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LTM4627
TYPICAL PERFORMANCE CHARACTERISTICS
100
Efficiency vs Load Current
with 5V IN
100
Efficiency vs Load Current
with 8V IN
100
Efficiency vs Load Current
with 12V IN
95
90
85
80
75
95
90
85
80
75
95
90
85
80
75
70
65
60
55
50
0
2
4
1V OUT AT 400kHz
1.2V OUT AT 400kHz
1.5V OUT AT 400kHz
2.5V OUT AT 400kHz
3.3V OUT AT 650kHz
6 8 10 12 14
LOAD CURRENT (A)
16
70
65
60
55
50
0
2
4
1V OUT AT 400kHz
1.2V OUT AT 400kHz
1.5V OUT AT 400kHz
2.5V OUT AT 500kHz
3.3V OUT AT 600kHz
5V OUT AT 600kHz
6 8 10 12 14
LOAD CURRENT (A)
16
70
65
60
55
50
0
2
4
1V OUT AT 400kHz
1.2V OUT AT 400kHz
1.5V OUT AT 400kHz
2.5V OUT AT 650kHz
3.3V OUT AT 650kHz
5V OUT AT 700kHz
6 8 10 12 14 16
LOAD CURRENT (A)
Burst Mode Efficiency
4627 G01
4627 G02
Pulse-Skipping Mode Efficiency
1.0V Transient Response
4627 G03
100
90
80
70
5V IN , 2.5V OUT Burst Mode OPERATION
12V IN , 2.5V OUT Burst Mode OPERATION
100
90
80
70
5V IN , 2.5V OUT
PULSE-SKIPPING MODE
50mV/DIV
100μs/DIV
60
50
40
0.1
0.2
0.5 1
LOAD CURRENT (A)
1.5
2
60
50
40
0.1
0.2
12V IN , 2.5V OUT
PULSE-SKIPPING MODE
0.5 1 1.5
LOAD CURRENT (A)
2
0A TO 7.5A
LOAD STEP
4627 G06
V IN = 12V, V OUT = 1.0V,
C FF = 82pF, C COMP = 33pF
OUTPUT CAPACITOR = 5 × 100 μ F CERAMIC X5R
4627 G04
4627 G05
50mV/DIV
0A TO 7.5A
LOAD STEP
1.2V Transient Response
50mV/DIV
0A TO 7.5A
LOAD STEP
1.5V Transient Response
50mV/DIV
0A TO 7.5A
LOAD STEP
1.8V Transient Response
100μs/DIV
4627 G07
100μs/DIV
4627 G08
100μs/DIV
4627 G09
V IN = 12V, V OUT = 1.2V,
C FF = 82pF, C COMP = 33pF
OUTPUT CAPACITOR = 5 × 100 μ F CERAMIC X5R
V IN = 12V, V OUT = 1.5V,
C FF = 82pF, C COMP = 33pF
OUTPUT CAPACITOR = 5 × 100 μ F CERAMIC X5R
For more information www.linear.com/LTM4627
V IN = 12V, V OUT = 1.8V,
C FF = 82pF, C COMP = 33pF
OUTPUT CAPACITOR = 4 × 100 μ F CERAMIC X5R
4627fc
5
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