Supply IC. BD8174MUV Datasheet

BD8174MUV IC. Datasheet pdf. Equivalent

BD8174MUV Datasheet
Recommendation BD8174MUV Datasheet
Part BD8174MUV
Description Multi-channel System Power Supply IC
Feature BD8174MUV; Datasheet Power Supply IC Series for TFT-LCD Panels Output voltage fixed-type Multi-channel System .
Manufacture Rohm
Datasheet
Download BD8174MUV Datasheet




Rohm BD8174MUV
Datasheet
Power Supply IC Series for TFT-LCD Panels
Output voltage fixed-type
Multi-channel System Power Supply IC
BD8174MUV
General Description
The BD8174MUV is a system power supply IC that
generates 6 power supply channels required by TFT-LCD
panels on a single chip.
Output voltage and sequence is fixed so that it is possible
to control output with few external components.
Key Specifications
Power Supply Voltage 1 Range:
Oscillating Frequency:
Operating Temperature Range:
10V to 14V
700kHz(Typ)
-40°C to +105°C
Package
W(Typ) x D(Typ) x H(Max)
Features
Step-up DC/DC Converter with Built-in 3A FET
Synchronous Step-down DC/DC Converter with
Built-in 2A FET
High Voltage LDO (50mA)
Low Voltage LDO (400mA)
Positive/ Negative Charge Pumps (Integrated-diode)
10bit DAC 4CH
VCOM Amplifier
Gate Shading Function
All-output Shut Down Function
Power Good Function
Protection Circuits:
Under-Voltage Lockout Protection Circuit
Thermal Shutdown Circuit
Over Current Protection Circuit
Over Voltage Protection Circuit
Timer Latch Type Short-Circuit Protection Circuit
Constant Startup Sequence
VQFN048V7070
7.00mm x 7.00mm x 1.00mm
Applications
LCD TV power supplies
Product structureSilicon monolithic integrated circuit
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
This product has no designed protection against radioactive rays
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Rohm BD8174MUV
BD8174MUV
Typical Application Circuit (1)
1. VCC12V input application
VDD
(3.3V)
LVLDO
(1.2/1.5/1.8V)
LVCTL
PG VDD
BOOT
LVCTL
PG
PVCC2
FB1
COMP1
PGND1
PGND1
SW1
SW1
LSO1
LSO1
BD8174MUV
OUT0
SCP
DACGND
FBLD1
HVLDO
INP
INN
VCOM
THR
CTL
DRN
COM
OUT0
HVLDO
VCOM
THR
CTL
COM
VIN
(12V)
VLS
VGH
(35.2V)
2. Startup sequence
VIN input
VDD1
(Step-down)
LVLDO
VGL
(-6V)
VLS
VGL
VGH
GS
(Step-up)
(Negative charge pump) (Positive charge pump)
HVLDO (15.2V)
PG
DAC Control
DAC OUT
3. Power up sequence
VIN(12V)
VCOM
VDD(3.3V)
LVLDO(1.2/1.5/1.8V)
DAC Control
VLS(15.6V)
HVLDO(15.2V)
DAC OUT
VCOM
VGH(35.2V)
80%
2m(typ)
PG
GS logic
VGL(-6V)
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
2/38
TSZ02201-0313AAZ00670-1-2
17.Feb.2016 Rev.001



Rohm BD8174MUV
BD8174MUV
Block Diagram
VIN(12V)
C12
LSO1
47
48
L11
D11
C11
SW1
45
46
PGND
43
44
C13
R12
R11
FB1 41
COMP1
42
C14 R14
PVCC1
12
VCC
OCP
STEP UP
DC/DC
Soft
Start
REF
ERR
GCTL
34
C15
Load SW
Control
SEQUENCE
CONTROL
OCP
STEP DOWN
DC/DC
REG5
Soft
Start VDD
REF
ERR
FB2
PVCC2
40
C22
SW2
35
PGND2
36
L21
C21
37
BOOT
C25
VDD
3.3V
33
VDD_S
VLS
15.6V
VGH
35.2V
HVCC
HVCC 4
OVP
UVLO
C32
OVP
OCP
C51
D51
VGH
12
CPD2 10
CPD1 11
C53 C52
CPP1 7
CPP2 8
HVCC
Positive
Charge Pump
C54
VDD
R91
3
CPPCTL
39
PG
FBCP1
UVLO
TSD
VREF
OSC
HVCC
HV LDO
VREF
VDD
REG
HVLDO
20
C33
21
FBLD1
REG5
HVLDO
15.2V
R31 C31
R32
REG5
32
C92
REG5
LV LDO
FBLD2
LVLDO
31
LVCTL
38
LVLDO
1.8V/1.5V/1.2V
C41
C81 R81
From Calibrator
VCOM
C71
COM
13
DRN
14
CTL
15
THR
16
Gate
Shading
INP
19
INN
18
HVCC
R73
17
VCOM
VDD
FB1
FB2
FBLD1
FBLD2
FBCP1
FBCP2
Timer
Latch
HVLDO
Power
On Reset
SDA
SCL
29
30
I2C
I/F
DAC Control
DACVREF
×4 ×4 ×4 ×4
HVCC
AMP1
AMP3
AMP0
AMP2
24 25 26 27
OUT0
OUT1
OUT3
OUT2
C901
C903
C900
C902
1.5V
REF
FBCP2
Negative
Charge Pump
VCC
DACVREF
VGL_S
5
CPN
6
C62
D61
VGL
-6V
SCP
23
C93
C61
28
GND
9
CPGND
22
DACGND
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
3/38
TSZ02201-0313AAZ00670-1-2
17.Feb.2016 Rev.001







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