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User
’s Guide
BD9E101FJ-EVK-001
© 2014 ROHM Co., Ltd.
No. 60UG012E Rev.003
APR.2017
1 BOOT
2 VIN
7 PGND
3 EN
4 AGND
SW 8
COMP 6
FB 5
U1
BD9E101FJ-LB
C7
C2
L1
C4
C6
R3
R1
R2
VIN
VOUT
C5
C1
C8
R4
C3
SW1
ON
OFF
GND
J1
TP1
TP2
J2
TP3
TP4
GND
TP5
TP6
Circuit Diagram
V
IN
= 7.2V to 36V, V
OUT
= 5.0V
Figure 2. BD9E101FJ-EVK-001 Circuit Diagram
Bill of Materials
2
C1, C7
Ceramic Capacitor
0.1µF
50V, B, ±20%
GRM188B31H104MA92
MURATA
1608
1
C2
Ceramic Capacitor
10µF
50V, B, ±10%
GRM32EB31H106KA12
MURATA
3225
0
C3
Ceramic Capacitor
-
Not installed
-
-
3225
1
C4
Ceramic Capacitor
22µF
10V, B, ±10%
GRM31CB31A226KE19
MURATA
3216
0
C5
Ceramic Capacitor
-
Not installed
-
-
3216
1
C6
Ceramic Capacitor 2200pF 50V, B, ±10%
GRM188B11H222KA01
MURATA
1608
1
C8
Ceramic Capacitor
100pF 50V, CH, ±5%
GRM1882C1H101JA01
MURATA
1608
1
L1
Inductor
4.7µH
±30%, DCR=26mΩmax, 4.1A
CLF7045T-4R7N
TDK
7269
1
R1
Resistor
12kΩ 1/10W, 50V, 1%
MCR03EZPFX1202
ROHM
1608
1
R2
Resistor
3kΩ
1/10W, 50V, 1%
MCR03EZPFX3001
ROHM
1608
1
R3
Resistor
24kΩ 1/10W, 50V, 1%
MCR03EZPFX2402
ROHM
1608
1
R4
Resistor
0Ω
Jumper
MCR03EZPJ000
ROHM
1608
PH-1x03SG
USECONN
-
61300311121
Wurth Electronics Inc.
-
1
U1
IC
-
Buck DC/DC Converter
BD9E101FJ-LB
ROHM
SOP-J8
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
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