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LTC3633 Datasheet(PDF) 22 Page - Linear Technology

Part # LTC3633
Description  Dual Channel 3A, 20V Monolithic Synchronous Step-Down Regulator
PDF  28 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3633 Datasheet(HTML) 22 Page - Linear Technology

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LTC3633A-2/LTC3633A-3
22
3633a23f
APPLICATIONS INFORMATION
RUN1
RUN2
RT
TRACKSS2
PGOOD2
LTC3633A-2
BOOST2
3633a23 F09
0.1μF
L2
1μH
R4
54.9k
R3
12.1k
SW2
VON2
PVIN2 PVIN1 SVIN
VFB2
PHMODE
TRACKSS1
PGOOD1
BOOST1
SW1
VON1
VFB1
COUT2
22μF
VOUT2
3.3V AT 3A
0.1μF
L1
0.68μH
R2
24.3k
R1
12.1k
COUT1
47μF
VOUT1
1.8V AT 3A
VIN
12V
CIN
47μF
×2
R5
162k
MODE/SYNC
ITH1
ITH2
INTVCC
C2
2.2μF
PGND
SGND
Figure 9. Design Example Circuit
Figure 10. Example of Power Component Layout for QFN Package
Figure 11. Example of Power Component
Layout for TSSOP Package
SW2
CBOOST2
CBOOST1
CVCC
SW1
VIAS TO GROUND
PLANE
VIA TO GROUND
PLANE
VIAS TO GROUND
PLANE
VIAS TO GROUND
PLANE
VIA TO BOOST1
VIA TO BOOST2
VIA TO VON2/R4 (NOT SHOWN)
VIA TO VON1/R2 (NOT SHOWN)
VOUT2
GND
VIN
GND
VOUT1
SGND
(TO NONPOWER
COMPONENTS)
3633a23 F10
COUT2
CIN
CIN
COUT1
L2
L1
SW1
SW2
VIAS TO GROUND
PLANE
VIAS TO GROUND
PLANE
VIAS TO GROUND
PLANE
VIAS TO GROUND
PLANE
VIA TO BOOST2
VIA TO BOOST1
VIA TO VON2 AND R4 (NOT SHOWN)
VIA TO VON1 AND R2 (NOT SHOWN)
VOUT2
VOUT1
SGND
(TO NONPOWER
COMPONENTS)
3633a23 F11
L1
L2
COUT2
COUT1
CIN
CIN
GND
GND
VIN
CBOOST1
CBOOST2
CVCC



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