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| LTC3822-1_15 Datasheet, PDF (20/24 Pages) Linear Technology – No RSENSE, Low Input Voltage, Synchronous Step-Down DC/DC Controller | |||
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LTC3822-1
APPLICATIONS INFORMATION
VIN
GND
GND
CIN
M1
L1
M2 SW VOUT
COUT
U1
AND OTHER
SMALL-SIGNAL
COMPONENTS
GND SENSE
TRACE
38221 F09
Figure 9. LTC3822-1 Suggested PCB Floorplan
TRACK/SS
IPRG
VIN
SYNC/MODE
RUN
PLLLPF
TG
LTC3822EDD-1
SW
ITH
10.2k
27pF
1000pF
BOOST
GND
BG
VFB
59k
1% 118k 1%
27pF
0.22µF
FDS6898A
IHLP-2525CZ-01
0.47µH
D
OPTIONAL
22µF
Ã2
VIN
2.75V TO 4.5V
47µF*
Ã2
VOUT
1.8V
8A
38221 F10
*TDK C3216X5R0JL176M
Figure 10. 3.3VIN 1.8V/8A High Efï¬ciency 550kHz Step-Down Converter
38221f
20
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