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| LTC3616 Datasheet, PDF (25/28 Pages) Linear Technology – 6A, 4MHz Monolithic Synchronous Step-Down DC/DC Converter | |||
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TYPICAL APPLICATIONS
General Purpose Buck Regulator Using Ceramic Capacitors, 2.25MHz
LTC3616
VIN
2.25V TO 5.5V
22μF
s4
RSS
4.7M
CSS
10nF
RC
15k
CC
470pF
R4
100k
PGOOD
CC1 R5A
10pF 1M
R5B
1M
L1: VISHAY IHLP-2525CZ-01 220nH
RF
24Ω
CF
1μF
SVIN
RUN
TRACK/SS
PVIN
SRLIM/DDR
RT/SYNC
LTC3616
SW
PGOOD
SGND
ITH
PGND
MODE
VFB
R2
196k
L1
0.22μH
R1
392k
C3
22pF
CO1
47μF
3616 TA02a
VOUT
1.8V
CO2 6A
100μF
Efficiency vs Output Current
100
VOUT = 1.8V, VIN = 3.3V
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)
3616 TA02b
Load Step Forced Continuous Mode
VOUT
200mV/DIV
IOUT
5A/DIV
VIN = 3.3V
VOUT = 1.8V
IOUT = 100mA TO 3A
VMODE = 1.5V
50μs/DIV
3616 TA02c
3616f
25
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