LTM4613
TYPICAL PERFORMANCE CHARACTERISTICS (Refer to Figure 18)
100
95
90
85
80
75
Efficiency vs Load Current with
3.3V OUT (FCB = 0)
100
95
90
85
80
75
Efficiency vs Load Current with
5V OUT (FCB = 0)
100
95
90
85
80
75
Efficiency vs Load Current with
12V OUT (FCB = 0)
70
65
60
0
1
2
3
4
5
5V IN , 3.3V OUT
12V IN , 3.3V OUT
24V IN , 3.3V OUT
36V IN , 3.3V OUT
6 7
8
70
65
60
0
1
2
3
4
5
12V IN , 5V OUT
24V IN , 5V OUT
36V IN , 5V OUT
6 7
8
70
65
60
0
1
2
3
4
5
20V IN , 12V OUT
24V IN , 12V OUT
28V IN , 12V OUT
36V IN , 12V OUT
6 7
8
100
95
90
85
80
LOAD CURRENT (A)
4613 G01
Efficiency vs Load Current with
15V OUT (FCB = 0)
I OUT
5A/DIV
V OUT
100mV/DIV
AC
LOAD CURRENT (A)
4613 G02
Transient Response from 12V IN
to 3.3V OUT
I OUT
5A/DIV
V OUT
100mV/DIV
AC
LOAD CURRENT (A)
4613 G03
Transient Response from 12V IN
to 5V OUT
75
70
65
60
0
1
2
3
4
5
24V IN , 15V OUT
28V IN , 15V OUT
32V IN , 15V OUT
36V IN , 15V OUT
6 7
8
100μs/DIV
LOAD STEP: 0A TO 4A
C OUT = 1 × 47μF POSCAP
1 × 10μF CERAMIC CAPACITOR AND
3 × 47μF CERAMIC CAPACITORS
4613 G05
100μs/DIV
LOAD STEP: 0A TO 4A
C OUT = 1 × 47μF POSCAP
1 × 10μF CERAMIC CAPACITOR AND
3 × 47μF CERAMIC CAPACITORS
4613 G06
LOAD CURRENT (A)
4613 G04
I OUT
5A/DIV
V OUT
200mV/DIV
AC
Transient Response from 24V IN
to 12V OUT
I IN
200mA/DIV
V OUT
5V/DIV
Start-Up with 24V IN to 12V OUT
at I OUT = 0A
I IN
1A/DIV
V OUT
5V/DIV
Start-Up with 24V IN to 12V OUT at
I OUT = 8A
10ms/DIV
10ms/DIV
100μs/DIV
LOAD STEP: 0A TO 4A
C OUT = 1 × 47μF POSCAP
1 × 10μF CERAMIC CAPACITOR AND
3 × 47μF CERAMIC CAPACITORS
4613 G07
4613 G08
SOFT-START CAPACITOR: 0.1μF
C IN = 2 × 10μF CERAMIC CAPACITORS AND
1 × 100μF OS-CON CAPACITOR
4613 G09
SOFT-START CAPACITOR: 0.1μF
C IN = 2 × 10μF CERAMIC CAPACITORS AND
1 × 100μF OS-CON CAPACITOR
4613f
5
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