MAX8723EVKIT Maxim Integrated Products, MAX8723EVKIT Datasheet - Page 3

• Manufacturer Part Number: MAX8723EVKIT
• Description: Display Modules & Development Tools MAX8723 KIT MAX8723 KIT
• Manufacturer: Maxim Integrated Products

Specifications of MAX8723EVKIT

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The EV kit provides for the use of an external synchro-
nous rectifier. To utilize an external synchronous
rectifier, install an adequate n-channel MOSFET (Q1)
and remove or replace diode D1. Installing a smaller
diode in conjunction with the synchronous rectifier
improves efficiency. Leaving the diode unpopulated
reduces cost. See Table 4 for recommended components.
Figure 1. MAX8723 EV Kit Schematic
SHDN
PGND
GND
VIN
VL
External Synchronous Rectifier
(PC TRACE)
SHORT
100kΩ
JU1
R2
R3
VCC
VCC
C7
47µF
25V
(PC TRACE)
_______________________________________________________________________________________
SHORT
VREF
VREF
VCC
JU2
3
C8
OPEN
C4
0.22µF
VCC
4
2
1
R6
0Ω
4.7µF
C3
1.0µF
16V
C1
10
11
13
16
15
14
V
V CC
REF
V CC 2
SHDN
FSEL
L
12
GND
1
IN
MAX8723
0Ω
R1
U1
C2
0.1µF
25V
4
I.C.
9
INL
PGND
OUT
BST
EXT
FB
LX
MAX8723 Evaluation Kit
6
3
2
8 1
7
5
Table 4. Recommended Configurations
0.1µF
Fai r chi l d FD N 339AN
n-channel MOSFET
C5
Not installed
(Supersot-3)
(default)
3A, 20V
3
2
R5
0Ω
Q1
Q1
OPEN
OPEN
R4
D1
2.2µH
L1
500m A, 30V S chottky
Inter nati onal Recti fi er
3A, 30V S chottky
d i od e ( S OD 123)
Toshi b a C M S 03
d i od e ( M - fl at)
Not installed
M BR0530
D1
OPEN
C9
22µF
C6
EF F IC IEN C Y ( % )
I
OU T
( V
1 .5 M H z)
IN
= 2A A T
83
84
85
= 12 V,
PGND
VOUT
3