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L70S+,L70S+(Lift Stand)/L72S, L72S(Lift Stand)
TFT LCD Color Monitor
TECHNICAL SERVICE MANUAL
L70S+/L70S+(Lift Stand),L72S,L72S(Lift Stand) Technical Service Manual
Safety Precaution
WARNING
Service should not be attempted by anyone unfamiliar with the necessary precautions on this
monitor.
The followings are the necessary precautions to be observed before servicing.
1. When managing this monitor , cover with shield plate to avoid to scrach on LCD surface.
2. When replacing a chassis in the cabinet, always be certain that all the protective devices are
put back in place, such as nonmetallic control knobs, insulating covers, shields, isolation
resistor capacitor network etc.
3. Before returning the monitor to the customer, always perform an AC leakage current check
on the exposed metallic parts of the cabinet, such as signal connectors, terminals, screw
heads, metal overlays, control shafts etc, to be sure the monitor is safe to operate without
danger of electrical shock.
General Information
1. Description
This 17" LCD color display monitor is operated in R, G, B drive mode input.
2. Operating instructions
2-1. Front
Power Switch , Menu, Select, Down, Up, DPMS (Power) LED
2-2. Rear
Input connector (AC & Signal Cable)
2-3. OSD Controls
H/V Position, Clock Phase, Brightness, Contrast, Recall, Color Control, Language, Auto
Adjust, Miscellaneous, Audio control, Auto Color
3. Electrical Characteristic
3-1. Power Supply
AC/DC - Input Voltage : 90V~264V
Input Current : 1.0 A Max
Input Ferquency : 50 ~ 60Hz
- Output Voltage 12V/5V
Output Current 2A/1.5A
3-2. Video Input Signal
Level : 0.7 Vp-p analog signal(at 75 ohm termination to ground)
Polarity : Positive
3-3. Horizontal Synchronization Signal
Level : TTL High : 2.4V min
Low : 0.4V max
Polarity : - or +
Frequency : 31kHz ~ 80kHz
3-4. Vertical Synchronization Signal
Level : TTL High : 2.4V min
Low : 0.4V max
Polarity : - or +
Frequency : 56Hz ~ 75Hz
--1--
Control Description
Front View
Power Switch / LED Indicator
Support Modes
H Frequency V Frequency H V Dot Clock
NO Resolution (Hz)
(kHz) Polarity Polarity (MHz)
1 720 x 400 31.5 70.1 0 1 28.322
2 640 x 480 31.5 59.9 0 0 25.175
3 640 x 480 37.5 75.0 0 0 31.500
4 800 x 600 37.9 60.3 1 1 40.000
5 800 x 600 46.9 75.0 1 1 49.500
6 1024 x 768 48.4 60.0 0 0 65.000
7 1024 x 768 56.5 70.1 0 0 75.000
8 1024 x 768 60.0 75.0 1 1 78.750
9 1280 x 1024 63.900 60.000 1 1 108.00
10 1280 x 1024 79.976 75.025 1 1 135.00
--2--
L70S+/L70S+(Lift Stand),L72S,L72S(Lift Stand) Technical Service Manual
Video Input Signal
Recommended signal are shown below
·Video Signal
Video level : 0 to 700mV
Polarity : positive
Video Input : RGB separated
Analog level
Sync input : H-Sync(TTL level)
V-Sync (TTL level)
·Waveform
Video input(R.G.B)
255
700mV
254
253 · Signal: 256 level gray
scale
252
· Linear stepping:
251
(2.73mV ~ 256 Steps)
4
3
2
1
0 0mV
· H-Sync · V-Sync
ACTIVE (T4) ACTIVE (T4)
Front Porch Period (T1) Front Porch Period (T1)
(T5) (T5)
Back Porch (T3) Back Porch (T3)
Sync Width (T2) Sync Width (T2)
--3--
Video Input Terminal
A 15 Pin D-sub connector is used as the input signal connector
Pin and input signals are shown in the table below.
Pin Description
SIGNAL SEPARATE SYNC/
PIN NO. DDC 1/2B
1 RED
2 GREEN
3 BLUE
4 GND
5 RETURN
6 RED GROUND
7 GREEN GROUND
8 BLUE GROUND
9 N.C
10 LOGIC GROUND
11 GROUND
12 SDA
13 H-SYNC(TTL)
14 V-SYNC(VCLK)
15 SCL
D-Sub miniature connector
--4--
L70S+/L70S+(Lift Stand),L72S,L72S(Lift Stand) Technical Service Manual
Connecting with External Equipment
Cautions
Be sure to turn off the power of your computer before connecting the monitor.
LINE OUT
--5--
Theory of Operation
1. AC/DC INVERTER
Input voltage : DC 12V
Input current : 2.0A(Max)
Output current : 6.5mArms(TYP)
Frequency(switching) : 47KHz(Max)
Output power : 18W(TYP)
On/off control voltage : 5.0V
2. AC/DC ADATOR
This display device shall maintain the specified per formances in the range de scribed
below
Frequency : 50/60Hz
Voltage : 90 - 264Vac RMS
The following consumption requirments shall be met:
Power Consumption : 35W(typ)
Current consumption : < 1.0 Aac RMS
Output Specification:
output1 : 12V/2A
output2 : 5V/1.5A
3. Audio System
This monitor has a audio system including two micro loudspeakers.
Each of two micro loudspeakers has a 2W(Max) output power.
This system also supports a headphone(earphone) output.
- Auto Signal Input : < 600mVp-p(Max.)
- Auto Amplifiers
2W+2W Amplifier with DC Volume Control (for two micro loudspeakers)
RL=8 @THD=10% Vcc=14V (min. 10V, max. 18V)
Dual-Audio Power Amplifier (for a headphone output)
RL=32 @THD=10% Vcc=4.5V (min. 1.8V, max. 15V)
- Speaker
Micro Loudspeaker Spec.
Normal impedance 8 15% at 1.0V 1.5KHz
Resonance Freq. 550Hz +/- 110Hz at 1.0V
Freq. Range fo ~ 20KHz
Power Rating Normal 1.0W/Peak 2.0W
4. DPMS MODE
Signal Power Recovery LED
Status
H-Sync V-Sync Video Consumption Time Indicator
on Pulse Pulse Active 35W(typ) - Green
No No Within 3
off Blank 1W (TYP) 230V AC Orange
Pulse Pulse Sec
--6--
L70S+/L70S+(Lift Stand),L72S,L72S(Lift Stand) Technical Service Manual
On Screen Controls & LED Indicator
The menu for screen setting adjustment is located in the OSD and can be viewed in one of
five languages OSD feature andmain funcrions are as follows:
1280x1024
H:63.9 V:60.0
V:60.0
BRIGHTNESS
he OSD adjustments available to you are listed below.
BRIGHTNESS
Adjust the brightness of the screen.
CONTRAST
Adjust the contrast of the screen.
COLOR CONTROL
Color temperature affects the tint of the image. With lower color
temperatures the image turns reddish and with higher temperatures
bluish.
There are three color settings available: Bluish, Reddish or USER. With
the USER setting you can set individual values for red, green and blue.
POSITION
H POSITION
Adjusts the horizontal position of the entire screen image.
V POSITION
Adjusts the vertical position of the entire screen image.
--7--
CLOCK PHASE
PHASE
Adjust the noise of the screen image.
CLOCK
Adjust the horizontal size of the entire screen image.
MISCELLANEOUS
RECALL
Recall the saved color data.
OSD TIMER
You can set the displayed time of OSD Menu window on the screen by using this
adjustment.
OSD POSITION
Adjust the OSD menu's horizontal or vertical position on the screen.
AUTO COLOR
Optimum color setting is auto programmed for user's convenience.
LANGUAGE
You can select the language in which adjustment menus are displayed.
The following languages are available : English, French, German, Italian,
Spanish, Swedish, Finnish, Danish, Portuguese, Dutch and Japanese or chinese.
AUDIO
VOLUME
Adjust the audio volume level.
AUDIO
This menu is used to choose audio on or off.
AUTO ADJUST
You can adjust the shape of screen automatically at the full screen pattern.
--8--
L70S+/L70S+(Lift Stand),L72S,L72S(Lift Stand) Technical Service Manual
Getting Fine Picture
Step 1. At first Display, a full screen, such as, Window's background or "H" character should
be achieved by using Editor (ex: Notepad. exe)
Step 2. Adjust the screen to the center of the Display(LCD), by using the top and bottom
display controls. (i.e.Using V-Position Adjust menu)
Step 3. Adjust the screen to the center of the Display(LCD), by using the right and left
display controls. (i.e.Using Clock and H-Position adjust menu)
Step 4. Adjust the Clock-phase until the "H" Character displays clear.
Step 5. Using the Contrast. Brightness, and Color Control menu, set the color to your
preference.
Step 6. When you finish the adjustment, you can save your settings by pressing on the menu
until the OSD screen has disappeared.
Factory Setting & EEPROM Initialization Method
Factory Setting Method
- Connect the signal cable and power cable to the LCD monitor.
- Press Power switch with pressed MENU key.(Menu key + Power key).
- Then, a User can change the factory setting value in OSD menu.
- Save changed value and Turn off the power s/w.
- Turn on the power, adjust the screen.
--9--
Specification
SIZE 17" Viewable diagonal
Dot Pitch 0.264mm
LCD Module
Brightness 300 cd/m2 (TYP)
Response Time 12m-sec (Typ)/8m-sec (Typ)
Signal R.G.B Analog
Input
Connector 15 pin D-SUB Connector
H-Freq 31.0kHz ~ 80.0kHz
SYNC
V-Freq 56.0Hz ~ 75Hz
Area 337.92(H)X270.336(V)mm
Display
Color 16.2M Colors
Resolution 1280 X 1024 @ 75Hz
Video Bandwidth 135MHz
Contrast,Brightness, Position, Auto Color,
User Control
& Clock Phase, Color Control, Language,
OSD Control
Auto Adjust, Miscellaneous, Audio Control
Power Management VESA DPMS Standard
Plug & Play VESA DDC 1/2B
EMC FCC CLASS B , CE , VCCI
Safety &
Safety cULus, CE, TUV-GS, SEMKO
Regulation
Ergonomi TCO'03
Operating 5 to 35 °C
Temperature
Storage - 5 to 45 °C
Operating 30 to 80%(Non-condensing)
Humidity
Storage 5 to 90%(Non-condensing)
unpacked 3.8Kg
Weight
packed 5.0Kg
Dimension(WXHXD mm) 372.5 X 398 X 185 mm
* Specification is subject to change without notice for performance improvement.
--10--
L70S+/L70S+(Lift Stand),L72S,L72S(Lift Stand) Technical Service Manual
17" Model Key Part List
Model L70S+ L70S+(Lift Stand) L72S L72S(Lift Stand)
-SAMSUNG SAMSUNG
LCD LTM170EU-L11 LTM170EU-L11 SAMSUNG SAMSUNG
-Boehydis -Boehydis
HT17E13-100 HT17E13-100
Module LTM170EU-L21 LTM170EU-L21
-Haunstar -Haunstar
HSD170ME13-A4 HSD170ME13-A4
Stand TILT LIFT PIVOT TILT LIFT PIVOT
Ass'y STAND STAND STAND STAND
U1 MST7111A MST7111A TSU16AL-LF TSU16AL-LF
U5 RC1117-2.5 RC1117-2.5 RC1117-1.8 RC1117-1.8
--11--
Critcal Parts Specification
1. LCD Module
LTM170EU-L11, HT17E13-100, HSD170ME13-A4, LTM170EU-L21 is
a A-SI TFT active martix color liquid crystal compising amorphous
silicon TFT attached to each signal elecrode, a driving circuit and a
backlight. a built-in backlight display area contains 1280x1024
pixels and can display full color (16.2M/16.7M colors)
Model L70S+/L70S+(Lift Stand) L72S, L72S(Lift Stand)
Display area 337.92(H)X20.336(V)mm 337.92(H)X20.336(V)mm
Drive system A-Si TFT A-Si TFT
Display color 16.2M Colors 16.2M Colors
Number of Pixel 1280x1024 1280x1024
Pixel arrangement RGB vertical strip RGB vertical strip
Pixel pitch 0.264(H)X0.264(V)mm 0.264(H)X0.264(V)mm
Weight 2.1Kg 2.1Kg
Conerast ratio 500:1 500:1
View angle Horizontal 75 degree, 75 degree 75 degree, 75 degree
Verticel 75 degree, 60 degree 85 degree, 60 degree
Response time 12ms(max) 8ms(max)
Luminance 300cd/m(typ) 300cd/m(typ)
Signal system Digital RGB signals, Sync Digital RGB signals, Sync
signals(H, V-Sync) signals(H, V-Sync)
Supply voltage 5.0V(Typ) 5.0V(Typ)
Backlight Edge light Four colt cathode flurescrnt Four colt cathode flurescrnt
type lamps With in-verter lamps With in-verter
Power consumption 2.8W(Typ) without B/L 2.8W(Typ) without B/L
LCD Type/Vendor LTM170EU-L11(SAMSUNG) LTM170EU-L21(SAMSUNG)
HT17E13-100(BoeHydis)
HSD170ME13-A4(haunstar)
--12--
L70S+/L70S+(Lift Stand),L72S/L72S(Lift Stand) Technical Service Manual
2) CONNECTIONS
Physical interface is described as for the connector on module.
These connectors are capable of accommodating the following signals and will be following
components
Connector Name / Designation Interface Connector / Interface card
Manufacturer JAE or compatible
Type Parts Number FI-X30S-HF
Mating Housing Part Number FI-X30S-H
Connector Name / Designation Lamp Connector / Backlight lamp
Manufacturer JST
Type Parts Number BHR-04VS-1
Mating Type Part Number SM04(4.0)B-BHS-1-TB
3) Signal Pin
Pin# Signal Name Pin# Signal Name
1 Rxo0- 2 Rxo0+
3 Rxo1- 4 Rxo1+
5 Rxo2- 6 Rxo2+
7 GND 8 RxoC-
9 RxoC+ 10 Rxo3-
11 Rxo3+ 12 RxE0-
13 RxEo+ 14 GND
15 RxE1- 16 RxE1+
17 GND 18 RxE2-
19 RxE2+ 20 RxEC-
21 RxEC+ 22 RxE3-
23 RxE3+ 24 GND
25 NC 26 NC
27 NC 28 Power
29 Power 30 Power
--13--
4) Signal Description
The module using a pair of LVDS receiver SN75LVDS82 (Texas Instruments) or compatible.
LVDS is a differential signal technology for LCD interface and high speed data transfer
device. Transmitter shall be SN75LVDS83(negative edge sampling)or compatible. The first
LVDS port(RxOxxx)transmots odd pixels while the second LVDS port(RxExxxx)transmits
even pixels.
PIN # SIGNAL NAME DESCRIPTION
1 RxO0- Negative LVDS differential data input (odd data)
2 RxO0+ Positive LVDS differential data input (odd data)
3 RxO1- Negative LVDS differential data input (odd data)
4 RxO1+ Positive LVDS differential data input (odd data)
5 RxO2- Negative LVDS differential data input (odd data, H-Sync, V-Sync,DSPTMG)
6 RxO2+ Positive LVDS differential data input (odd data, H-Sync, V-Sync,DSPTMG)
7 GND Power Ground
8 RxOC- Negative LVDS differential clock input (odd clock)
9 RxOC+ Positive LVDS differential clock input (odd clock)
10 RxO3- Negative LVDS differential data input (odd data)
11 RxO3+ Positive LVDS differential data input (odd data)
12 RxE0- Negative LVDS differential data input (Even clock)
13 RxE0+ Positive LVDS differential data input (Even data)
14 GND Power Ground
15 RxE1- Positive LVDS differential data input (Even data)
16 RxE1+ Negative LVDS differential data input (Even data)
17 GND Power Ground
18 RxE2- Negative LVDS differential data input (Even data)
19 RxE2+ Positive LVDS differential data input (Even data)
20 RxEC- Negative LVDS differential clock input (Even clock)
21 RxEC+ Positive LVDS differential clock input (Even clock)
22 RxE3- Negative LVDS differential data input (Even data)
23 RxE3+ Positive LVDS differential data input (Even data)
24 GND Power Ground
25 NC -
26 NC -
27 NC -
28 POWER Power
29 POWER Power
30 POWER Power
Note : Input signals of odd and even clock shall be the same timing.
LVDS DATA Name DESCRIPTION
DSP Display Timing : When the signal is high, the pixel data shall be valid to be displayed
V-S Vertical Sync : Both Positive and Negative polarity are acceptable
H-S Horizontal Sync : Both Positive and Negative polarity are acceptable
--14--
L70S+/L70S+(Lift Stand),L72S,L72S(Lift Stand) Technical Service Manual
MST7111A
--15--
--16--
L70S+/L70S+(Lift Stand),L72S,L72S(Lift Stand) Technical Service Manual
--17--
24LC08
A0 1 8 VCC A0 1 8 VCC
A1 2 24C08 7 WP A1 2 24C08 7 WP
or or
A2 3 24LC08 6 SCL A2 3 24LC08 6 SCL
VSS 4 5 SDA VSS 4 5 SDA
Dual-In-Line SO package
package (M8)
A0 1 8 VCC
A1 2 24C08 7 WP
or
A2 3 24LC08 6 SCL
VSS 4 5 SDA
TSSOP
Pin Name
A0, A1 N.C.
A2 Device Address inputs
Vss Ground
SDA Data I/O
SCL Clock input
WP Write Protect
Vcc + 5 V or + 3 V
3.0 ABSOLUTE MAXIMUM RATINGS
Storage Temperature................................-65°C to + 125°C
Voltage with Respect to Ground.................-0.3 to + 6.5 V
NOTE: These are STRESS rating only. Appropriate conditions for operating these devices given elsewhere
may permanently damage the part. Prolonged exposure to maximum ratings may affect device reliability.
4.0 OPERATING CONDITIONS
Temperature under bias: MTV24C08/24LC08.......0°C to + 70°C
MTV24C08/24LC08-I.....-40°C to + 85°C
--18--
L70S+/L70S+(Lift Stand),L72S,L72S(Lift Stand) Technical Service Manual
5.0 ELECTRICAL CHARACTERISTICS
DC ELECTRICAL CHARACTERISTICS
(Vcc =5V +/- 10% ,MTV24C08/24LC08° F cc =3V +/- 10% ,24LC08)
V
MTV24C08/
24LC08
Symbol Parameter Conditions 24LC08 Units
Min Max Min Max
SCL = 100KHZ
ICC1 Operating Current
CMOS Input Levels
-- 10 -- 8 mA
(Program)
Operating Current SCL = 100KHZ
ICC2 (Read) CMOS Input Levels
-- 2 -- 2 mA
ISB Standby Current SCL = SDA = 0 V -- 10 -- 10 µA
IIL Input Leakage VIN = 0 V to VCC -1 +1 -1 +1 µA
IOL Output Leakage VOUT = 0 V to Vcc -1 +1 -1 +1 µA
VIL Input Low Voltage -0.1 0.8 -0.1 0.15 VCC V
VIH Input High Voltage 2 VCC +0.2 0.8VCC VCC+0.2 V
VOL1 Output Low Voltage IOL = 2.1mA TTL -- 0.4 -- 0.4 V
VOH1 Output High Voltage IOH = -400uA TTL 2.4 -- 2.4 -- V
VOL2 Output Low Voltage IOL = 10uA CMOS -- 0.2 -- 0.2 V
VOH2 Output High Voltage IOH = -10uA CMOS VCC-0.2 -- VCC-0.2 -- V
Programming Command
VLK VCC Lockout Voltage
Can Be Executed
Default -- Default -- V
6.0 SWITCHING CHACTERISTICS (Under Operating Conditions )
AC ELECTRICAL CHARACTERISTICS
(Vcc =5V +/- 10% , MTV24C08° F cc =3V +/- 10% ,24LC08)
V
(Vcc =5V +/- 10% , MTV24C08 Fast Mode)
MTV24C08/ MTV24C08
Parameter Symbol 24LC08 (Fast Mode) Units
Min Max Min Max
Clock frequency Fscl 0 100 -- 400 kHz
Clock high time Thigh 4000 -- 600 -- ns
Clock low time Tlow 4700 -- 1200 -- ns
SDA and SCL rise time Tr -- 1000 -- 300 ns
SDA and SCL fall time Tf -- 300 -- 300 ns
START condition hold time Thd:Sta 4000 -- 600 -- ns
START condition setup time Tsu:Sta 4700 -- 600 -- ns
Data input hold time Thd:Dat 0 -- 0 -- ns
Data input setup time Tsu:Dat 250 -- 100 -- ns
STOP condition setup time Tsu:Sto 4000 -- 600 -- ns
Output valid from clock Taa 300 3500 100 900 ns
Bus free time Tbuf 4700 -- 1200 -- ns
Data out hold time Tdh 300 -- 50 -- ns
Input filter spike suppression Tsp -- 100 -- 50 ns
(SDA and SCL pins)
Write cycle time Twr -- 10 -- 10 ms
--19--
CAPACITANCE TA= 25 , f=250KHZ
C
Symbol Parameter Max Units
CO Output capacitance 5 pF
UT
CIN Input capacitance 5 pF
A.C. Conditions of Test
Input Pulse Levels Vcc x 0.1 to Vcc x 0.9
Input Rise and Fall times 10 ns
Input and Output Timming level Vcc x 0.5
Output Load 1 TTL Gate and CL = 100pf
--20--
L70S+/L70S+(Lift Stand),L72S,L72S(Lift Stand) Technical Service Manual
RC1117
RC1117X2.5
1A Adjustable/Fixed Low Dropout Linear Regulator
Features Description
· Low dropout voltage The RC1117 and RC1117-2.5, -2.85, -3.3 and -5 are low
· Load regulation: 0.05% typical dropout three-terminal regulators with 1A output current
· Trimmed current limit capability. These devices have been optimized for low voltage
· On-chip thermal limiting where transient response and minimum input voltage are
· Standard SOT-223, TO-263, and TO-252 packages critical. The 2.85V version is designed specifically to be
· Three-terminal adjustable or fixed 2.5V, 2.85V, 3.3V, 5V used in Active Terminators for SCSI bus.
Applications Current limit is trimmed to ensure specified output current
and controlled short-circuit current. On-chip thermal limiting
· Active SCSI terminators provides protection against any combination of overload and
· High efficiency linear regulators ambient temperatures that would create excessive junction
· Post regulators for switching supplies temperatures.
· Battery chargers
· 5V to 3.3V linear regulators Unlike PNP type regulators where up to 10% of the output
· Motherboard clock supplies current is wasted as quiescent current, the quiescent current
of the RC1117 flows into the load, increasing efficiency.
The RC1117 series regulators are available in the industry-
standard SOT-223, TO-263 (D2PAK), and TO-252 (DPAK)
power packages.
Typical Applications
RC1117
VIN = 3.3V + VIN VOUT 1.5V at 1A
+
10 F 2 2 F
R1
ADJ 124
R2
24.9
VOUT = VREF(1 + R2/R1) + IAdj · R2
RC1117-2.85
VIN = 5V VIN V 2.85V at 1A
+ + OUT
10 F 22 F
GND
--21--
Pin Assignments
Tab is
VOUT
Tab is
Front View VOUT
3 IN
Tab is
VOUT 2 OUT
1 ADJ/GND
1 2 3 1 2 3
4-Lead Plastic SOT-223
JC = 15 C/W*
ADJ/ IN
GND ADJ/ OUT IN
GND
3-Lead Plastic TO-252
3-Lead Plastic TO-263
JC = 3 C/W*
JC = 3 C/W*
*With package soldered to 0.5 square inch copper area over backside ground plane or internal power plane., JA can vary from
30°C/W to more than 50°C/W. Other mounting techniques may provide better thermal resistance than 30°C/W.
Absolute Maximum Ratings
Parameter Min. Max. Unit
VIN 7.5 V
Operating Junction Temperature Range 0 125 C
Storage Temperature Range -65 150 C
Lead Temperature (Soldering, 10 sec.) 300 C
--22--
L70S+/L70S+(Lift Stand),L72S,L72S(Lift Stand) Technical Service Manual
Electrical Characteristics
Operating Conditions: VIN 7V, TJ = 25°C unless otherwise specified.
The denotes specifications which apply over the specified operating temperature range.
Parameter Conditions Min. Typ. Max. Units
Reference Voltage, VREF3 1.5V (VIN - VOUT) 5.75V, 1.225 1.250 1.275 V
10mA IOUT 1A (-2%) (+2%)
Output Voltage 10mA IOUT 1A
RC1117-2.5, 4V VIN 7V 2.450 2.5 2.550 V
RC1117-2.85, 4.35V VIN 7V 2.793 2.85 2.907 V
RC1117-3.3, 4.8V VIN 7V 3.234 3.3 3.366 V
RC1117-5, 6.5V VIN 7V 4.900 5.0 5.100 V
Line Regulation1,2 (VOUT + 1.5V) VIN 7V, IOUT = 10mA 0.005 0.2 %
Load Regulation1,2 (VIN VOUT) = 2V, 10mA IOUT 1A 0.05 0.5 %
Dropout Voltage VREF = 1%, IOUT = 1A 1.100 1.200 V
Current Limit (VIN VOUT) = 2V 1.1 1.5 A
Adjust Pin Current, IAdj3 35 120 A
Adjust Pin Current Change3 1.5V (VIN VOUT) 5.75, 0.2 5 A
10mA IOUT 1A
Minimum Load Current 1.5V (VIN VOUT) 5.75 10 mA
Quiescent Current VIN = VOUT + 1.25V 4 13 mA
Ripple Rejection f = 120Hz, COUT = 22 F Tantalum, 60 72 dB
(VIN VOUT) = 3V, IOUT = 1A
Thermal Regulation TA = 25 C, 30ms pulse 0.004 0.02 %/W
Temperature Stability 0.5 %
Long-Term Stability TA = 125 C, 1000hrs. 0.03 1.0 %
RMS Output Noise TA = 25 C, 10Hz f 10kHz 0.003 %
(% of VOUT)
Thermal Resistance, Junction SOT-223 15 C/W
to Case TO-252, TO-263 3 C/W
Thermal Shutdown Junction Temperature 155 C
Thermal Shutdown 10 C
Hysteresis
Notes:
1. See thermal regulation specifications for changes in output voltage due to heating effects. Load and line regulation are
measured at a constant junction temperature by low duty cycle pulse testing.
2. Line and load regulation are guaranteed up to the maximum power dissipation (18W). Power dissipation is determined by
input/output differential and the output current. Guaranteed maximum output power will not be available over the full input/
output voltage range.
3. RC1117 only.
--23--
RC1117-3.3
1A Adjustable/Fixed Low Dropout Linear Regulator
Features Description
· Low dropout voltage The RC1117 and RC1117-2.5, -2.85, -3.3 and -5 are low
· Load regulation: 0.05% typical dropout three-terminal regulators with 1A output current
· Trimmed current limit capability. These devices have been optimized for low voltage
· On-chip thermal limiting where transient response and minimum input voltage are
· Standard SOT-223, TO-263, and TO-252 packages critical. The 2.85V version is designed specifically to be
· Three-terminal adjustable or fixed 2.5V, 2.85V, 3.3V, 5V used in Active Terminators for SCSI bus.
Applications Current limit is trimmed to ensure specified output current
and controlled short-circuit current. On-chip thermal limiting
· Active SCSI terminators provides protection against any combination of overload and
· High efficiency linear regulators ambient temperatures that would create excessive junction
· Post regulators for switching supplies temperatures.
· Battery chargers
· 5V to 3.3V linear regulators Unlike PNP type regulators where up to 10% of the output
· Motherboard clock supplies current is wasted as quiescent current, the quiescent current
of the RC1117 flows into the load, increasing efficiency.
The RC1117 series regulators are available in the industry-
standard SOT-223, TO-263 (D2PAK), and TO-252 (DPAK)
power packages.
Typical Applications
RC1117
VIN = 3.3V + VIN VOUT 1.5V at 1A
+
10 F 2 2 F
R1
ADJ 124
R2
24.9
VOUT = VREF(1 + R2/R1) + IAdj · R2
RC1117-2.85
VIN = 5V + VIN V
+ OUT 2.85V at 1A
10 F 22 F
GND
--24--
L70S+/L70S+(Lift Stand),L72S,L72S(Lift Stand) Technical Service Manual
Pin Assignments
Tab is
VOUT
Tab is
Front View VOUT
3 IN
Tab is
VOUT 2 OUT
1 ADJ/GND
1 2 3 1 2 3
4-Lead Plastic SOT-223
JC = 15 C/W*
ADJ/ IN
GND ADJ/ OUT IN
GND
3-Lead Plastic TO-252
3-Lead Plastic TO-263
JC = 3 C/W*
JC = 3 C/W*
*With package soldered to 0.5 square inch copper area over backside ground plane or internal power plane., JA can vary from
30°C/W to more than 50°C/W. Other mounting techniques may provide better thermal resistance than 30°C/W.
Absolute Maximum Ratings
Parameter Min. Max. Unit
VIN 7.5 V
Operating Junction Temperature Range 0 125 C
Storage Temperature Range -65 150 C
Lead Temperature (Soldering, 10 sec.) 300 C
--25--
Electrical Characteristics
Operating Conditions: VIN 7V, TJ = 25°C unless otherwise specified.
The denotes specifications which apply over the specified operating temperature range.
Parameter Conditions Min. Typ. Max. Units
Reference Voltage, VREF3 1.5V (VIN - VOUT) 5.75V, 1.225 1.250 1.275 V
10mA IOUT 1A (-2%) (+2%)
Output Voltage 10mA IOUT 1A
RC1117-2.5, 4V VIN 7V 2.450 2.5 2.550 V
RC1117-2.85, 4.35V VIN 7V 2.793 2.85 2.907 V
RC1117-3.3, 4.8V VIN 7V 3.234 3.3 3.366 V
RC1117-5, 6.5V VIN 7V 4.900 5.0 5.100 V
Line Regulation1,2 (VOUT + 1.5V) VIN 7V, IOUT = 10mA 0.005 0.2 %
Load Regulation1,2 (VIN VOUT) = 2V, 10mA IOUT 1A 0.05 0.5 %
Dropout Voltage VREF = 1%, IOUT = 1A 1.100 1.200 V
Current Limit (VIN VOUT) = 2V 1.1 1.5 A
Adjust Pin Current, IAdj3 35 120 A
Adjust Pin Current Change3 1.5V (VIN VOUT) 5.75, 0.2 5 A
10mA IOUT 1A
Minimum Load Current 1.5V (VIN VOUT) 5.75 10 mA
Quiescent Current VIN = VOUT + 1.25V 4 13 mA
Ripple Rejection f = 120Hz, COUT = 22 F Tantalum, 60 72 dB
(VIN VOUT) = 3V, IOUT = 1A
Thermal Regulation TA = 25 C, 30ms pulse 0.004 0.02 %/W
Temperature Stability 0.5 %
Long-Term Stability TA = 125 C, 1000hrs. 0.03 1.0 %
RMS Output Noise TA = 25 C, 10Hz f 10kHz 0.003 %
(% of VOUT)
Thermal Resistance, Junction SOT-223 15 C/W
to Case TO-252, TO-263 3 C/W
Thermal Shutdown Junction Temperature 155 C
Thermal Shutdown 10 C
Hysteresis
Notes:
1. See thermal regulation specifications for changes in output voltage due to heating effects. Load and line regulation are
measured at a constant junction temperature by low duty cycle pulse testing.
2. Line and load regulation are guaranteed up to the maximum power dissipation (18W). Power dissipation is determined by
input/output differential and the output current. Guaranteed maximum output power will not be available over the full input/
output voltage range.
3. RC1117 only.
--26--
L70S+/L70S+(Lift Stand),L72S,L72S(Lift Stand) Technical Service Manual
SI4435
PD- 93768A
Si4435DY
HEXFETÆ Power MOSFET
- Ultra Low On-Resistance A
1
- P-Channel MOSFET S
8
D
- Surface Mount 2 7
VDSS = -30V
S D
- Available in Tape & Reel 3 6
S D
G
4 5
D RDS(on) = 0.020
T o p V ie w
Description
These P-channel HEXFETÆ Power MOSFETs from
International Rectifier utilize advanced processing
techniques to achieve the extremely low on-resistance per
silicon area. This benefit provides the designer with an
extremely efficient device for use in battery and load
management applications..
The SO-8 has been modified through a customized
leadframe for enhanced thermal characteristics and
multiple-die capability making it ideal in a variety of power
applications. With these improvements, multiple devices
can be used in an application with dramatically reduced
board space. The package is designed for vapor phase, SO-8
infrared, or wave soldering techniques.
Absolute Maximum Ratings
Parameter Max. Units
VDS Drain- Source Voltage -30 V
ID @ TA = 25C Continuous Drain Current, VGS @ -10V -8.0
ID @ TA= 70C Continuous Drain Current, VGS @ -10V -6.4 A
IDM Pulsed Drain Current Å -50
PD @T A = 25C Power Dissipation 2.5
W
PD @T A = 70C Power Dissipation 1.6
Linear Derating Factor 0.02 W/oC
VGS Gate-to-Source Voltage ± 20 V
TJ, TSTG Junction and Storage Temperature Range -55 to + 150 oC
Thermal Resistance
Parameter Max. Units
o
RJA Maximum Junction-to-AmbientÉ 50 C/W
--27--
Si4435DY
Electrical Characteristics @ TJ = 25C (unless otherwise specified)
Parameter Min. Typ. Max. Units Conditions
V(BR)DSS Drain-to-Source Breakdown Voltage -30 ñññ ñññ V V GS = 0V, ID = -250µA
V(BR)DSS/TJ Breakdown Voltage Temp. Coefficient ñññ -0.019 ñññ V/C Reference to 25C, D = -1mA
I
ñññ 0.015 0.020 VGS = -10V, ID = -8.0A Ç
RDS(on) Static Drain-to-Source On-Resistance
ñññ 0.026 0.035 VGS = -4.5V, ID = -5.0A Ç
VGS(th) Gate Threshold Voltage -1.0 ñññ ñññ V VDS = VGS, ID = -250µA
gfs Forward Transconductance ñññ 11 ñññ S VDS = -15V, ID = -8.0A
ñññ ñññ -10 VDS = -24V, VGS = 0V
IDSS Drain-to-Source Leakage Current µA
ñññ ñññ -10 VDS = -15V, VGS = 0V, TJ = 70C
Gate-to-Source Forward Leakage ñññ ñññ -100 VGS = -20V
IGSS nA
Gate-to-Source Reverse Leakage ñññ ñññ 100 VGS = 20V
Qg Total Gate Charge ñññ 40 60 ID = -4.6A
Qgs Gate-to-Source Charge ñññ 7.1 ñññ nC VDS = -15V
Qgd Gate-to-Drain ("Miller") Charge ñññ 8.0 ñññ VGS = -10V Ç
td(on) Turn-On Delay Time ñññ 16 24 VDD = -15V, VGS = -10V Ç
tr Rise Time ñññ 76 110 ID = -1.0A
ns
td(off) Turn-Off Delay Time ñññ 130 200 RG = 6.0
tf Fall Time ñññ 90 140 R D = 15
Ciss Input Capacitance ñññ 2320 ñññ VGS = 0V
Coss Output Capacitance ñññ 390 ñññ pF VDS = -15V
Crss Reverse Transfer Capacitance ñññ 270 ñññ É = 1.0kHz
Source-Drain Ratings and Characteristics
Parameter Min. Typ. Max. Units Conditions
IS Continuous Source Current MOSFET symbol D
ñññ ñññ -2.5
(Body Diode) showing the
A
ISM Pulsed Source Current integral reverse G
ñññ ñññ -50
(Body Diode) Å p-n junction diode. S
VSD Diode Forward Voltage ñññ ñññ -1.2 V TJ = 25C, S = -2.5A, VGS = 0V Ç
I
trr Reverse Recovery Time ñññ 34 51 ns TJ = 25C, F = -2.5A
I
Qrr Reverse Recovery Charge ñññ 33 50 nC di/dt = -100A/µs Ç
Notes:
Å Repetitive rating; pulse width limited by É Surface mounted on FR-4 board, t 5sec.
max. junction temperature.
Ç Pulse width 300µs; duty cycle 2%.
--28--
L70S+/L70S+(Lift Stand),L72S,L72S(Lift Stand) Technical Service Manual
TDA7496L
2W+2W AMPLIFIER WITH DC VOLUME CONTROL
2W+2W OUTPUT POWER
RL = 8 @THD = 10% VCC = 14V
ST-BY AND MUTE FUNCTIONS
LOW TURN-ON TURN-OFF POP NOISE
LINEAR VOLUME CONTROL DC COUPLED
WITH POWER OP. AMP.
NO BOUCHEROT CELL
NO ST-BY RC INPUT NETWORK
SINGLE SUPPLY RANGING UP TO 15V
SHORT CIRCUIT PROTECTION
THERMAL OVERLOAD PROTECTION
INTERNALLY FIXED GAIN Powerdip (14+3+3)
SOFT CLIPPING ORDERING NUMBER: TDA7496L
VARIABLE OUTPUT AFTER VOLUME CON-
TROL CIRCUIT
POWERDIP (14+3+3) PACKAGE
14+3+3 package, specially designed for high
DESCRIPTION quality sound, TV and Monitor applications.
The TDA7496L is a stereo 2W+2W class AB Features of the TDA7496L include linear volume
power amplifier assembled in the @ Powerdip control, Stand-by and mute functions.
BLOCK DIAGRAM
VAROUT_R VS
7 15,16
GND 1,2,3,13,
18,19,20 VOLUME
9 1000µF
INR + 14
470nF 30K - OUTR
OP AMP
S1 ST-BY
+5V
11 STBY
MUTE/STBY S_GND
10K
PROTECTIONS
12 MUTE
60K 1µF +5V
VOLUME S2 MUTE
4
INL + 17 OUTL
470nF 30K -
1000µF
OP AMP
SVR 10
470µF 6 5
VOLUME VAROUT_L
+5V
D97AU596A
300K
100nF
--29--
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
VS DC Supply Voltage 26 V
VIN Maximum Input Voltage 8 Vpp
Ptot Total Power Dissipation (Tcase = 60C) 6 W
Tamb Ambient Operating Temperature 0 to 70 C
Tstg, Tj Storage and Junction Temperature -40 to 150 C
V6 Volume CTRL DC voltage 7 V
PIN CONNECTION Rth with "on board" Square Heatsink vs. cop-
per area.
Rthj-a D97AU675
GND 1 20 GND (C/W) COPPER AREA 35µ
THICKNESS
GND 2 19 GND
GND 3 18 GND
60
INL 4 17 OUTL
VAROUT_L 5 16 VS
PC BOARD
VOLUME 6 15 VS 50
VAROUT_R 7 14 OUTR
N.C. 8 13 GND
40
INR 9 12 MUTE
SVR 10 11 STBY
D97AU597A 30
0 4 8 12 Area(cm2)
THERMAL DATA
Symbol Parameter Value Unit
Rth j-pins Thermal Resistance Junction-pins max. 15 C/W
Rth j-amb (*) Thermal Resistance Junction-ambient max. 50 C/W
(*) Mounted on PCB with no heatsink
ELECTRICAL CHARACTERISTICS (Refer to the test circuit VS = 14V; RL = 8, Rg = 50, Tamb = 25C).
Symbol Parameter Test Condition Min. Typ. Max. Unit
VS Supply Voltage Range 10 18 V
Iq