LTC3521 Datasheet, PDF (17/20 Pages) Linear Technology – Wide VIN, 1A Buck-Boost DC/DC and Dual 600mA Buck DC/DC Converters

applications information
MINIMIZE
TRACE
LENGTH
MINIMIZE
TRACE
LENGTH
LTC3521
KELVIN TO
V_OUT PAD
BUCK
V_OUT
VIA TO
GROUND PLANE
SHDN2
(1)
PGOOD3
(2)
PGOOD2
(3)
PGOOD1
(4)
VIN
(5)
GND
(6)
DIRECT TIE
BACK TO
GND PIN
MINIMIZE
TRACE
LENGTH
PGND2
(18)
SW3
(17)
VOUT1
(16)
SW1A
(15)
SW1B
(14)
NC
(13)
UNINTERRUPTED GROUND PLANE MUST EXIST UNDER ALL COMPONENTS
SHOWN IN BOLD, AND UNDER TRACES CONNECTING TO THOSE COMPONENTS
Figure 5. LTC3521 Recommended PCB Layout
KELVIN TO
V_OUT PAD
BUCK
V_OUT
BUCK-BOOST
V_OUT
KELVIN TO
V_OUT PAD
3521 F05
3521f
17