Datasheet

Evaluates: MAX8643
MAX8643 Evaluation Kit
4 _______________________________________________________________________________________
IN
REFIN
C7
OPEN
C8
0.022µF
U1
MAX8643
PWRGD
COMP
OUT
PGND
PGND
PGND
FB
LX
LX
LX
BST
V
DD
PWRGD
GND
OUT
GND
CTL2
CTL1
EN
V
DD
IN
C9
0.1µF
C14
OPEN
C12
33pF
C2
22µF
C4
0.01µF
C15
1000pF
R5
20kΩ
L1
0.47µH
R6
158Ω
1%
C10
560pF
R4
2.67kΩ
1%
C11
1500pF
R9
OPEN
R8
OPEN
R7
49.9kΩ
1%
R10
2.2Ω
C3
0.1µF
C1
22µF
C13
OPEN
R1
10Ω
V
DD
2
3
4
5
6
21
IN
22
24
IN
23
JU1
FREQ
11
12
20
19
18
PGND
17
9
8
10
15
14
16
13
C5
1µF
R2
10kΩ
R3
1kΩ
C6
0.01µF
JU3
3
1
2
V
DD
JU4
3
1
2
V
DD
JU2
REFIN
SS
17
Figure 2. MAX8643 EV Kit Schematic