LTC3522_15 Datasheet, PDF (17/20 Pages) Linear Technology – Synchronous 400mA Buck-Boost and 200mA Buck Converters

APPLICATIONS INFORMATION
MINIMIZE
TRACE
LENGTH
DIRECT TIE
BACK TO
GND PIN
FB2
(1)
PWM
(2)
GND
(3)
PGOOD2
(4)
MINIMIZE
TRACE
LENGTH
VOUT1
(12)
SW1A
(11)
SW1B
(10)
PGND2
(9)
LTC3522
KELVIN TO
V_OUT PAD
BUCK
V_OUT
UNINTERRUPTED GROUND PLANE MUST
EXIST UNDER ALL COMPONENTS
SHOWN IN BOLD AND UNDER TRACES
CONNECTING TO THOSE COMPONENTS
VIA TO
GROUND PLANE
BUCK-BOOST
V_OUT
KELVIN TO
V_OUT PAD
VIA TO
GROUND
PLANE
3522 F05
Figure 5. LTC3522 Recommended PCB Layout
3522fa
17