Datasheet

MAX8543/MAX8544
Step-Down Controllers with Prebias Startup,
Lossless Sensing, Synchronization, and OVP
12 ______________________________________________________________________________________
MAX8544EEP
SS
COMP
MODE
SYNCO
POK
VL
GND
VL
EN
LX
ILIM2
CS-
CS+
PGND
DL
BST
DH
IN
ILIM1
FSYNC
FB
9
19
6
2
3
4
5
10
1
11
20
7
8
12
13
18
D1
C1
C2
C4A C4B C4C
VL
VL
17
16
14
15
C3
C6A C6B
SYNC OUT
R6
R3
R1
R7
R9
POK
R2
R8
D2
C5
C9
N3
N4
L1
V
OUT
= 2.5V
UP TO 15A
V
IN
= (10.8V TO 13.2V)
N2
N1
C7
C8
ON
OFF
SYNC IN
R4
R5
C11
C10
C12
Figure 1. Typical Applications Circuit with 12V (±10%) Input, 2.5V Output at Up to 15A, and 600kHz Switching Frequency