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PDF BD8682MUV-M Data sheet ( Hoja de datos )
| Número de pieza | BD8682MUV-M | |
| Descripción | Camera Module System Power Supply ICs | |
| Fabricantes | ROHM Semiconductor | |
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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.)
-40℃ to +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 structure：Silicon monolithic integrated circuit
.www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This product is not designed protection against radioactive rays
1/25
TSZ02201-0T3T0AM00030-1-2
29.Nov.2013 Rev.003
1 page  
BD8682MUV-M
Datasheet
7. Protection Blocks
Pin name
Protection
Function
Note
VCC
UVLO
All outputs are turned off
Reset of the OFF Timer Latch
VREG50
Vo1
(SW1, FB1)
UVLO
OCP
OCP + Timer Latch
SCP + Timer Latch
OVP
All outputs are turned off
ON Duty limited every cycle
OFF Latch
Ch1 internal FET is turned OFF
Reset of the OFF Timer Latch
SW1 ON duty is limited and the output voltage
lowered.
Reset the OFF Latch by UVLO, EN or TSD
OVP + Timer Latch OFF Latch
Reset the OFF Latch by UVLO, EN or TSD
PVCC2
PVCC4
OVP
OVP + Timer Latch
Ch1 internal FET is turned OFF
OFF Latch
Reset the OFF Latch by UVLO, EN or TSD
OCP + Timer Latch
Vo2 UVD + Timer Latch OFF Latch
Reset the OFF Latch by UVLO, EN or TSD
OVD + Timer Latch
OCP + Timer Latch
Vo3 UVD + Timer Latch OFF Latch
Reset the OFF Latch by UVLO, EN or TSD
Vo4
(SW4)
OVD + Timer Latch
OCP
OCP + Timer Latch
UVD + Timer Latch
ON Duty is limited every cycle
OFF Latch
SW4 ON duty is limited and the output voltage
lowered.
Reset OFF Latch by UVLO, EN or TSD
OVD + Timer Latch
Other
TSD
All outputs and VREG50 are
turned off
Auto recovery, release OFF Timer Latch
(UVLO: Undervoltage lockout circuit, OVD: Overvoltage detection, UVD: Undervoltage detection, OCP: Overcurrent protection, SCP: Short current protection,
Timer Latch: Typ.10ms, OVP: Overvoltage protection, TSD: Thermal shutdown)
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/25
TSZ02201-0T3T0AM00030-1-2
29.Nov.2013 Rev.003
5 Page 
BD8682MUV-M
Datasheet
4.9
4.8
4.7
4.6
4.5
4.4
4.3
-40 -15 10 35 60
tem perature[℃]
85
Figure 13. VCC UVLO operating voltage vs.
temperature
2.50
2.45
2.40
2.35
2.30
-40
-15
10 35 60
tem perature[℃]
85
Figure 14. RSTO detect voltage vs. temperature
1.2
Fosc1
1.1
Fosc4
1.0
0.9
0.8
0.7
0.6
0.5
0.4
-40
-15
10 35 60
tem perature[℃]
85
Figure 15. Frequency1, 4 vs. temperature
55
53
51
49
47
45
-40 -15 10 35 60
tem perature[℃]
85
Figure 16. Frequency of OSC_D vs. temperature
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
11/25
TSZ02201-0T3T0AM00030-1-2
29.Nov.2013 Rev.003
11 Page | ||
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