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