Instruction Manual

MAX1624/MAX1625
High-Speed Step-Down Controllers with
Synchronous Rectification for CPU Power
10 ______________________________________________________________________________________
LOCAL
BYPASSING
N1
R1
N2
C2
R3
100kΩ
R2
200kΩ
C10
(OPTIONAL)
D1
(OPTIONAL)
R9
(OPTIONAL)
R10
(OPTIONAL)
C12
4.7nF
C11
4.7nF
V
CC
V
DD
CSH
PWROK
CSL
BST
DH
LX
DL
PGND
FB
AGND
REF
CC1
CC2
CC2
CC1
RC1
TO
AGND
C6, 1.0µF
CERAMIC
R4, 40.1kΩ
FOR 500kHz
R5
100kΩ
C9
0.1µF
C7
4.7µF
R6
100Ω
TO V
DD
FREQ
C5
0.1µF
C8
4.7µF
D2
CMPSH-3
C4
0.1µF
V
IN
= 5V
C1
R7
39Ω
R8
39Ω
LOAD
V
OUT
L1
MAX1625
Figure 2. MAX1625 Standard Application Circuit