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LTC3546
7
3546fc
For more information www.linear.com/3546
Typical perForMance characTerisTics
OUT2 Efficiency vs V
IN
OUT2 Efficiency vs V
IN
OUT1 Load Step
OUT1 Load Step
OUT2 Load Step
OUT2 Load Step
V
IN
(V)
EFFICIENCY (%)
100
82
98
94
90
86
96
92
88
84
80
4.25 4.753.75
5.253.252.75
2.25
3546 G20
600mA
3A
SW1D CONNECTED TO SW2
V
OUT
= 2.5V
3546 G21
400mA
2A
SW1D CONNECTED TO SW1
V
OUT
= 2.5V
V
IN
(V)
EFFICIENCY (%)
100
82
98
94
90
86
96
92
88
84
80
4.25 4.753.75 5.253.252.75
2.25
100µs/DIV
V
OUT
100mV/DIV
I
LOAD
1A/DIV
3546 G22
SW1D CONNECTED TO SW1
V
IN
= 3.6V
V
OUT
= 1.2V
I
LOAD
= 200mA TO 1.9A
100µs/DIV
V
OUT
100mV/DIV
I
LOAD
SW1D CONNECTED TO SW2
V
IN
= 3.6V
V
OUT
= 1.2V
I
= 100mA TO 0.9A
100µs/DIV
V
OUT
100mV/DIV
I
LOAD
1A/DIV
3546 G24
SW1D CONNECTED TO SW2
V
IN
= 3.6V
V
OUT
= 1.8V
I
LOAD
= 300mA TO 2.9A
100µs/DIV
V
OUT
100mV/DIV
I
LOAD
1A/DIV
3546 G25
SW1D CONNECTED TO SW1
V
IN
= 3.6V
V
OUT
= 1.8V
I
LOAD
= 200mA TO 1.9A
OUT1 Efficiency vs Frequency
OUT1 Efficiency vs Frequency
3.5
4.0
3.02.52.01.51.00.5
FREQUENCY (MHz)
EFFICIENCY (%)
95
94
93
92
91
90
86
87
88
89
85
3546 G26
SW1D CONNECTED TO SW1
V
IN
= 3.6V
V
OUT
= 1.8V
I
LOAD
= 400mA
FREQUENCY (MHz)
EFFICIENCY (%)
3546 G27
SW1D CONNECTED TO SW2
V
IN
= 3.6V
V
OUT
= 1.8V
I
LOAD
= 200mA
3.5
4.0
3.02.52.01.51.00.5
95
94
93
92
91
90
86
87
88
89
85
OUT2 Efficiency vs Frequency
3.5
4.0
3.02.52.01.51.00.5
FREQUENCY (MHz)
EFFICIENCY (%)
3546 G28
SW1D CONNECTED TO SW2
V
IN
= 3.6V
V
OUT
= 2.5V
I
LOAD
= 600mA
95
94
93
92
91
90
86
87
88
89
85