3/10
User
’s Guide
BD9A301MUV-EVK-001
© 2017 ROHM Co., Ltd.
No. 60UG004E Rev.001
APR.2017
1 PVIN
3 PGND
15 EN
5 AGND
SW 12
ITH 7
FB 6
U1
BD9A301MUV-LB
C2
L1
C4
C8
R3
R1
R2
VIN
VOUT
C5
1
7
EPAD
C1
C10
C3
SW1
ON
OFF
GND
J1
TP1
TP2
J2
TP3
TP4
GND
TP5
TP6
C6
SW 11
SW 10
SS 9
TP7
C9
BOOT 13
C7
R7
14 PGD
R4
16 AVIN
2 PVIN
4 PGND
8 MODE
R5
R6
PGD
Circuit Diagram
V
IN
= 2.7V to 5.5V, V
OUT
= 1.8V
Figure 2. BD9A301MUV-EVK-001 Circuit Diagram
Bill of Materials
2
C1, C7
Ceramic Capacitor
0.1µF
50V, B, ±10%
GRM188B31H104KA92D
MURATA
1608
1
C2
Ceramic Capacitor
10µF
16V, B, ±10%
GRM31CB31C106KA88L
MURATA
3216
0
C3
Ceramic Capacitor
-
Not installed
-
-
3216
2
C4, C5
Ceramic Capacitor
22µF
6.3V, B, ±20%
GRM21BB30J226ME38L
MURATA
2012
0
C6
Ceramic Capacitor
-
Not installed
-
-
2012
1
C8
Ceramic Capacitor
3300pF 50V, B, ±10%
GRM188B11H332KA01D
MURATA
1608
1
C9
Ceramic Capacitor
0.01µF 50V, B, ±10%
GRM188B11H103KA01D
MURATA
1608
0
C10
Ceramic Capacitor
-
Not installed
-
-
1608
1
L1
Inductor
1.5µH
±30%, DCR=14.3mΩmax, 7.3A
CLF7045T-1R5N
TDK
7269
1
R1
Resistor
30kΩ
1/10W, 50V, ±1%
MCR03EZPFX3002
ROHM
1608
1
R2
Resistor
24kΩ
1/10W, 50V, ±1%
MCR03EZPFX2402
ROHM
1608
1
R3
Resistor
9.1kΩ
1/10W, 50V, ±1%
MCR03EZPFX9101
ROHM
1608
1
R4
Resistor
10kΩ
1/10W, 50V, ±1%
MCR03EZPFX1002
ROHM
1608
2
R5, R7
Resistor
0Ω
Jumper
MCR03EZPJ000
ROHM
1608
0
R6
Resistor
-
Not installed
-
-
1608
PH-1x03SG
USECONN
-
61300311121
Wurth Electronics Inc.
-
1
U1
IC
-
Buck DC/DC Converter
BD9A301MUV-LB
ROHM
VQFN016V3030
TB111-2-2-U-1-1
Alphaplus Connectors & Cables
-
OSTTC022162
On Shore Technology Inc
-
MJ254-6BK
USECONN
-
969102-0000-DA
3M
-
1
-
Jumper
-
Jumper pin for SW1
2
J1, J2
Terminal Block
-
2 contacts, 15A, 14 to 22AWG
1
SW1
Pin header
-
2.54mm × 3 contacts
Reference
Designator
Count
Manufacturer
Part Number
Manufacturer
Configuration
(mm)
Type
Value
Description
