bd8671kn ROHM Co. Ltd., bd8671kn Datasheet - Page 3

• Manufacturer Part Number: bd8671kn
• Description: Dc/dc Converter Ic For Camera Module For Car Navigation System
• Manufacturer: ROHM Co. Ltd.

◎PACKAGE OUTLINE
No.
◎PIN ASSIGNMENT
10
11
12
13
14
1
2
3
4
5
6
7
8
9
1pin mark
*12
PGND12
Symbol
TEST2
SW12
FB12
FC12
SS12
CTL1
CTL3
CTL2
H->L (ON->OFF) control, When CTL3=L. (Refer to NOTE ON USE-13)
GND
PVIN
V12
VIN
RT
Fig.-１ PACKAGE OUTLINE
D8671
VQFN-28
12V output voltage detection terminal
Error amplifier input terminal
Error amplifier output terminal
12V soft start adjustment capacity connection terminal
GND(0V connection)
12V coil connection terminal
Test terminal 2(0V is connected and use it usually).
3.3V output control terminal
Power supply input terminal
GND(0V connection)
Frequency adjustment resistance connection terminal
Power supply input terminal for PowerTr (=VIN)
-5V output control terminal
12V output control terminal (*12)
（
LOT No.
UNIT
Product number
Description
：mm）
PGNDM8
V12IN
MV5
CTL1
CTL2
CTL3
V8IN
MV8
V8
CM
VIN
CP
RT
REV. A
MV8IN
No.
15
17
20
21
22
25
26
27
16
18
19
23
24
28
BG
OSC
VREG
BG
PGNDV8
PGND33
Symbol
TEST1
TEST3
SGND
SW33
V12IN
SS33
TEST3
MV5
MV8
V33
CM
CP
V8
◎BLOCK DIAGRAM
OSC
PON,LVP,OVP
Fig.-2.BLOCK DIAGRAM
TEST2
MV5
Test terminal 2(0V is connected and use it usually).
3.3V coil connection terminal
Power GND (the same potential as terminal GND)
3.3V soft start adjustment capacity connection terminal
3.3V output voltage detection terminal
Test terminal 3 (It uses it by the open usually.)
Sense GND(the same potential as terminal GND)
-5V regulator output terminal
-8V charge pump output terminal
Capacity connection terminal for charge pump (－)
Power GND (the same potential as terminal GND)
Capacity connection terminal for charge pump (＋)
8V regulator output terminal
LDO12V voltage input terminal
Charge
Cntorol
Pump
TEST1
OSC
TSD
GND
PON,LVP,OVP
V12
SGND
Description
OSC
OSC
PON,LVP,OVP
V33
D
R
V
D
R
V
PGND12
V12
PVIN
SW33
SW12
SS33
V33
FC12
FB12
SS12
PGND33
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