LTM4608
TYPICAL PERFORMANCE CHARACTERISTICS
Efficiency vs Load Current
Efficiency vs Load Current
Efficiency vs Load Current
100
CONTINUOUS MODE
100
CONTINUOUS MODE
100
CONTINUOUS MODE
95
90
85
95
90
85
95
90
85
80
75
70
0
2
5V IN 1.2V OUT
5V IN 1.5V OUT
5V IN 1.8V OUT
5V IN 2.5V OUT
5V IN 3.3V OUT
4
6
8
80
75
70
0
3.3V IN 1.2V OUT
3.3V IN 1.5V OUT
3.3V IN 1.8V OUT
3.3V IN 2.5V OUT
2 4
6
8
80
75
70
0
1
2
2.7V IN 1.0V OUT
2.7V IN 1.5V OUT
2.7V IN 1.8V OUT
3 4
5
6
7
100
90
80
70
60
LOAD CURRENT
Burst Mode Efficiency with
5V Input
4608 G01
4.0
3.5
3.0
2.5
2.0
1.5
LOAD CURRENT
V IN to V OUT Step-Down Ratio
4608 G02
4.0
3.5
3.0
2.5
2.0
1.5
LOAD CURRENT (A)
V IN to V OUT Step-Down Ratio
4608 G03
50
40
V OUT = 1.5V
V OUT = 2.5V
V OUT = 3.3V
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1
1.0
0.5
0
2
I OUT = 8A
V OUT = 1.2V
V OUT = 1.5V
3
4
V OUT = 1.8V
V OUT = 2.5V
V OUT = 3.3V
5
6
1.0
0.5
0
2
I OUT = 6A
V OUT = 1.2V
V OUT = 1.5V
3
4
V OUT = 1.8V
V OUT = 2.5V
V OUT = 3.3V
5
6
1.6
1.4
LOAD CURRENT (A)
Supply Current vs V IN
4608 G04
1A/DIV
V IN (V)
Load Transient Response
4608 G05
V IN (V)
Load Transient Response
4608 G06
1.2
1
0.8
0.6
V O = 1.2V PULSE-SKIPPING MODE
V O = 1.2V BURST MOD E
20mV/DIV
2A/DIV
20mV/DIV
0.4
0.2
0
2.5
3
3.5
4
4.5
5
5.5
V IN = 5V 20μs/DIV
V OUT = 3.3V
2A/μs STEP
C OUT = 100μF X5R
C1 = 100pF, C3 = 22pF FROM FIGURE 18
4608 G08
V IN = 5V 20μs/DIV
V OUT = 2.5V
2.5A/μs STEP
C OUT = 100μF X5R
C1 = 120pF, C3 = 47pF FROM FIGURE 18
4608 G09
INPUT VOLTAGE (V)
4608 G07
4608fd
5
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相关代理商/技术参数
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