LTM4616
TYPICAL PERFORMANCE CHARACTERISTICS
Efficiency vs Load Current
100
95
EFFICIENCY (%)
EFFICIENCY (%)
90
85
80
75
70
CONTINUOUS MODE
100
95
EFFICIENCY (%)
90
85
80
75
70
3.3V
IN
1.2V
OUT
3.3V
IN
1.5V
OUT
3.3V
IN
1.8V
OUT
3.3V
IN
2.5V
OUT
0
2
4
LOAD CURRENT
6
8
4616 G02
Specified as Each Channel
Efficiency vs Load Current
100
95
90
85
80
75
70
2.7V
IN
1.0V
OUT
2.7V
IN
1.5V
OUT
2.7V
IN
1.8V
OUT
0
1
4
3
2
5
LOAD CURRENT (A)
6
7
4616 G03
Efficiency vs Load Current
CONTINUOUS MODE
CONTINUOUS MODE
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
0
2
4
LOAD CURRENT
6
8
4616 G01
Burst Mode Efficiency with
5V Input
100
90
EFFICIENCY (%)
80
V
OUT
(V)
70
60
50
40
V
OUT
= 1.5V
V
OUT
= 2.5V
V
OUT
= 3.3V
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1
LOAD CURRENT (A)
4616 G04
V
IN
to V
OUT
Step-Down Ratio
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
2
I
OUT
= 8A
V
OUT
= 1.2V
V
OUT
= 1.5V
3
4
V
IN
(V)
V
OUT
= 1.8V
V
OUT
= 2.5V
V
OUT
= 3.3V
5
6
4616 G05
V
IN
to V
OUT
Step-Down Ratio
4.0
3.5
3.0
2.5
V
OUT
(V)
2.0
1.5
1.0
0.5
0
2
I
OUT
= 6A
V
OUT
= 1.2V
V
OUT
= 1.5V
3
4
V
IN
(V)
V
OUT
= 1.8V
V
OUT
= 2.5V
V
OUT
= 3.3V
5
6
4616 G06
1.6
1.4
SUPPLY CURRENT (mA)
1.2
1
0.8
0.6
0.4
0.2
0
Supply Current vs V
IN
Load Transient Response
I
LOAD
1A/DIV
Load Transient Response
I
LOAD
1A/DIV
0A
V
OUT
50mV/DIV
V
O
= 1.2V PULSE-SKIPPING MODE
0A
V
OUT
50mV/DIV
V
O
= 1.2V Burst Mode OPERATION
4616 G08
V
IN
= 5V
20µs/DIV
V
OUT
= 3.3V
2A/µs STEP
C
OUT
= 2
×
100µF X5R, 470µF 4V POSCAP
4616 G09
V
IN
= 5V
20µs/DIV
V
OUT
= 2.5V
2A/µs STEP
C
OUT
= 2
×
100µF X5R, 470µF 4V POSCAP
2.5
3
3.5
4
4.5
INPUT VOLTAGE (V)
5
5.5
4616 G07
4616fe
For more information
5
LINEAR_DIMENSIONS [ LINEAR DIMENSIONS SEMICONDUCTOR ]
