MAX1638 Datasheet, PDF (12/16 Pages) Maxim Integrated Products – High-Speed Step-Down Controller with Synchronous Rectification for CPU Power

High-Speed Step-Down Controller with
Synchronous Rectification for CPU Power
R6
10Ω
C9
C7
0.1µF
10µF
C5
0.1µF
C8
4.7µF
TO V_DD
V_CC
V_DD
C11
3.3nF
CSH
R5
100k
R7
C12
3.3nF
39Ω
R1
PWROK
CSL
R8
D0
39Ω
BST
D1
D2
DH
N1
D3
R10
(OPTIONAL)
D4 MAX1638 _LX
REF
LG
R9
(OPTIONAL)
DL
N2
NO
CONNECTION ^FREQ
PGND
CC2
TO
AGND
CC2
RC1 CC1
CC1
REF
C6, 1.0µF
CERAMIC
NDRV
PDRV
FB
AGND
C1
D2
CMPSH-3
C4
0.1µF
L1
D1
(OPTIONAL)
C2
V_IN = 5V
P1
R11
N3
V_OUT = 1.3V
TO 3.5V
LOCAL
BYPASSING
LOAD
Figure 5. Buck Regulator with High-Side Current Sensing
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