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PDF BD8143MUV Data sheet ( Hoja de datos )
| Número de pieza | BD8143MUV | |
| Descripción | High-precision Gamma Correction IC | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Power Supply IC Series for TFT LCD Panels
High-precision
Gamma Correction IC with built-in DAC
BD8143MUV
No.09035EBT08
●Description
This gamma correction voltage generation IC feature built-in DACs and provide a 1chip solution with setting control via serial
communications, a high-precision 10-bitDAC, and Buffer Amp (12ch).
●Features
1) 1chip design means fewer components
2) Built-in 10bit DAC
3) DAC output Buffer AMP (12ch)
4) Amp input select (CTL)
5) 3-line serial interface control
6) Thermal shut down
7) Power ON Reset Circuit
8) VQFN032V5050 Package
●Applications
These ICs can be used with TFT LCD Panels used by Large-Screen and High-Definition LCD TVs.
●Absolute maximum ratings (Ta=25℃)
Parameter
Symbol
Limit
Power Supply Voltage 1
DVCC
7
Power Supply Voltage 2
VCC
20
REFIN Voltage
Amplifier Drive Current
REF
Io
20
30 *1
Junction Temperature
Power Dissipation
Tjmax
Pd
150
2440 *2
Operating Temperature Range
Topr -40～+105
Storage Temperature Range
Tstg -55～+150
*1 Pd, should not be exceeded.
*2 Reduced by 19.52mW/°C over 25°C, when mounted on a glass epoxy board.
(4-layer 74.2×74.2×1.6mm).
Unit
V
V
V
mA
℃
mW
℃
℃
●Operating Condition (Ta=-40℃～105℃)
Parameter
Power Supply Voltage 1
Power Supply Voltage 2
REFIN Voltage
AMP0 Drive Current
AMP1～10 Drive Current
AMP11 Drive Current
Serial CLK Frequency
OSC Frequency
Symbol
DVCC
VCC
REF
IOA
IOB
IOC
fCLK
FOSC
Limit
MIN MAX
2.3 5.5
8 18
8 18
-40 -
-20 20
- 40
-5
- 200
Unit
V
V
V
mA
mA
mA
MHz
kHz
www.rohm.com
© 2009 ROHM Co., Ltd. All rights reserved.
1/10
2009.07 - Rev.B
1 page  
BD8143MUV
Technical Note
●Serial Communication
The serial data control block is composed of Shift-Register, DAC Register and DAC circuit.
The DAC register memorizes data from the serial interface (LATCH, CLK and SDIN).
The DAC circuit makes control voltage from the register output and it outputs to the each block. The DAC register value turns
back the preset value when Power Supply starts up.
Then, beginning 1bit of SDIN is always 0, because it is for test. Next 1bit switches OSC mode.
If input 0, OSC mode is internal mode (the frequency is 100kHz). If input 1, it is external one that require external clock.
LATCH
CLK
SDIN
CLOCK
CONTROL
SERIAL DATA CONTROL BLOCK
Shift Register
OUT0～12
Register
DAC
10bit
5bit 1bit 1bit
ADDRESS OSC TEST
DECORDE MODE MODE
Fig.2 SERIAL BLOCK
①TIMING OF SERIAL COMMUNICATION
The 17 bits Serial data from SDIN terminal is loaded to Shift-Register at the rise edge of CLK, and these data is loaded to
DAC Register at the rise edge of LATCH.
If serial data period is less than 17 bits while LATCH state is LOW, the serial data is not memorized. If serial data period is
more than 17 bits while LATCH state is LOW, last 17 bits are effective.
LATCH
TIMING OF SERIAL COMMUNICATION
CLK
SDIN
d0 d1 d2 d3 d4 d5 d6 d7 d8 d9 d10 d11 d12 d13 d14 d15 d16
Fig.3 TIMING OF SERIAL COMMUNICATION
②SERIAL DATA
The composition of SERIAL DATA INPUT(SDIN)
First →
→ Last
d0 d1 d2 d3 d4 d5 d6 d7 d8 d9 d10 d11 d12 d13 d14 d15 d16
0X
Resister Address
DATA
REGISTER NAME d2
ADDRESS
d3 d4 d5
d6
FUNCTION
PRESET VALUE
d7～d16
Register 0
0 0 0 0 0 OUT0 Voltage of control
00
0000
0000
Register 1
0 0 0 0 1 OUT1 Voltage of control
00
0000
0000
Register 2
0 0 0 1 0 OUT2 Voltage of control
00
0000
0000
Register 3
0 0 0 1 1 OUT3 Voltage of control
00
0000
0000
Register 4
0 0 1 0 0 OUT4 Voltage of control
00
0000
0000
Register 5
0 0 1 0 1 OUT5 Voltage of control
00
0000
0000
Register 6
0 0 1 1 0 OUT6 Voltage of control
00
0000
0000
Register 7
0 0 1 1 1 OUT7 Voltage of control
00
0000
0000
Register 8
0 1 0 0 0 OUT8 Voltage of control
00
0000
0000
Register 9
0 1 0 0 1 OUT9 Voltage of control
00
0000
0000
Register 10
0 1 0 1 0 OUT10 Voltage of control
00
0000
0000
Register 11
0 1 0 1 1 OUT11 Voltage of control
00
0000
0000
Register 12(*)
01100
-
00
(*)IF Register 12 is loaded at DATA=1010100000(2A0h), each output comply with each register regardless of CTL signal.
0000
0000
www.rohm.com
© 2009 ROHM Co., Ltd. All rights reserved.
5/10
2009.07 - Rev.B
5 Page 
Notice
Notes
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 of introducing ROHM's products (hereinafter
"Products"). If you wish to use any such Product, please be sure to refer to the specifications,
which can be obtained from ROHM upon request.
Examples of application circuits, circuit constants and any other information contained herein
illustrate the standard usage and operations of the Products. The peripheral conditions must
be taken into account when designing circuits for mass production.
Great care was taken in ensuring the accuracy of the information specified in this document.
However, should you incur any damage arising from any inaccuracy or misprint of such
information, ROHM shall bear no responsibility for such damage.
The technical information specified herein is intended only to show the typical functions of and
examples of application circuits for the Products. ROHM does not grant you, explicitly or
implicitly, any license to use or exercise intellectual property or other rights held by ROHM and
other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the
use of such technical information.
The Products specified in this document are intended to be used with general-use electronic
equipment or devices (such as audio visual equipment, office-automation equipment, commu-
nication devices, electronic appliances and amusement devices).
The Products specified in this document are not designed to be radiation tolerant.
While ROHM always makes efforts to enhance the quality and reliability of its Products, a
Product may fail or malfunction for a variety of reasons.
Please be sure to implement in your equipment using the Products safety measures to guard
against the possibility of physical injury, fire or any other damage caused in the event of the
failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM
shall bear no responsibility whatsoever for your use of any Product outside of the prescribed
scope or not in accordance with the instruction manual.
The Products are not designed or manufactured to be used with any equipment, device or
system which requires an extremely high level of reliability the failure or malfunction of which
may result in a direct threat to human life or create a risk of human injury (such as a medical
instrument, transportation equipment, aerospace machinery, nuclear-reactor controller,
fuel-controller or other safety device). ROHM shall bear no responsibility in any way for use of
any of the Products for the above special purposes. If a Product is intended to be used for any
such special purpose, please contact a ROHM sales representative before purchasing.
If you intend to export or ship overseas any Product or technology specified herein that may
be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to
obtain a license or permit under the Law.
Thank you for your accessing to ROHM product informations.
More detail product informations and catalogs are available, please contact us.
ROHM Customer Support System
http://www.rohm.com/contact/
www.rohm.com
© 2009 ROHM Co., Ltd. All rights reserved.
R0039A
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