Datasheet

LTC3614
26
3614fa
TYPICAL APPLICATIONS
General Purpose Buck Regulator with Fast Compensation
and Improved Step Response, 2.25MHz
RUN
TRACK/SS
RT/SYNC
PGOOD
ITH
PGOOD SGND
PGND
V
IN
2.25V TO 5.5V
SRLIM/DDR
SV
IN
LTC3614
SW
PV
IN
C
F
1µF
R
F
24
L1
0.33µH
R1
392k
C3
22pF
R2
196k
3614 TA02a
MODE V
FB
C
O2
100µF
C
C1
10pF
10µF
s4
C
C
220pF
C
SS
10nF
V
OUT
1.8V
4A
R4
100k
R5B
1M
L1: VISHAY IHLP-2525CZ-01 330nH
R5A
1M
R
C
43k
R
SS
4.7M
Effi ciency vs Output Current
Load Step Response in
Forced Continuous Mode
OUTPUT CURRENT (mA)
30
EFFICIENCY (%)
90
100
20
10
80
50
70
60
40
1 100 1000 10000
3614 TA02b
0
10
V
IN
= 2.5V
V
IN
= 3.3V
V
IN
= 4V
V
IN
= 5.5V
V
OUT
= 1.8V
V
OUT
100mV/DIV
I
OUT
2A/DIV
50µs/DIV
3614 TA02c
V
IN
= 3.3V
V
OUT
= 1.8V
I
OUT
= 100mA TO 4A
V
MODE
= 1.5V