Datasheet

LTC3547
5
3547fa
250µs/DIV
I
L
100mA/DIV
RUN
2V/DIV
V
OUT
1V/DIV
3547 G15
V
IN
= 3.6V
V
OUT
= 1.8V
I
LOAD
= 0A
Load Regulation Line Regulation
Start-Up From Shutdown Start-Up From Shutdown
Load Step
Load Step Load Step
TYPICAL PERFOR A CE CHARACTERISTICS
UW
200µs/DIV
I
L
200mA/DIV
RUN
2V/DIV
V
OUT
1V/DIV
3547 G16
V
IN
= 3.6V
V
OUT
= 1.8V
I
LOAD
= 300mA
10µs/DIV
I
L
200mA/DIV
I
LOAD
200mA/DIV
V
OUT
, AC
COUPLED
100mV/DIV
3547 G19
V
IN
= 3.6V
V
OUT
= 1.8V
I
LOAD
= 50mA TO 300mA
10µs/DIV
I
L
200mA/DIV
I
LOAD
200mA/DIV
V
OUT
, AC
COUPLED
100mV/DIV
3547 G18
V
IN
= 3.6V
V
OUT
= 1.8V
I
LOAD
= 20mA TO 300mA
10µs/DIV
I
L
200mA/DIV
I
LOAD
200mA/DIV
V
OUT
, AC
COUPLED
100mV/DIV
3547 G17
V
IN
= 3.6V
V
OUT
= 1.8V
I
LOAD
= 0mA TO 300mA
LOAD CURRENT (mA)
0
V
OUT
ERROR (%)
150
3547 G13
0.8
0.6
0.2
50 100 200
0
–0.2
1.2
1.O
0.4
250 300 350
Burst Mode
OPERATION
V
OUT
= 1.2V
V
OUT
= 1.8V
V
OUT
= 2.5V
V
IN
= 3.6V
V
IN
(V)
2.5
V
OUT
ERROR (%)
4
3547 G14
0.4
0.2
–0.2
3 3.5 4.5
–0.4
–0.6
0.6
0
5 5.5
V
OUT
= 1.8V
I
LOAD
= 100mA