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BD8682MUV-M Datasheet Download - Rohm

Номер произв BD8682MUV-M
Описание Camera Module System Power Supply ICs
Производители Rohm
логотип Rohm логотип 

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BD8682MUV-M Даташит, Описание, Даташиты
Datasheet
System Power Supply ICs for Automotive Camera Modules
Camera Module System Power
Supply ICs for CMOS Sensor
BD8682MUV-M
General Description
BD8682MUV-M is a power supply for a camera module
that is connected directly to the battery voltage. LDOs
for the CMOS sensor, a DC/DC converter for the ISP
and a wide input range step-down DC/DC converter are
integrated. Furthermore, because of its integrated
variable output functionality, it can be used with various
configurations of CMOS sensors and ISP.
BD8682MUV-M is available in VQFN32SV5050 package,
making it ideal for small camera modules.
Features
CH1: Integrated high voltage type Nch MOSFET
step-down DC/DC converter ( variable output voltage
via external resistors)
CH2: Pch output LDO (selectable output: 2.8V or
3.3V)
CH3: Pch output LDO (selectable output: 1.8V or
OFF)
CH4: Integrated Pch MOSFET step-down DC/DC
converter. (selectable output: 1.5V, 1.2V, 1.8V).
Synchronous rectification (CH1 and CH4)
Reset for CH2 LDO
Integrated overvoltage, undervoltage and overcurrent
protection (10ms timer latch)
11ms off timer
Sequence control for all outputs
Small package: VQFN32SV5050
AEC-Q100 Qualified
Typical Application Circuit
Application circuit schematic1
(5.9V~18V)
+B
L0
100µH
CIN01
0.1µF
CIN02
22µF×3
CIN
1µF
VCC
PVCC4
Vo4
(1.5V, 1.2V, 1.8V)
L4
10µH
CIN4
1µF
SW4
CO4
10µF
PGND4
VO4
Vo3
(1.8V)
SS4
CSS4
0.01µF
VO3
CO3
4.7µF
SS3
CSS3
0.01µF
GND
EN
Key Specifications
Input voltage range:
Standby current:
Operating temperature range:
Switching frequency (ch1):
Switching frequency (ch4):
Output current (ch1):
Output current (ch2):
Output current (ch3):
Output current (ch4):
5.9V to 40V
10μA (Max.)
-40to +105
500kHz (Typ.)
1MHz (Typ.)
500mA (Max.)
130mA (Max.)
60mA (Max.)
250mA (Max.)
Package
VQFN32SV5050
W (Typ.) x D (Typ.) x H (Max.)
5.00mm x 5.00mm x 1.00mm
VQFN32SV5050
Applications
Camera systems using CMOS sensors such car cameras
and surveillances cameras.
PVCC1
VREG50
BOOT1
SW1
PGND1
FB1
SS1
COMP1
PVCC2
VO2
SS2
RSTO
CIN1
10µF
CB1
1µF
22µH
L1
D1
5.0V
C5
1µF
CO1
22µF
RFB1
7.5kΩ
CFB1
2200pF
CSS1
0.047µF
RC1
51kΩ
CC1
2200pF
RFB2
2.4kΩ
(2kΩ)
Vo1
CIN2
1µF
CO2
4.7µF
CSS2
0.01µF
RRST
4.7kΩ
Vo2
(2.8V, 3.3V)
Figure 1. Application circuit schematic 1
Product structureSilicon monolithic integrated circuit
.www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
This product is not designed protection against radioactive rays
1/25
TSZ02201-0T3T0AM00030-1-2
29.Nov.2013 Rev.003







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BD8682MUV-M Даташит, Описание, Даташиты
BD8682MUV-M
Pin Configuration
(TOP VIEW)
24 23 22 21 20 19 18 17
Datasheet
25 SW4
26 PVCC4
27 SS1
28 COMP1
29 FB1
30 PGND1
31 SW1
32 BOOT1
RSTO 16
TEST5 15
TEST4 14
TEST3 13
TEST2 12
SEL_CH42 11
SEL_CH41 10
SEL_CH3 9
1
Pin Description
Pin No. Symbol
234567
Figure 2. Pin Configuration
Function
8
Pin No.
1 PVCC1 Power supply pin for CH1 DC/DC
17
2 VCC Power supply pin
18
3
EN Control pin (input for reverse signal)
19
4 TEST1 Test pin 1
20
5 GND Ground pin
21
6 VREG50 Internal regulator output pin
22
7 SEL_T EN mode setting pin
23
8
SEL_CH2
Output voltage select pin for CH2
LDO
24
9
SEL_CH3
Output voltage select pin for CH3
LDO
25
10
SEL_CH41
Output voltage select pin 1 for CH4
DC/DC
26
11
SEL_CH42
Output voltage select pin 2 for CH4
DC/DC
27
12 TEST2 Test pin 2
28
13 TEST3 Test pin 3
29
14 TEST4 Test pin 4
30
15 TEST5 Test pin 5
31
16 RSTO Reset output pin for CH2 LDO
*Test pins 1 through 5 should be connected to ground.
SEL pins should be connected to VREG50 or ground.
32
Symbol
SS2
VO2
Function
Soft start time setting pin for CH2
LDO
Output pin for CH2 LDO
PVCC2 Power supply pin for CH2 LDO
VO3
SS3
SS4
VO4
PGND4
Output pin for CH3 LDO
Soft start time setting pin for CH3
LDO
Soft start time setting pin for CH4
DC/DC
Output voltage detection pin for CH4
DC/DC
Power ground pin for CH4 DC/DC
SW4 Output pin for CH4 DC/DC
PVCC4
SS1
FB1
Power supply pin for CH4 DC/DC
Soft start time setting pin for CH1
DC/DC
Error amp input pin for CH1 DC/DC
COMP1 Error amp Output pin for CH1 DC/DC
PGND1 Power ground pin for CH1 DC/DC
SW1 Output pin for CH1 DC/DC
BOOT1 Bootstrap pin for CH1 DC/DC
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
2/25
TSZ02201-0T3T0AM00030-1-2
29.Nov.2013 Rev.003







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BD8682MUV-M Даташит, Описание, Даташиты
BD8682MUV-M
Block Diagram
VCC
PVCC4
UVLO
VREF
REG
CTL
VREG50
TSD
TSD
OSC
UVLO50
Datasheet
PVCC1
VREG50
BOOT1
SW4
PGND4
VO4
Vo select
SS4
VO3
SS3
DRV
Logic
CTL4
UVLO
TSD
CTL1
UVLO
TSD
DRV
Logic
ERRAMP
PWM
PWM
ERRAMP
0.5V
CTL4
slope
ch4 SWREG
ch3 LDO
CTL3
AMP
UVLO
UVLO 0.8V
TSD
slope
CTL1
0.8V
ch1 SWREG
ch2 LDO
CTL2
AMP
0.8V UVLO
TSD
Vo_select
GND
EN
SEL_T
COUNTER
SEQUENCER
CTL
Reverse
Judgment
OFF
Timer
CTL1
Sequence
CTL24
Vo_select
Vo Select
OFF_LATCH
OSC_D
Protect
OFF
Latch
Timer
OVD
LVD
OCP
CTL
UVLO
SW1
PGND1
FB1
SS1
COMP1
PVCC2
VO2
SS2
RSTO
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
Figure 3. Block diagram
3/25
TSZ02201-0T3T0AM00030-1-2
29.Nov.2013 Rev.003










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