LTC3547 LINER [Linear Technology], LTC3547 Datasheet - Page 5

• Manufacturer Part Number: LTC3547
• Description: Dual Monolithic 300mA Synchronous Step-Down Regulator
• Manufacturer: LINER [Linear Technology]

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