Datasheet

LTM4603/LTM4603-1
5
4603fb
typical perForMance characteristics
Efficiency vs Load Current
with 5V
IN
Efficiency vs Load Current
with 12V
IN
Efficiency vs Load Current
with 20V
IN
1.2V Transient Response 1.5V Transient Response
2.5V Transient Response
3.3V Transient Response
(See Figure 18 for all curves)
1.8V Transient Response
LOAD CURRENT (A)
0
50
EFFICIENCY (%)
55
65
70
75
100
85
2
4
5
4603 G01
60
90
95
80
1
3
6
7
5V
IN
, 0.6V
OUT
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
LOAD CURRENT (A)
0
EFFICIENCY (%)
60
90
95
100
2
4
5
4603 G02
50
45
80
70
55
85
40
75
65
1
3
6
7
12V
IN
, 1.2V
OUT
12V
IN
, 1.5V
OUT
12V
IN
, 1.8V
OUT
12V
IN
, 2.5V
OUT
12V
IN
, 3.3V
OUT
12V
IN
, 5V
OUT
LOAD CURRENT (A)
0
EFFICIENCY (%)
55
85
90
95
2
4
5
4603 G03
45
75
65
50
80
40
70
60
1
3
6
7
20V
IN
, 1.5V
OUT
20V
IN
, 1.8V
OUT
20V
IN
, 2.5V
OUT
20V
IN
, 3.3V
OUT
20V
IN
, 5V
OUT
LOAD STEP
1A/DIV
V
OUT
50mV/DIV
25µs/DIV
4603 G04
1.2V AT 3A/µs LOAD STEP
C
OUT
: 1× 22µF, 6.3V CERAMIC
1× 330µF, 4V SANYO POSCAP
LOAD STEP
1A/DIV
V
OUT
50mV/DIV
25µs/DIV
4603 G05
1.5V AT 3A/µs LOAD STEP
C
OUT
: 1× 22µF, 6.3V CERAMIC
1× 330µF, 4V SANYO POSCAP
LOAD STEP
1A/DIV
V
OUT
50mV/DIV
25µs/DIV
4603 G06
1.8V AT 3A/µs LOAD STEP
C
OUT
: 1× 22µF, 6.3V CERAMIC
1× 330µF, 4V SANYO POSCAP
LOAD STEP
1A/DIV
V
OUT
50mV/DIV
25µs/DIV
4603 G07
2.5V AT 3A/µs LOAD STEP
C
OUT
: 1× 22µF, 6.3V CERAMIC
1× 330µF, 4V SANYO POSCAP
LOAD STEP
1A/DIV
V
OUT
50mV/DIV
25µs/DIV
4603 G08
3.3V AT 3A/µs LOAD STEP
C
OUT
: 1× 22µF, 6.3V CERAMIC
1× 330µF, 4V SANYO POSCAP