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BD00FA3WEFJ-E2 데이터시트(PDF) 8 Page - Rohm

부품명 BD00FA3WEFJ-E2
상세설명  300mA Secondary Variable Output LDO Regulators for Local Power Supplies
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제조업체  ROHM [Rohm]
홈페이지  http://www.rohm.com
Logo ROHM - Rohm

BD00FA3WEFJ-E2 데이터시트(HTML) 8 Page - Rohm

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2010.04 - Rev.A
© 2010 ROHM Co., Ltd. All rights reserved.
BD00GA3WEFJ
Technical Note
8/11
Evaluation Board Circuit
Evaluation Board Parts List
About Board Layout
Input capacitor Cin of VCC (Vin) should be placed very close to VCC(Vin) pin as possible, and used broad wiring pattern.
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.
VFB pin has comparatively high impedance, and is apt to be effected by noise, so floating capacity should be minimum as
possible. Please be careful in wiring drawing
Please take GND pattern space widely, and design layout to be able to increase radiation efficiency.
For output voltage setting
Output voltage can be set by FB pin voltage(0.800V typ.)and external resistance R1, R2.
The use of resistors with R1+R2=5k to 90k is recommended)
Designation
Value
Part No.
Company
Designation
Value
Part No.
Company
R1
43kΩ
MCR01PZPZF4302
ROHM
C4
R2
8.2kΩ
MCR01PZPZF8201
ROHM
C5
1uF
CM105B105K16A
KYOCERA
R3
C6
R4
C7
R5
C8
R6
C9
C1
1uF
CM105B105K16A
KYOCERA
C10
C2
U1
BD00GA3WEFJ
ROHM
C3
U2
VO
EN
GND
VCC (Vi n)
Cin
R1
R2
Co
N.C
GND
FB
N.C
N.C.
VOUT
2
VOUT
C7
3
4
7
5
U1
8
C1
C2
C3
R1
R2
R6
U2
C8
R4
R3
C6
C5
C4
R5
Gate
C9
C10
1
VCC
6
EN
GND
SW1
EN
VO = VFB×
R1+R2
R2


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