W83321S Datasheet, PDF (9/18 Pages) Winbond – N-Channel FET Synchronous Buck Regulator Controller

W83321S/W83321G
8. LAYOUT PLACEMENT
G
D _Q1
S
C3
1uF
C2
2000uF
VCC
C9
1uF
W83321S
G
L1
D _Q2
S
C6
2000uF
C7
2000uF
BOOT PIN1
C1 0.1uF
Layout Notes:
1.Put Q1 and Q2 as close as possible and using wide,short
printed circuit traces between Q1 source and Q2 drain.
2.Put C2 and C3 to be near the Q1 drain and Q2 source nodes.
3.Put C1 as close as to BOOT pin.
4.Put C9 as close as to VCC pin.
Publication Release Date: January, 2006
-9-
Revision 0.51