LTM4600
TYPICAL PERFORMANCE CHARACTERISTICS
Efficiency vs Load Current
with 5V
IN
(FCB = 0)
100
90
80
EFFICIENCY (%)
EFFICIENCY (%)
70
60
50
40
30
0
2
6
4
LOAD CURRENT (A)
100
90
80
70
60
50
40
30
0.6V
OUT
1.2V
OUT
1.5V
OUT
2.5V
OUT
3.3V
OUT
0
2
6
LOAD CURRENT (A)
4
8
10
4600 G02
(See Figure 18 for all curves)
Efficiency vs Load Current
with 18V
IN
(FCB = 0)
100
90
80
70
60
50
40
30
0
2
6
LOAD CURRENT (A)
4
8
10
4600 G03
Efficiency vs Load Current
with 12V
IN
(FCB = 0)
EFFICIENCY (%)
0.6V
OUT
1.2V
OUT
1.5V
OUT
2.5V
OUT
8
10
4600 G01
1.5V
OUT
1.8V
OUT
2.5V
OUT
3.3V
OUT
Efficiency vs Load Current
with Different FCB Settings
90
80
70
EFFICIENCY (%)
60
FCB = GND
50
40
30
20
0.1
V
IN
= 12V
V
OUT
= 1.5V
1
LOAD CURRENT (A)
10
4600 G04
1.2V Transient Response
1.5V Transient Response
FCB > 0.7V
V
OUT
= 50mV/DIV
I
OUT
= 5A/DIV
25μs/DIV
1.2V AT 5A/μs LOAD STEP
C
OUT
= 3 • 22μF 6.3V CERAMICS
470μF 4V SANYO POSCAP
C3 = 100pF
4600 G05
25μs/DIV
1.5V AT 5A/μs LOAD STEP
C
OUT
= 3 • 22μF 6.3V CERAMICS
470μF 4V SANYO POSCAP
C3 = 100pF
4600 G06
1.8V Transient Response
2.5V Transient Response
3.3V Transient Response
25μs/DIV
1.8V AT 5A/μs LOAD STEP
C
OUT
= 3 • 22μF 6.3V CERAMICS
470μF 4V SANYO POSCAP
C3 = 100pF
4600 G07
25μs/DIV
2.5V AT 5A/μs LOAD STEP
C
OUT
= 3 • 22μF 6.3V CERAMICS
470μF 4V SANYO POSCAP
C3 = 100pF
4600 G08
25μs/DIV
3.3V AT 5A/μs LOAD STEP
C
OUT
= 3 • 22μF 6.3V CERAMICS
470μF 4V SANYO POSCAP
C3 = 100pF
4600 G09
4600fc
4
LINER [ LINEAR TECHNOLOGY ]
