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Satellite tv, digital satellite receivers, satellite descrambler,DVB and other satellite equipment service manual and repair information

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File name 1940is.pdf

Final Electrical Specifications LT1940 Dual Monolithic 1.4A, 1.1MHz Step-Down Switching Regulator August 2002 DESCRIPTIO The LT1940 is a dual current mode PWM step-down DC/DC converter with internal 2A power switches. Both converters are synchronized to a single 1.1MHz oscillator and run with opposite phases, reducing input ripple current. The output voltages are set with external resistor dividers, and each regulator has independent shutdown and soft-start circuits. Each regulator generates a powergood signal when its output is in regulation, easing power supply sequencing and interfacing with microcontrollers and DSPs. The LT1940's 1.1MHz switching frequency allows the use of tiny inductors and capacitors, resulting in a very small dual 1.4A output solution. Constant frequency and ceramic capacitors combine to produce low, predictable output ripple voltage. With its wide input range of 3.6V to 25V, the LT1940 regulates a wide variety of power sources, from 4-cell batteries and 5V logic rails to unregulated wall transformers, lead acid batteries and distributed-power supplies. A current mode PWM architecture provides fast transient response with simple compensation components and cycle-by-cycle current limiting. Frequency foldback and thermal shutdown provide additional protection. FEATURES s s s s s s s s Wide Input Voltage Range: 3.6V to 25V Two 1.4A Output Switching Regulators with Internal Power Switches Small 16-Lead TSSOP Surface Mount Package Constant 1.1MHz Switching Frequency Anti-Phase Switching Reduces Ripple Independent Shutdown/Soft-Start Pins Independent Power Good Indicators Ease Supply Sequencing Uses Small Inductors and Ceramic Capacitors APPLICATIO S s s s s s s Disk Drives DSP Power Supplies Wall Transformer Regulation Distributed Power Regulation DSL Modems Cable Modems , LTC and LT are registered trademarks of Linear Technology Corporation. TYPICAL APPLICATIO VIN 7V TO 25V 4.7F CMDSH-3 BOOST1 0.1F OUT1 3.3V 1.4A 3.3H SW1 UPS140 16.5k FB1 VC1 10.0k 10F 15k 330pF 1nF RUN/SS1 RUN/SS2 GND FB2 VC2 PG1 PG2 SW2 VIN BOOST2 Efficiency vs Load Current CMDSH-3 100 OUT2 5V 1.4A VIN = 12V LT1940 0.1F 4.7H UPS140 30.1k 90 EFFICIENCY (%) VOUT = 5V 80 15k 10.0k 10F 70 330pF 100k 60 1940 F01 POWER GOOD 0 Figure 1. 3.3V and 5V Dual Output Step-Down Converter with Output Sequencing Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights. U U U VOUT = 3.3V 0.5 1.0 LOAD CURRENT (A) 1.5 1940 F01b sn1940 1940is 1 LT1940 ABSOLUTE (Note 1) AXI U RATI GS PACKAGE/ORDER I FOR ATIO TOP VIEW BOOST1 SW1 VIN VIN VIN VIN SW2 BOOST2 1 2 3 4 5 6 7 8 16 FB1 15 VC1 14 PG1 13 RUN/SS1 12 RUN/SS2 11 PG2 10 VC2 9 FB2 VIN Voltage ...
File name A.pdf

1 2 3 4 5 6 U5-E 46 55 IDDQ VSSA 58 68 +3.3V CPU0 VSSA 59 72 CPU1 VSSA 14 75 VSS VSSA L3 28 85 VSS VSSA PB2012-121 34 86 VSS VSSO 43 89 D VSS VSSO D +3V3B 52 90 VSS VSSO C64 C33 C32 C31 C30 54 93 VSS VSSM 63 77 VSS VSSM 104 104 104 104 104 94
File name AX88796LF.pdf

AX88796 L 3-in-1 Local Bus Fast Ethernet Controller 10/100BASE 3-in-1 Local CPU Bus Fast Ethernet Controller with Embedded SRAM Document No.: AX796-17 / V1.7 / Jan. 25 '02 Features Highly integrated with embedded 10/100Mbps MAC, PHY and Transceiver Embedded 8K * 16 bit SRAM Compliant with IEEE 802.3/802.3u 100BASE-TX/FX specification NE2000 register level compatible instruction Single chip local CPU bus 10/100Mbps Fast Ethernet MAC Controller Support both 8 bit and 16 bit local CPU interfaces include MCS-51 series, 80186 series and MC68K series CPU Support both 10Mbps and 100Mbps data rate Support both full-duplex or half-duplex operation Provides an extra MII port for supporting other media. For example, Home LAN application Support EEPROM interface to store MAC address External and internal loop-back capability Support Standard Print Port for printer server application Support upto 3/1 General Purpose In/Out pins 128-pin LQFP low profile package Low Power Consumption, typical under 100mA 0.25 Micron low power CMOS process. 25MHz Operation, Pure 3.3V operation with 5V I/O tolerance. *IEEE is a registered trademark of the Institute of Electrical and Electronic Engineers, Inc. *All other trademarks and registered trademark are the property of their respective holders. Product description The AX88796 Fast Ethernet Controller is a high performance and highly integrated local CPU bus Ethernet Controller with embedded 10/100Mbps PHY/Transceiver and 8K*16 bit SRAM. The AX88796 supports both 8 bit and 16 bit local CPU interfaces include MCS-51 series, 80186 series, MC68K series CPU and ISA bus. The AX88796 implements both 10Mbps and 100Mbps Ethernet function based on IEEE802.3 / IEEE802.3u LAN standard. The AX88796 also provides an extra IEEE802.3u compliant media-independent interface (MII) to support other media applications. Using MII interface, Home LAN PHY type media can be supported. As well as, the chip also provides optional Standard Print Port ( parallel port interface ), can be used for printer server device or treat as simple general I/O port. The chip also support upto 3/1 additional General Purpose In/Out pins System Block Diagram AD BUS Optional Print Port Or General I/O Ports Addr L Optional Home LAN PHY AX88796 With 10/100 Mbps PHY/TxRx RJ45 LATCH RJ11 This data sheet contains new products information. ASIX ELECTRONICS reserves the rights to modify product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product. ASIX ELECTRONICS CORPORATION 2F, NO.13, Industry East Rd. II, Science-based Industrial Park, Hsin-Chu City, Taiwan, R.O.C. TEL: 886-3-579-9500 FAX: 886-3-579-9558 8051 CPU Addr H Ctl BUS Always contact ASIX for possible updates before starting a design. First Released Date : July/31/2000 http://www.asix.com.tw AX88796 L 3-in-1 Local Bus Fast Ethernet Controller CONTENTS 1.0 INTRODUCTI
File name B.pdf

1 2 3 4 5 6 +3.3V U30 C300 54 52 46 41 28 12 6 38 21 58 35 38 36 19 29 30 17 31 16 61 15 79 60 33 34 R300 000 C301 40 36 20 19 39 23 24 25 26 29 30 31 32 33 34 22 35 +3.3V +3.3V +3.3V +3.3V +3.3V +3.3V +3.3V MEN1-CKE MEN1-CLK MEN1-CDQM MEN1-WE MEN1-BA1 MEN1-CAS NC MEN1-RAS A12 MEN1-ADDQ0 MEN1-BA0 MEN1-ADDQ1 MEN1-CS MEN1-ADDQ2 MEN1-CDQN MEN1-ADDQ3 MEN1-ADDR0 MEN1-ADDQ4 MEN1-ADDR1 MEN1-ADDQ5 MEN1-ADDR2 MEN1-ADDQ6 MEN1-ADDR3 MEN1-ADDQ7 MEN1-ADDR4 MEN1-ADDQ8 MEN1-ADDR5 MEN1-ADDQ9 MEN1-ADDR6 MEN1-ADDQ10 MEN1-ADDR7 MEN1-ADDQ11 MEN1-ADDR8 MEN1-ADDQ12 MEN1-ADDR9 MEN1-ADDQ13 MEN1-ADDR10 MEN1-ADDQ14 MEN1-ADDR11 MEN1-ADDQ15 HY57V561620CT-H GND GND GND GND GND GND GND 1 3 9 14 27 43 49 37 15 16 17 18 2 4 5 7 8 10 11 13 42 44 45 47 48 50 51 53 +3.3V U31 1 3 9 14 27 43 49 37 15 16 17 18 2 4 5 7 8 10 11 13 42 44 45 47 48 50 51 53 +3.3V GND +3.3V GND +3.3V GND +3.3V GND +3.3V GND +3.3V GND +3.3V GND CKE NC LDQM A12 MEM-WE BA1 CAS MEM-CLK RAS ADDQ0 ADDQ1 BA0 ADDQ2 CS ADDQ3 UDQM ADDQ4 ADDR-0 ADDQ5 ADDR-1 ADDQ6 ADDR-2 ADDQ7 ADDR-3 ADDQ8 ADDR-4 ADDQ9 ADDR-5 ADDQ10 ADDR-6 ADDQ11 ADDR-7 ADDQ12 ADDR-8 ADDQ13 ADDR-9 ADDQ14 ADDR-10 ADDQ15 ADDR-11 HY57V281620HCT-H 54 52 46 41 28 12 6 40R303 000 36 21 38 20 19 39 23 24 25 26 29 30 31 32 33 34 22 35 D R305 102 R306 102 U15-A 11 56 57 37 2 4 5 7 8 10 11 13 42 44 45 47 48 50 51 53 MEN1-CDQM MEN1-WE MEN1-CAS MEN1-RAS MEN1-ADDQ0 MEN1-ADDQ1 MEN1-ADDQ2 MEN1-ADDQ3 MEN1-ADDQ4 MEN1-ADDQ5 MEN1-ADDQ6 MEN1-ADDQ7 MEN1-ADDQ8 MEN1-ADDQ9 MEN1-ADDQ10 MEN1-ADDQ11 MEN1-ADDQ12 MEN1-ADDQ13 MEN1-ADDQ14 MEN1-ADDQ15 IBM-A LDQM MEM-WE CAS RAS ADDQ0 ADDQ1 ADDQ3 ADDQ4 ADDQ5 ADDQ6 ADDQ7 ADDQ8 ADDQ9 ADDQ10 ADDQ11 ADDQ12 ADDQ13 ADDQ14 ADDQ15 ADDQ15 277 301 271 278 297 298 250 268 281 269 280 282 296 283 284 265 254 285 287 262 D U15-C 9 R307 100 273 R302 272 270 R304 100 275 300 302 184 180 182 224 228 225 227 226 274 246 276 304 A12 C MEN1BA0 MEN1-CS MEN1-CDQN MEN1-ADDR0 MEN1-ADDR1 MEN1-ADDR2 MEN1-ADDR3 MEN1-ADDR4 MEN1-ADDR5 MEN1-ADDR6 MEN1-ADDR7 MEN1-ADDR8 MEN1-ADDR9 MEN1-ADDR10 MEN1-ADDR11 IBM-C BA0 CS UDQM ADDR-0 ADDR-1 ADDR-2 ADDR-3 ADDR-4 ADDR-5 ADDR-6 ADDR-7 ADDR-8 ADDR-9 ADDR-10 ADDR-11 IBM-B C +2.5V +3.3V L200 PB2012-121 +1.8V 238 128 120 112 84 236 78 255 251 249 82 253 240 80 U15-75 J61 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 75 20 70 288 68 28 101 R118 76801% R119 76801% LNB POW CTRL 13/18V CTRL 94 93 146 149 C715 C120 C203 C122 102 104 102 141 U15-H 117 1.8V 1.8V 1.8V 1.8V 1.8V 1.8V 1.8V 1.8V 1.8V 1.8V 1.8V 1.8V 1.8V 1.8V 75 20 70 288 68 28 101 141 AC5 D18 94 93 146 149 IBM-H 118 122 C121 117 102 116 118 122 146 106 109 99 139 125 C307 104 C123 102 C206 33uF/16V C246 C200 C201 C202 C204 C205 103 104 104 104 104 105 +1.8V L202 +1.8V L201 PB2012-121 +3.3V C214 104 C207 104 PB2012-121 +1.8V C209 33uF/16V C208 105 C220 103 C221 C222 C223 C225 C226 C253 C255 C257 C258 C238 C259 C242 C243 103 103 103 103 103 104 104 104 104 103 104 103 103 B C308 104 C309 104 C310 104 C311 104 +3.3V B +3.3v R600 R601 R602 R6
File name C.pdf

1 2 3 4 C413 C412 +5V R401 104 104 104 D R410 D U15-75 000 C407 101 R407 IC40-11 104 C408 R403 102 223 16 15 14 13
File name D.pdf

1 2 3 4 5 6 U22 R201 C212 C239 C240 C241 U21 C211 C210 +3.3V R200 LM1117 12401% D LM1117 104 103 103 103 D 12401% 47uF/50V 104 +3.3V Vin Vout +1.8V C124 +3.3V Vin Vout +2.5V 101 L203 Adj IR1 Adj PB2012-121 3 U15-243 C213 R206
File name E.pdf

1 2 3 4 5 6 +3.3V +3.3V L104 PB2012-121 C600 U10 WM8761ED R120 J63 105 1 14 000 U15-26 LRCIN MCLK U15-22 5 4 2 13 5 4 U15-156 Q62 D U15-27 DIN FORMAT 6 3 D 3 12 6 3 U15-21 BCKIN DEEMPH 7 2 BC817
File name F.pdf

1 2 3 4 5 6 C719 LNB 13/18V 102 D70 1N4007 DO-41 J1 +3.3V +3.3V 1 32 D R704 D 2 31 U15-62 C720 C705 C704 3 220 R612 R611 U15-63 U15-94
File name LM1117 1.8.pdf

LM1117 800mA Low-Dropout Linear Regulator February 2000 LM1117 800mA Low-Dropout Linear Regulator General Description The LM1117 is a series of low dropout voltage regulators with a dropout of 1.2V at 800mA of load current. It has the same pin-out as National Semiconductor's industry standard LM317. The LM1117 is available in an adjustable version, which can set the output voltage from 1.25V to 13.8V with only two external resistors. In addition, it is also available in five fixed voltages, 1.8V, 2.5V, 2.85V, 3.3V, and 5V. The LM1117 offers current limiting and thermal shutdown. Its circuit includes a zener trimmed bandgap reference to assure output voltage accuracy to within 1%. The LM1117 series is available in SOT-223, TO-220, and TO-252 D-PAK packages. A minimum of 10F tantalum capacitor is required at the output to improve the transient response and stability. Features n Available in 1.8V, 2.5V, 2.85V, 3.3V, 5V, and Adjustable Versions n Space Saving SOT-223 Package n Current Limiting and Thermal Protection n Output Current 800mA n Temperature Range 0C to 125C n Line Regulation 0.2% (Max) n Load Regulation 0.4% (Max) Applications n n n n n 2.85V Model for SCSI-2 Active Termination Post Regulator for Switching DC/DC Converter High Efficiency Linear Regulators Battery Charger Battery Powered Instrumentation Typical Application Active Terminator for SCSI-2 Bus DS100919-5 Fixed Output Regulator DS100919-28 2000 National Semiconductor Corporation DS100919 www.national.com LM1117 Ordering Information Package 3-lead SOT-223 Temperature Range 0C to +125C LM1117MPX-ADJ LM1117MPX-1.8 * LM1117MPX-2.5 LM1117MPX-2.85 LM1117MPX-3.3 LM1117MPX-5.0 3-lead TO-220 LM1117T-ADJ LM1117T-2.85 LM1117T-3.3 LM1117T-5.0 3-lead TO-252 LM1117DTX-ADJ LM1117DTX-1.8 * LM1117DTX-2.5 LM1117DTX-2.85 LM1117DTX-3.3 LM1117DTX-5.0 Note: * Contact factory for availability. Packaging Marking N03A N12A N13A N04A N05A N06A LM1117T-ADJ LM1117T-2.85 LM1117T-3.3 LM1117T-5.0 LM1117DT-ADJ LM1117DT-1.8 LM1117DT-2.5 LM1117DT-2.85 LM1117DT-3.3 LM1117DT-5.0 Transport Media Tape and Reel Tape and Reel Tape and Reel Tape and Reel Tape and Reel Tape and Reel Rails Rails Rails Rails Tape and Reel Tape and Reel Tape and Reel Tape and Reel Tape and Reel Tape and Reel NSC Drawing MA04A T03B TD03B Block Diagram DS100919-1 www.national.com 2 LM1117 Connection Diagrams SOT-223 DS100919-4 Top View TO-220 DS100919-2 Top View TO-252 DS100919-38 Top View 3 www.national.com LM1117 Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Maximum Input Voltage (VIN to GND) LM1117-ADJ, LM1117-1.8, LM1117-2.5, LM1117-3.3, LM1117-5.0 Power Dissipation (Note 2) Junction Temperature (TJ) (Note 2) Storage Temperature Range Lead Temperature TO-220 (T) Package SOT-223 (IMP) Package ESD Tolerance (Note 3) 260C, 10 sec 260C, 4 sec 2000V
File name LT1930f.pdf

FEATURES s s s s s s s s s s s LT1930/LT1930A 1A, 1.2MHz/2.2MHz, Step-Up DC/DC Converters in ThinSOT DESCRIPTIO The LT1930 and LT1930A are the industry's highest power SOT-23 switching regulators. Both include an internal 1A, 36V switch allowing high current outputs to be generated in a small footprint. The LT1930 switches at 1.2MHz, allowing the use of tiny, low cost and low height capacitors and inductors. The faster LT1930A switches at 2.2MHz, enabling further reductions in inductor size. Complete regulator solutions approaching one tenth of a square inch in area are achievable with these devices. Multiple output power supplies can now use a separate regulator for each output voltage, replacing cumbersome quasi-regulated approaches using a single regulator and custom transformers. A constant frequency internally compensated current mode PWM architecture results in low, predictable output noise that is easy to filter. Low ESR ceramic capacitors can be used at the output, further reducing noise to the millivolt level. The high voltage switch on the LT1930/LT1930A is rated at 36V, making the device ideal for boost converters up to 34V as well as for single-ended primary inductance converter (SEPIC) and flyback designs. The LT1930 can generate 5V at up to 480mA from a 3.3V supply or 5V at 300mA from four alkaline cells in a SEPIC design. The LT1930/LT1930A are available in the 5-lead ThinSOT package. 1.2MHz Switching Frequency (LT1930) 2.2MHz Switching Frequency (LT1930A) Low VCESAT Switch: 400mV at 1A High Output Voltage: Up to 34V 5V at 480mA from 3.3V Input (LT1930) 12V at 250mA from 5V Input (LT1930A) Wide Input Range: 2.6V to 16V Uses Small Surface Mount Components Low Shutdown Current: < 1A Low Profile (1mm) ThinSOTTM Package Pin-for-Pin Compatible with the LT1613 APPLICATIO S s s s s s s s s s TFT-LCD Bias Supply Digital Cameras Cordless Phones Battery Backup Medical Diagnostic Equipment Local 5V or 12V Supply External Modems PC Cards xDSL Power Supply , LTC and LT are registered trademarks of Linear Technology Corporation ThinSOT is a trademark of Linear Technology Corporation. TYPICAL APPLICATIO VIN 5V C1 2.2F SHDN 4 L1 10H 5 VIN LT1930 SHDN GND 2 FB 3 1 SW D1 90 VOUT 12V 300mA 85 VIN = 3.3V 80 R1 113k EFFICIENCY (%) C3* 10pF C2 4.7F 75 70 65 60 R2 13.3k C1: TAIYO-YUDEN X5R LMK212BJ225MG C2: TAIYO-YUDEN X5R EMK316BJ475ML D1: ON SEMICONDUCTOR MBR0520 L1: SUMIDA CR43-100 *OPTIONAL 1930/A F01 55 50 0 200 100 300 LOAD CURRENT (mA) 400 1930 TA01 Figure 1. 5V to 12V, 300mA Step-Up DC/DC Converter U U U Efficiency VIN = 5V 1 LT1930/LT1930A ABSOLUTE (Note 1) AXI U RATI GS PACKAGE/ORDER I FOR ATIO TOP VIEW SW 1 GND 2 FB 3 4 SHDN 5 VIN VIN Voltage ... 16V SW Voltage ... 0.4V to 36V FB Voltage ... 2.5V Current Into FB Pin ...



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