Datasheet

LTM4616
5
4616ff
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V
IN
(V)
2
V
OUT
(V)
1.5
2.0
2.5
3 5
4616 G06
1.0
0.5
0
4
3.0
3.5
4.0
6
I
OUT
= 6A
V
OUT
= 1.2V
V
OUT
= 1.5V
V
OUT
= 1.8V
V
OUT
= 2.5V
V
OUT
= 3.3V
V
IN
(V)
2
V
OUT
(V)
1.5
2.0
2.5
3
5
4616 G05
1.0
0.5
0
4
3.0
3.5
4.0
6
I
OUT
= 8A
V
OUT
= 1.2V
V
OUT
= 1.5V
V
OUT
= 1.8V
V
OUT
= 2.5V
V
OUT
= 3.3V
typical perForMance characteristics
Efficiency vs Load Current
Burst Mode Efficiency with
5V Input
V
IN
to V
OUT
Step-Down Ratio
Supply Current vs V
IN
Load Transient Response Load Transient Response
Efficiency vs Load Current Efficiency vs Load Current
LOAD CURRENT
0
70
EFFICIENCY (%)
75
80
85
90
95
100
2 4 6 8
4616 G01
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
CONTINUOUS MODE
LOAD CURRENT
0
70
EFFICIENCY (%)
75
80
85
90
95
100
2 4 6 8
4616 G02
3.3V
IN
1.2V
OUT
3.3V
IN
1.5V
OUT
3.3V
IN
1.8V
OUT
3.3V
IN
2.5V
OUT
CONTINUOUS MODE
LOAD CURRENT (A)
0
EFFICIENCY (%)
90
95
100
2
4
5
4616 G03
80
70
85
75
1
3
6
7
2.7V
IN
1.0V
OUT
2.7V
IN
1.5V
OUT
2.7V
IN
1.8V
OUT
CONTINUOUS MODE
V
IN
to V
OUT
Step-Down Ratio
LOAD CURRENT (A)
40
EFFICIENCY (%)
60
80
100
50
70
90
0.2 0.4 0.6 0.8
4616 G04
1.11.00.10 0.3 0.5 0.7 0.9
V
OUT
= 1.5V
V
OUT
= 2.5V
V
OUT
= 3.3V
INPUT VOLTAGE (V)
2.5
SUPPLY CURRENT (mA)
4.5
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0
4616 G07
3.53
5
4
5.5
V
O
= 1.2V PULSE-SKIPPING MODE
V
O
= 1.2V Burst Mode OPERATION
0A
I
LOAD
1A/DIV
V
OUT
50mV/DIV
20µs/DIVV
IN
= 5V
V
OUT
= 3.3V
2A/µs STEP
C
OUT
= 2 × 100µF X5R, 470µF 4V POSCAP
4616 G08
Specified as Each Channel
I
LOAD
1A/DIV
V
OUT
50mV/DIV
20µs/DIVV
IN
= 5V
V
OUT
= 2.5V
2A/µs STEP
C
OUT
= 2 × 100µF X5R, 470µF 4V POSCAP
4616 G09
0A