Rainbow Electronics MAX1638 - Manual (Page 8)

MAX1638
High-Speed Step-Down Controller with
Synchronous Rectification for CPU Power
8 _______________________________________________________________________________________
+
-
+ -
REF
REF4 REF3 REF2
REF
FB D0–D4 PWROK PDRV NDRV
CC2
CC1
REF1
5
10k
40k
WINDOW
CONTROL AND
DRIVE LOGIC
OSCILLATOR
SLOPE
COMPENSATION
AGND
V
CC
FREQ
REF4 REF1
REF
REF3 REF2
CSL
CSH
LG
BST
DH
LX
V DD
DL
RESET
Q
Q
SET
PGND
MAX1638
N
g m
Figure 2. Simplified Block Diagram