bd00hc0wefj ROHM Co. Ltd., bd00hc0wefj Datasheet - Page 8

• Manufacturer Part Number: bd00hc0wefj
• Description: 1a Secondary Variable Output Ldo Regulators For Local Power Supplies
• Manufacturer: ROHM Co. Ltd.

●Evaluation Board Circuit
●Evaluation Board Parts List
●About Board Layout
© 2010 ROHM Co., Ltd. All rights reserved.
BD00HC0WEFJ
www.rohm.com
･Input capacitor Cin of VCC (Vin) should be placed very close to VCC(Vin) pin as possible, and used broad wiring pattern.
・VFB pin has comparatively high impedance, and is apt to be effected by noise, so floating capacity should be minimum as
・Please take GND pattern space widely, and design layout to be able to increase radiation efficiency.
・For output voltage setting
Designation
Output capacitor Co also should be placed close to IC pin as possible. In case connected to inner layer GND plane, please
use several through hole.
possible. Please be careful in wiring drawing
Output voltage can be set by FB pin voltage（0.800V typ.）and external resistance R1, R2.
R1
R2
R3
R4
R5
R6
C1
C2
C3
(The use of resistors with R1+R2=5k to 90k is recommended）
C8
R4
U2
VO = V
Gate
R3
8.2kΩ
43kΩ
Value
1μF
‐
‐
‐
‐
‐
‐
FB
C4
×
R6
C6
C5
C7
R5
R
MCR01PZPZF4302
MCR01PZPZF8201
CM105B105K16A
1
R
+R
VOUT
2
2
VCC (Vi n)
Part No.
GND
‐
‐
‐
‐
‐
‐
C9
C10
VO
R1
Cin
KYOCERA
Company
R1
R2
ROHM
ROHM
Co
‐
‐
‐
‐
R2
1
2
3
4
EN
8/11
FB
VOUT
GND
N.C.
GND
Designation
C10
U1
C4
C5
C6
C7
C8
C9
U1
U2
VCC
N.C
N.C
EN
7
6
5
Value
8
1μF
‐
‐
‐
‐
‐
‐
‐
SW1
CM105B105K16A
BD00HC0WEFJ
Part No.
‐
‐
‐
‐
‐
‐
C3
C2
C1
EN
Technical Note
2010.04 - Rev.A
KYOCERA
Company
ROHM
‐
‐
‐
‐
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