Sharp LC-40LE361E Service Manual ▷ View online
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BST2
19
I
Bootstrap capacitor for Buck 2. Fit a 47-nF ceramic capacitor from this pin to the switching node.
EN2
20
I
Enable pin for Buck2. A low level signal on this pin disables it. If pin is left open a weak internal
pull-up to V3V will allow for automatic enable. For delayed start-up add a small capacitor from this
pin to ground.
RLIM2
21
I
Current limit setting for Buck2. Fit a resistor from this pin to ground to set the peak current limit on
the output inductor.
SS2
22
I
Soft start pin for Buck 2.Fit a small ceramic capacitor to this pin to set the converter soft start time.
COMP2
23
O
Compensation pin to Buck 2. Fit a series RC circuit to this pin to complete the compensation circuit
of this converter.
FB2
24
I
Feedback input for Buck 2. Connect a divider set to 0.8V from the output of the converter to ground
LOW_P
25
I
Low power operation mode(active high) input for TPS65251.
GND
26
Ground pin
PGOOD
27
O
Power good. Open drain output asserted after all converters are sequenced and within regulation.
Polarity is factory selectable ( active high default).
V7V
28
O
Internal supply. Connect a 10-
µF ceramic capacitor from this pin to ground.
V3V
29
O
Internal supply. Connect a 10-
µF ceramic capacitor from this pin to ground.
AGND
30
Analog ground. Connect all GND pins and the power pad together.
GND
31
Ground pin
VIN
32
I
Input supply
VIN
33
I
Input Supply
VIN
34
I
Input Supply
GND
35
Ground pin
LX3
36,37
O
Switching node for Buck 3
VIN3
38
Input supply for buck 3. Fit a 10-
µF ceramic capacitor close to this pin.
BST3
39
I
Bootstrap capacitor for buck 3.Fit a 47-
µF ceramic capacitor from this pin to the switching node.
EN3
40
I
Enable pin for Buck 3. A low level signal on this pin disables it. If pin is left open a weak internal
pull-up to V3V will alow for automatic enable. For a delayed start-up add a small ceramic
capacitor from this pin to ground.
PAD
Power pad. Connect to ground.
Table 6: Pin functions
APL5910
b. General Description
The APL5910 is a 1A ultra low dropout linear regulator. The IC needs two supply voltages, one is a
control voltage (VCNTL) for the control circuitry, the other is a main supply voltage (VIN) for power
conversion, to reduce power dissipation and provide extremely low dropout voltage. The APL5910
integrates many functions. A Power-On- Reset (POR) circuit monitors both supply voltages on VCNTL
and VIN pins to prevent erroneous operations. The functions of thermal shutdown and current-limit
protect the device against thermal and current over-loads. A POK indicates that the output voltage status
with a delay time set internally. It can control other converter for power sequence. The APL5910 can be
enabled by other power systems. Pulling and holding the EN voltage below 0.4V shuts off the output.
conversion, to reduce power dissipation and provide extremely low dropout voltage. The APL5910
integrates many functions. A Power-On- Reset (POR) circuit monitors both supply voltages on VCNTL
and VIN pins to prevent erroneous operations. The functions of thermal shutdown and current-limit
protect the device against thermal and current over-loads. A POK indicates that the output voltage status
with a delay time set internally. It can control other converter for power sequence. The APL5910 can be
enabled by other power systems. Pulling and holding the EN voltage below 0.4V shuts off the output.
The APL5910 is available in a SOP-8P package which features small size as SOP-8 and an Exposed
Pad to reduce the junction-to-case resistance to extend power range of applications.
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b. Features
Ultra Low Dropout -0.12V (Typical) at 1AOutput Current
0.8V Reference Voltage
High Output Accuracy
- -±1.5%over Line, Load, and Temperature Range
Fast Transient Response
Adjustable Output Voltage
Power-On-Reset Monitoring on Both VCNTL and VIN Pins
Internal Soft-Start
Current-Limit and ShortCurrent-Limit Protections
Thermal Shutdown with Hysteresis
Open-Drain VOUT Voltage Indicator (POK)
Low Shutdown Quiescent Current (< 30mA )
Shutdown/Enable Control Function
Simple SOP-8P Package with Exposed Pad
Lead Free and Green Devices Available (RoHS Compliant)
APPLICATIONS
Motherboards, VGA Cards
Notebook PCs
Add-in Cards
Figure 8: Pin configuration
Table 7: Recommended operating conditions
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Table 8: Pin description
4. MICROCONTROLLER (MSTAR MSD8WB9BX/BWK)
a. General Description
The MSD8WB9BX/MSD8WB9BWK is MStar’s most up-to-date system-on-chip flagship for flat panel
integrated digital television products. Building on the success of MStar’s current solutions, the
MSD8WB9BX/MSD8WB9BWK hosts the most advanced picture processing engine, MStarACE
integrated digital television products. Building on the success of MStar’s current solutions, the
MSD8WB9BX/MSD8WB9BWK hosts the most advanced picture processing engine, MStarACE
PRO
, for
all the Experts in various fields of TV video quality tuning to develop the state-of-the-art TV and DTV
system.
MStarACE
system.
MStarACE
PRO
, the Professional Edition of MStar color processor, includes all MStar’s successful color-
tuning tools and a newly added multi-dimensional color/sharpening/NR formula that can quickly reflect
subtle or sudden changes in even darker, brighter or mixture scenes. With this ultimate color processor, a
specially designed color remapping system for modern wider gamut displays and an easy-to-use
color-tool UI, developers can quickly and easily identify PQ characteristic from the most high-end panel
models to the most conventional panel models. The MSD8WB9BX/MSD8WB9BWK integrates
DTV/multi-media all-purpose AV decoder, DVB-T/DVBC demodulator(MSD8WB9BWK is including
also DVB-T2 demod), VIF demodulator and Sound/Video processor into a single device. This allows the
overall BOM to be reduced significantly making the MSD8WB9BX/MSD8WB9BWK a very cost
effective multi-media DTV solution. The MSD8WB9BX/MSD8WB9BWK enables feature rich
products that bring differentiation to the iDTV market. By the use of AV decoder capable of decoding a
plethora of high definition content with Ethernet, USB 2.0 connectivity and a powerful CPU/GPU, an
MSD8WB9BX/MSD8WB9BWK based system can provide a high quality networking application and
media-center experience. For standard users, the MSD8WB9BX/MSD8WB9BWK provides
multi-standard analog TV support with adaptive 3D video decoding and VBI data extraction. The build-in
audio decoder is capable of decoding FM, AM, NICAM, A2, BTSC and EIA-J sound standards. The
MSD8WB9BX/MSD8WB9BWK supplies all the necessary A/V inputs and outputs to complete a
receiver design including a multi-port HDMI receiver and component video ADC. All input selection
multiplexed for video and audio are integrated, including full SCART support with CVBS output. To
meet the increasingly popular energy legislative requirements without the use of additional hardware, the
MSD8WB9BX/MSD8WB9BWK has an ultra-low power standby mode during which an embedded MCU
can act upon standby events and wake up the system as required.
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MSD8WB98WK,a single chip iDTV solution that
supports channel decoding, and media -center
functionality enabled by a high performance AV
CODEC and CPU.
Key features includes:
1. DVB-T/C/T2 Front-end Demodulator.
2. A Multi-Standard A/V Format Decoder.
3. The Mace
2. A Multi-Standard A/V Format Decoder.
3. The Mace
PRO
Video
Processor.
4.
Home Theater Sound Processor.
5. Internet and Variety of Connectivity Support.
6. Dual-stream decoder for 3D contents.
7. Multi-Purpose CPU for OS and Multimedia.
8. Peripheral and Power Management.
6. Dual-stream decoder for 3D contents.
7. Multi-Purpose CPU for OS and Multimedia.
8. Peripheral and Power Management.
High Performance Micro-processor.
Ultra high speed /performance 32-bit RISC CPU.
Memory Management Unit for Linux support.
Three full duplez UARTs.
Supports USB and ISP programming.
DMA Engine.
Transport Stream De-multiplexer.
Supports two parallel TS interfaces, with or
without sync signal.
Supports TS input and output for external CI
module.
Maximum TS data rate is 16 MB/sec
32 general purpose PID filters and section filters
for each transport s stream de-multiplexer.
Supports additional audio/video PCR filters.
Supports TX DMA channel for time-shifting PVR.
Supports 3DES/DES and AES
encryption/decryption.
MPEG-2 Video Decoder
ISO/IEC 13818-2 MPEG-2 Video MP@HL.
Automatic frame rate conversion.
Supports resolution up to HDTV (1080i, 720p)
and SDTV.
MPEG-4 Video Decoder.
ISO/IEC 14496-2 MPEG-4 ASP video decoding
Supports resolutions up to HDTV
(1080@30fps).
Supports DIVX
1
Home Theater & HD profiles
Optional
& Plus HD
Optional
Supports VC-1
Optional
,FLV video format
decoding.
H.264 Decoder.
ITU-T H.264 ISO/IEC 14496-10 video decoding
(Min and high profile up to level 4.1), MVC
video decoding.
video decoding.
Supports Dual-stream decoding.
Support resolutions for all DVB,ATSC,HDTV,
DVD and VCD.
Supports resolution up to 1080@50fps.
Supports CABAC and CAVLC stream types.
Processing of ES and PES streams, extraction
and provision of time stamps.
Up to 40 Mbits bitrate (Blu-ray spec.)
AVS Decoder
Optional
.
Supports Jizhun profile, level 6.0.
Supports resolution up to 1920x1088 @30fps.
Supports bit-rate to 20Mbps.
Supports dual-stream decoding.
Real Media Decoder
Optional
.
Supports maximum resolution up to
1080p@30fps.
Supports RVB, RV9, RV10, RA8-LBR and
HE-AAC decoder.
Supports file formats with RM and RMVB.
Supports Picture Re-sampling.
Supports in-loop de-block for B-frame support.
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