CYNTEC MUN3CAD05-JF User manual

Rev.03
1
MUN3CAD05-JF EVB GUIDE
ELECTRICAL SPECIFICATION:
Parameters
Symbol
Value
Note
Input Voltage
VIN
2.7V~5.5V
Output Voltage
VOUT
Adjust
Output Current
IOUT
5A
Enable Voltage
EN
1.2V~5V
PROGRAMMING OUTPUT VOLTAGE:
(EQ.1)
Assume RFB_TOP (R3) set 100 Kohm, the resistance according to typical output voltage is shown in table
1
Vout
1V
1.2V
1.8V
2.5V
3.3V
RFB_BOT
(R4~R8)
150k
100k
50k
31.58k
22.22k
TABLE 1 OUTPUT VOLTAGE SETTING
LOAD TRANSIENT RESPONSE INCREASE:
In some applications, adding a ceramic cap (CFB) (C3) in parallel with RFB-top may further speedy up
the load transient responses, recommend capacitance as below table 2.
VOUT (V)
CFB (C3) (pF)
0.6~3.3
100
TABLE 2 RECOMMEND CFB FOR LOAD TRANSIENT








BOTFB
TOPFB
OUT R
R
VV
_
_
16.0)(

Rev.03
2
MUN3CAD05-JF EVB GUIDE
EVALUATION BOARD SCHEMATIC:
QUICK START GUIDE:
1. Power the MUN3CAD05-JF module on while Disable jump open.
2. Short S1~S6 can set output voltage from 1.0V to 3.3V
S1
S2
S3
S4
S5
S6
VOUT
1V
1.2V
1.8V
2.5V
3.3V
N.C
3. Short Disable jump can be turn off Power module.
Load
Input Power

Rev.03
3
MUN3CAD05-JF EVB GUIDE
PRIENTED CIRCUIT BOARD LAYOUT:
Top Layer Mid 1 Layer
Mid 2 Layer Bottom Layer

Rev.03
4
MUN3CAD05-JF EVB GUIDE
BOM LIST:
COUNT
REF DES
DESCRIPTION
PART NUMBER
MFR
1
U1
Power module, 3.0*3.0*1.3mm
MUN3CAD05-JF
Cyntec
4
C7, C8,
C11, C12
MLCC, 22uF, 6.3V, X7T, 0805
GRM21BD70J226ME44L
Murata
1
C3
MLCC, 100pF, 50V, X7R, 0402
0402B101K500
Walsin
3
R1, R3, R5
Resistor, 100kOhm, ±1%, 0402
Std
Std
1
R4
Resistor, 150kOhm, ±1%, 0402
Std
Std
1
R6
Resistor, 49.9kOhm, ±1%, 0402
Std
Std
1
R7
Resistor, 31.6kOhm, ±1%, 0402
Std
Std
1
R8
Resistor, 22.1kOhm, ±1%, 0402
Std
Std
0
C1, C2, C4,
C5, C6, C9,
C10, C13
N.C
-
-
0
R2, R9, R10
N.C
-
-
0
L1
N.C
-
-

Rev.03
5
MUN3CAD05-JF EVB GUIDE
REVISION HISTORY:
Date
Revision
Changes
2021.01.11
00
Issue initial preliminary EVB guide.
2021.09.14
01
Modify the Bom list.
2022.10.14
02
Modify the schematic and layout.
2022.12.22
03
Modify the TABLE 2.