)
100
90
80
70
60
50
ILOAD = 50mA
ILOAD = 100μA
40
ILOAD = 50μA
ILOAD = 30μA
ILOAD = 10μA
30
2 4 6 8 10 12 14 16 18 20
VIN (V)
338813 G27
338813f
7
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