bd8671kn ROHM Co. Ltd., bd8671kn Datasheet

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bd8671kn

Manufacturer Part Number
bd8671kn
Description
Dc/dc Converter Ic For Camera Module For Car Navigation System
Manufacturer
ROHM Co. Ltd.
Datasheet
1.BD8671KN.pdf (5 pages)
STRUCTURE
PRODUCT NAME
MODEL NAME
BLOCK DIAGRAM
◎FEATURES：
◎ABSOLUTE MAXIMUM RATING:（Ta=25℃）
◎OPERATION CONDITION
*8 V8、CP terminal voltage
*10 V8 terminal voltage ABSOLUTE MAXIMUM RATING is VIN3 or 10V is low. Between V8 terminal voltage and MV5 terminal voltage ABSOLUTE MAXIMUM RATING is 15V.
*11 70mm×70mm, thickness1.6mm, less than 3% share of copper foil when implementing glass epoxy board.
*1 FB12、SS12、TEST1、TEST2、TEST3、RT、CTL1、CTL2、CTL3、SS33、V33 terminal voltage *2 V12 terminal voltage *3 V12IN terminal voltage
*4 MV8 terminal voltage *5 FC12 terminal voltage *6 SW33 terminal voltage *7 SW12 terminal voltage
This product is not designed for protection against radioactive rays.
VIN supply voltage
PVIN supply voltage
Input terminal voltage 1
Input terminal voltage 2
Input terminal voltage 3
Input terminal voltage 4
Output terminal voltage 1
Output terminal voltage 2
Output terminal voltage 3
Output terminal voltage 4
Output terminal voltage 5
Power dissipation
Operating temperature
Storage temperature
Operating at higher than Ta=25℃, 5.8mW shall be reduced per 1
VIN supply voltage
Parameter
Parameter
*1
*2
*3
*4
*5
*6
*7
*8
*9
*9 MV5、CM terminal voltage
：
：
：
：
・+3.3V output Step down DC/DC converter for asynchronous rectification system
・+12V output Boost DC/DC converter for asynchronous rectification system
・-5V output Voltage control charge pump for reversing type for negative voltage
・Soft start function
・Building in low voltage and over voltage protection function
・Building in terminal RT OPEN/Short protection
・The frequency can be set by external resistance
・Concentrated protection control with built-in sequencer
・VQFN-28 package
(Please set the power-supply voltage in consideration of a power dissipation.)
Silicon Monolithic Integrated Circuit
DC/DC converter IC for camera module for car navigation system
B D 8 6 7 1 K N
Fig. - 2
Symbol
Symbol
VOUT1
VOUT2
VOUT3
VOUT4
VOUT5
PVIN
VIN1
VIN2
VIN3
VIN4
Topr
Tstg
VIN
VIN
Pd
REV. A
MIN
4.5
-10.0
VIN4
-0.3
-0.3
-0.3
-0.3
-0.3
-0.3
-0.3
-0.3
-0.3
-40
-55
0.725
Limits
TYP
～
～
～
～
～
～
～
～
～
～
～
～
～
6.0
*11
+18.0
VIN
VIN
+20.0
+20.0
+0.3
VIN
PVIN
+20.0
VIN3
+0.3
+85
+150
MAX
9.0
*10
Unit
Unit
W
℃
℃
V
V
V
V
V
V
V
V
V
V
V
V
1/4

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bd8671kn Summary of contents

Page 1

STRUCTURE ： PRODUCT NAME ： MODEL NAME ： BLOCK DIAGRAM ◎FEATURES： ・+3.3V output Step down DC/DC converter for asynchronous rectification system ・+12V output Boost DC/DC converter for asynchronous rectification system ・-5V output Voltage control charge pump for reversing type ...

Page 2

CHARACTERISTICS (Unless otherwise noted Ta=25℃, VIN=6.0V,PVIN=6.0V,CTL1,2,3=6.0V,GND=0V) Parameter VIN,PVIN Circuit current 1 VIN,PVIN Circuit current 2 V12IN Circuit current Range of DC/DC converter oscillation frequency setting <Step-down DC/DC converter of 3.3V output part> 3.3V output voltage Terminal SS Discharge resistance ...

Page 3

ASSIGNMENT No. Symbol Description 1 V12 12V output voltage detection terminal 2 FB12 Error amplifier input terminal 3 FC12 Error amplifier output terminal 4 SS12 12V soft start adjustment capacity connection terminal 5 PGND12 GND(0V connection) 6 SW12 12V ...

Page 4

ON USE 1．About the absolute maximum rating Attention is brushed off enough to the quality control likely to destroy when the absolute maximum rating such as impressed voltages (VCC_IN,DCIN) and ranges (Topr) of the operating temperature as ...

Page 5

No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose ...

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