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| LTC3614_15 Datasheet, PDF (26/30 Pages) Linear Technology – 4A, 4MHz Monolithic Synchronous Step-Down DC/DC Converter | |||
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LTC3614
Typical Applications
General Purpose Buck Regulator with Fast Compensation
and Improved Step Response, 2.25MHz
VIN
2.25V TO 5.5V
10µF
Ã4
RSS
4.7M
CSS
10nF
RC
43k
CC
220pF
R4
100k
PGOOD
CC1 R5A
10pF 1M
R5B
1M
L1: VISHAY IHLP-2525CZ-01 330nH
RF
24Ω
CF
1µF
SVIN
RUN
TRACK/SS
PVIN
SRLIM/DDR
RT/SYNC
LTC3614
SW
PGOOD
SGND
ITH
PGND
MODE
VFB
R2
196k
L1
0.33µH
R1
392k
C3
22pF
VOUT
1.8V
CO2 4A
100µF
3614 TA02a
Efficiency vs Output Current
100
VOUT = 1.8V
90
80
70
60
50
40
30
20
VIN = 2.5V
VIN = 3.3V
10
VIN = 4V
0
VIN = 5.5V
1
10
100
1000 10000
OUTPUT CURRENT (mA)
3614 TA02b
Load Step Response in
Forced Continuous Mode
VOUT
100mV/DIV
IOUT
2A/DIV
VIN = 3.3V
VOUT = 1.8V
IOUT = 100mA TO 4A
VMODE = 1.5V
50µs/DIV
3614 TA02c
3614fc
26
For more information www.linear.com/LTC3614
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