bd8674kn ROHM Co. Ltd., bd8674kn Datasheet - Page 4

• Manufacturer Part Number: bd8674kn
• Description: Dc/dc Converter Ic For Camera Module For Car Navigation System
• Manufacturer: ROHM Co. Ltd.

◎BLOCK DIAGRAM
＊TEST1,2,3,4 terminal should be connected.
＊PVIN and VIN terminal should be connected each other.
＊Phase compensation circuit of switching regulator is in clunded on this IC. But if switching regulator is used with
unrecommeded external parts or under unrecommeded condition, external phase compensation is needed.
4.5V-9V
6800pF
BLOCK DIAGRAM and recommended external parts constant –fig.2
27kΩ
TEST1
TEST2
TEST3
TEST4
FB33
ＳＳ33
EN1
EN2
ＲＴ
RSTDLY
ＯＶＰ
ＬＶＰ
Ｒｅｓｅｔ
Ｖ33
RSTO
Ｃｏｎｔｒｏｌ
ＳＥＱ
FC33
ＯＳＣ
TEST5
1000pF
REV. C
SS5
ＯＶＰ
ＬＶＰ
Pre
Dri
ve
Charge
Pump
VIN
15,24
ＧＮＤ
PＶＩＮ
10uF
ＰＧＮＤ
Ｖ33ＩＮ
ＣＭ
ＣＰ
V66
V66IN
Ｖ5
FB5
ＳＷ
0.47uF
10uH
0.1uF
10uF
1uF
30mA
10uF
5V
250mA
3.3V
4/5