TPS68000 (6,4 mm x 7,8 mm) www.ti.com SLVS524 – OCTOBER 2005 HIGHLY EFFICIENT PHASE SHIFT FULL BRIDGE CCFL CONTROLLER FEATURES • • • • • • • • • • DESCRIPTION 8-V to 30-V Input Voltage Range Full Bridge Topology With Integrated Gate Drives for 4 NMOS Switches Synchronizable Constant Frequency Operation Programmabe Phase Delays of Operating Frequency for Master-Slave Operation Lamp Voltage and Lamp Current Regulation Analog and Burst Dimming Configurable Distributed Burst Dimming in Multiple Controller Applications Programmable Voltage Regulation Timeout for Startup and Fault Conditions Open-Lamp and Short-Circuit Protection Internal Over-Temperature Protection Undervoltage Lockout 30-pin TSSOP Package The TPS68000 device provides a power supply controller solution for CCFL backlight applications in a large variety of applications. The wide input voltage range of 8 V to 30 V makes it suitable to be powered directly from regulated 12-V or 24-V rails, or any other source with output voltages in this range. When using a regulated 5-V rail, it also can be used in notebook computers or other portable battery-powered equipment having lower minimum supply voltages. The controller is capable of driving the gates of all 4 NMOS switches directly without the need for any additional circuitry, like dedicated gate drivers or gate-drive transformers. The wide input voltage range also makes it easy to design CCFL converters with higher input voltages like 120 V or 400 V coming from a power factor correction unit. The TPS68000 also supports CCFL converter circuits driving multi-lamp applications, either by using higher power-rated switches and transformers, or using several TPS68000s synchronized. When synchronized, they can be operated either at the same frequency and phase, or phase shifted to minimize RMS input current. Already implemented smart dimming features, such as support of distributed dimming, also help to optimize the performance of multi-controller applications. (Continued on next page) APPLICATIONS • • CCFL Backlight Power Supplies for Desktop Monitors and LCD TVs CCFL Backlight Power Supplies for Notebook Computers C10 TPS68000 Supply Voltage 8V .. 30V VCC C1 VLOGIC GA SA R2 Error Output Synchronization Synchronization Phase Shift Operating Frequency FAULT 0V Burst Duty Cycle (Burst Dimming Input) C5 GC SC EN STC GB GD ABR 2V 0V BBR C6 Burst Frequency Direct Burst Dimming Input (Frequency + Duty Cycle) BF QC 3 C12 C14 C4 T1 QB C2 V5 3.3 V 0V QA C V5C PH SET R1 Device Enable Lamp current (Analog Dimming Input) SYNC 2.0 V V5A OCP CSEN CAO QD C13 R3 R4 C8 CA− VSEN BC C7 VREF GND VAO C9 VA− PGND Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCT PREVIEW information concerns products in the formative or design phase of development. Characteristic data and other specifications are design goals. Texas Instruments reserves the right to change or discontinue these products without notice. Copyright © 2005, Texas Instruments Incorporated PRODUCT PREVIEW • • TPS68000 www.ti.com SLVS524 – OCTOBER 2005 These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. DESCRIPTION (CONTINUED) To start the lamp, an automatic strike control is implemented. It smoothly increases the lamp voltage by sweeping the operating frequency across the self resonance frequency of the transformer-series capacitor resonant circuit. During this time the maximum lamp voltage is limited and regulated by a voltage control loop until the lamp current increases to a value allowing the current control loop to take over control. The lamp current is regulated over a wide current range. To set the lamp brightness, analog and PWM dimming circuits are implemented. Analog and PWM dimming can be used independent of each other to control lamp brightness over a wide range. To protect the circuit during fault conditions, for example broken, disconnected, or shorted lamps, overvoltage protection and overcurrent protection circuits are implemented. To protect the TPS68000 from overheating, an internal temperature sensor is implemented that triggers controller turn-off at an excessive device temperature. The device is packaged in a 30-pin TSSOP package measuring 6,4 mm x 7,8 mm (DBT). ORDERING INFORMATION PRODUCT PREVIEW (1) TA PACKAGE PART NUMBER (1) –40°C to 85°C 30-Pin TSSOP TPS68000DBT The DBT package is available taped and reeled. Add R suffix to device type (e.g., TPS68000DBTR) to order quantities of 2000 devices per reel. ABSOLUTE MAXIMUM RATINGS over operating free-air temperature range (unless otherwise noted) (1) TPS68000 Input voltage range on VCC, EN, FAULT –0.3 V to 33 V Input voltage range on SYNC, SET, PH, STC, ABR, BBR, BF, BC, VREF, VA-, VAO, CA-, CAO –0.3 V to 6 V Input voltage range on VSEN, CSEN, OCP –6 V to 6 V Input voltage range on GD, GB, V5 –0.3 V to 6 V maximum differential voltage between GA, V5A and SA 6V maximum differential voltage between GC, V5C and SC 6V maximum differential voltage between SA and PGND 35V maximum differential voltage between SC and PGND 35V Operating virtual junction temperature range, TJ –40°C to 150°C Storage temperature range Tstg –65°C to 150°C (1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated uner "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. DISSIPATION RATINGS PACKAGE THERMAL RESISTANCE θJA POWER RATING TA≤ 25°C DERATING FACTOR ABOVE TA = 25°C POWER RATING TA≤ 70°C POWER RATING TA≤ 85°C DBT 63.9°C/W 1565 mW 16 mW/°C 860 mW/°C 626 mW/°C RECOMMENDED OPERATING CONDITIONS MIN NOM MAX UNIT VI Supply voltage at VCC 8.0 30 V TA Operating free air temperature range –40 85 °C TJ Operating virtual junction temperature range –40 125 °C 2 TPS68000 www.ti.com SLVS524 – OCTOBER 2005 ELECTRICAL CHARACTERISTICS over recommended free-air temperature range and over recommended input voltage range (typical at an ambient temperature range of 25°C) (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT 4.5 5 5.5 V 25 mA 4.1 4.3 V MAIN CONTROL V5 Internal control supply regulator IOUT-V5< 25 mA IOUT-V5 Control supply output current including internal current consumption VUVLO Under voltage lockout threshold at V5 Voltage at V5 decreasing VOL FAULT output low voltage IFAULT = 500 µA 0.2 0.4 V Vlkg FAULT output leakage current VFAULT= 5 V 0.1 1 µA VIL EN input low voltage 0.4 V VIH EN input high voltage 1.4 EN input current VCC = 24 V ISTC STC source current during strike ISTC STC source current during wait ISTC STC source and sink current normal operation, VSTC = 1.25 V V 0.05 0.1 µA 10 µA 5 µA 10 µA Overtemperature protection 140 °C Overtemperature hysteresis 20 °C Quiescent current into VCC VCC = 12V, V5 = 5.5V 25 40 µA Quiescent current into VCC VCC = V5 = 5V 25 40 µA Quiescent current into V5 VCC = V5 = 5V 1000 1500 µA Shutdown current into VCC VCC = V5 = 5V, EN = 0V 1 2 µA Shutdown current into V5 VCC = V5 = 5V, EN = 0V 1 2 µA Shutdown current into VCC VCC = 12V, EN = 0V 2.5 5 µA VREF Reference Voltage IOUT-VREF < 5mA 3.3 3.33 V IOUT-VREF Reference output current 3.27 5 PRODUCT PREVIEW 4.0 mA GATE DRIVE High side drive sink resistance ID = 0.05A High side drive source resistance ID = 0.05A High side drive rise time CG = 4.7 nF, SA = SC = 0 V, V5A = V5C = 5 V High side drive fall time CG = 4.7 nF 1.2 2.0 Ω 1.5 2.5 Ω 35 50 ns 15 25 ns Time delay between high side off and low side on CG = 4.7 nF 100 ns Time delay between low side off and high side on CG = 4.7 nF 100 ns 3 TPS68000 www.ti.com SLVS524 – OCTOBER 2005 ELECTRICAL CHARACTERISTICS (continued) over recommended free-air temperature range and over recommended input voltage range (typical at an ambient temperature range of 25°C) (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Low side drive sink resistance ID = 0.05A 1.2 2.0 Ω Low side drive source resistance ID = 0.05A 1.5 2.5 Ω Low side drive rise time CG = 4.7 nF, V5 = 5 V 35 50 ns Low side drive fall time CG = 4.7 nF 15 25 ns 30 100 kHz 0.5 x f 2xf MAIN OSCILLATOR PRODUCT PREVIEW f Oscillator frequency programming range fSYNC Frequency capture range for synchronization VIL SYNC low voltage VIH SYNC high voltage ISYNC SYNC input current VPH≤ V5 - 1.3 V ISYNC SYNC drive current VSYNC≥ 1.4 V, VPH = 5 V ISYNC SYNC sink current VSYNC≤ 0.4 V, VPH = 5 V VSET VPH 0.4 V 0.5 1.5 µA 1000 1250 1500 µA 1000 1250 1500 µA 1.4 V Minimum pulse width for synchronization 100 ns SET output voltage 1.25 V Resistor range for main frequency programming 280 Input voltage range for programming phase delay for main oscillator clock to synchronization frequency 0.1 140 Phase shift of the main VPH = 0.1 V .. 1.9 V oscillator clock 90 IPH PH input current 0.1 VPH Threshold for programming device as main oscillator frequency master VPH = 2.0 V V5– 1.3 V 80 kΩ 1.9 V ° / VPH 1 µA V5– 0.9 V V VOLTAGE AND CURRENT CONTROL RCSEN Current sense input impedance VCSEN = 3.3 V 35 kΩ RCSEN Current sense input impedance VCSEN = –3.3 V 25 kΩ RVSEN Voltage sense input impedance VVSEN = 3.3 V 25 kΩ RVSEN Voltage sense input impedance VVSEN = –3.3 V 30 kΩ ICAO, IVAO Voltage and current amplifier output source current VCAO, VVAO = 2.5 V 55 µA ICAO, IVAO Voltage and current amplifier output sink current VCAO, VVAO = 2.5 V 4 200 µA TPS68000 www.ti.com SLVS524 – OCTOBER 2005 ELECTRICAL CHARACTERISTICS (continued) over recommended free-air temperature range and over recommended input voltage range (typical at an ambient temperature range of 25°C) (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VREFVREG Virtual voltage regulator reference voltage 2.61 2.64 2.67 V VREFOVP Overvoltage comparator threshold 3.27 3.3 3.33 V VREFCREG Virtual current regulator reference voltage 3.27 3.3 3.33 V IOCP Overcurrent comparator input current VOCP = 3.3V 0.1 1 µA IOCP Overcurrent comparator input current VOCP = –3.3V 50 VREFOCP Overcurrent comparator threshold 3.27 µA 3.3 3.33 V 0.01 0.1 µA 3.3 V 1 µA 2 V IABR ABR input current VABR = 3.3 V VABR ABR input voltage range for lamp current programming BC = V5 IBBR BBR input current VBBR = 2.0 V VBBR BBR input voltage range for burst duty cycle programming 0 0.1 0 Burst duty cycle VBBR BBR input voltage threshold for selecting synchronized burst dimming IBF BF source current BF capacitor range to program internal burst frequency fBurst Internal burst frequency range fBC Frequency lock / capture range for synchronized burst dimming tr Burst current pulse rise time IBC BC input current VIL BC input low voltage VIH BC input high voltage V5– 0.9 V 10 (1kHz down to 10Hz) 0.0047 0.47 µF 10 1000 Hz 0.5 x fBurst 1.5 x fBurst VBC = 3.3V 0.1 1.4 VPH = 0 V .. 2 V, distributed dimming selected V µA 400 minimum pulse width at BC Phase shift of the dimming burst compared to BC clock %/ VBBR 50 V5– 1.3 V PRODUCT PREVIEW DIMMING µs 1 µA 0.4 V V 100 ns 180 ° / VPH 5 TPS68000 www.ti.com SLVS524 – OCTOBER 2005 PIN ASSIGNMENTS DBT PACKAGE (TOP VIEW) SYNC SET STC PH BBR BC BF ABR VAO VA− VSEN CA− CAO CSEN OCP 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 VREF GND SA GA V5A GB VCC V5 PGND GD V5C GC SC EN FAULT PRODUCT PREVIEW Terminal Functions TERMINAL NAME NO. I/O DESCRIPTION ABR 8 I Analog brightness programming input. A DC voltage applied at that pin programs the lamp current the current regulator regulates. 0 V means no current and 3.3 V means maximum current. BBR 5 I Burst brightness programming input. A DC voltage applied at that pin programs the duty cycle of the burst pulses generated to dimm the brightness. 0 V means zero duty cycle and 2 V means maximum duty cycle. Applying V5 (5 V) programs the device for synchronized burst dimming. BC 6 I Burst control. A PWM signal applied at that pin is directly used for burst dimming. Frequency and duty cycle are used directly. This input has priority against the burst frequency programming with BBR and BF BF 7 I Burst frequency programming. A capacitor at that pin programs the low frequency for the burst dimming CA- 12 I Current amplifier negative input. This input is used to connect the compensation capacitor for compensating the current loop. CAO 13 O Current amplifier output. This is the output for the current amplifier. It is used to connect the compensation capacitor for the current loop. CSEN 14 I Current sense. Measuring input for the lamp current. The applied voltage (coming from a shunt resistor) will be used for lamp current regulation. Sensed AC voltages can be applied directly. They will be rectified internally. EN 17 I Enable input. Logic high enables the device. FAULT 16 O Error output, any detected malfunctioning of the application will be reported as error on this pin. Error means the output is pulled low. The output is open drain to allow connecting multiple error outputs of similar devices together. GA 27 O Gate drive output of switch A GB 25 O Gate drive output of switch B GC 19 O Gate drive output of switch C GD 21 O Gate drive output of switch D GND 29 OCP 15 PGND 22 6 Analog ground pin. Reference ground for all control signals. I Over current protection. This input is used to monitor a voltage derived from a current sensor in any part of the converter. This voltage is compared to an internal reference voltage. Exceeding the internal reference voltage causes the device logic to turn the device off and report an error signal at the fault pin. Reference ground for the gate drivers and the gate drive supply. TPS68000 www.ti.com SLVS524 – OCTOBER 2005 PIN ASSIGNMENTS (continued) Terminal Functions (continued) NO. I/O DESCRIPTION I Phase delay programming input. A voltage between 0 V and 2 V applied to that pin programs the phase delay of the operating frequency compared to the synchronizing frequency. Applying V5 (5.0 V) programs the device as a master regarding the main oscillator frequency (see SYNC). The voltage applied to that pin is also used to determine the phase delay in a distributed dimming configuration PH 4 SA 28 SC 18 SET 2 I Operating frequency programming input. A resistor connected to this pin programs the internal operating frequency. STC 3 I Startup capacitor. A capacitor connected to that pin determines the the time the device waits in voltage regulation for the lamp to strike. SYNC 1 I/O Synchronization input or operating frequency output. If the device is configured as master (see PH) the pin is used to provide the synchronization frequency for the slaves. Otherwise the device works as slave and uses the applied frequency at that pin for synchronizing the operating frequency. V5 23 O Input/Output of the internal 5 V regulator for Gate drive supply. A capacitor must be connected to that pin to decouple switching noise caused by the gate drivers. V5A 26 O Supply input for the gate driver of the high-side switch A. A capacitor must be connected to that pin to supply the gate driver during switching (bootstrap). V5C 20 O Supply input for the gate driver of the high side switch C. A capacitor must be connected to that pin to supply the gate driver during switching (bootstrap). VA- 10 I Voltage amplifier negative input. This input is used to connect the compensation capacitor for compensating the voltage loop. VAO 9 O Voltage amplifier output. This is the output for the voltage amplifier. It is used to connect the compensation capacitor for the voltage loop. VCC 24 I Device supply voltage VREF 30 O Voltage reference. Output of the internal 3.3-V reference for use with all the analog control inputs. VSEN 11 I Voltage sense. Measuring input for the lamp voltage. This voltage is used for lamp voltage regulation (open lamp regulation) and overvoltage protection. Sensed AC voltages can be applied directly. They are rectified internally. Source connection of switch A Source connection of switch C PRODUCT PREVIEW TERMINAL NAME 7 TPS68000 www.ti.com SLVS524 – OCTOBER 2005 FUNCTIONAL BLOCK DIAGRAM (TPS68000) V5A GA SA V5 VCC V5 Control Supply OVP GB Gate Control Main Control V5C OCP FAULT GC SC V5 V5 GD PGND OCP OCP SYNC VREF SET Oscillator VREF_OCP Phase Shift Control PH CAO PRODUCT PREVIEW CA− EN Startup and Strike Control SS Rectifier CSEN VAO VA− ABR Analog and Burst Dimming BBR BF Rectifier VREF_VREG BC OVP VREF VSEN OVP VREF_OVP VREF GND PARAMETER MEASUREMENT INFORMATION C10 TPS68000 Supply Voltage 8V .. 30V VCC C1 VLOGIC Error Output Synchronization Synchronization Phase Shift Operating Frequency FAULT 0V Burst Duty Cycle (Burst Dimming Input) C5 EN STC GB GD ABR 0V BBR C6 BF VREF GND 8 C12 C14 C4 T1 QB C2 OCP CSEN CAO C8 CA− VSEN BC C7 QC 3 V5 2V Burst Frequency Direct Burst Dimming Input (Frequency + Duty Cycle) GC SC 3.3 V 0V QA C V5C PH SET R1 Device Enable Lamp current (Analog Dimming Input) SYNC 2.0 V V5A GA SA R2 VAO VA− PGND C9 QD C13 R3 R4 TPS68000 www.ti.com SLVS524 – OCTOBER 2005 THERMAL INFORMATION Implementation of integrated circuits in low-profile and fine-pitch surface-mount packages typically requires special attention to power dissipation. Many system-dependent issues such as thermal coupling, airflow, added heat sinks and convection surfaces, and the presence of other heat-generating components affect the power-dissipation limits of a given component. Three basic approaches for enhancing thermal performance are listed below. • Improving the power dissipation capability of the PCB design • Improving the thermal coupling of the component to the PCB • Introducing airflow in the system PRODUCT PREVIEW The maximum recommended junction temperature (TJ) of the TPS68000 device is 125°C. The thermal resistance of the 30-pin TSSOP package (PW) is RθJA = 63.9°C/W. Specified regulator operation is assured to a maximum ambient temperature TA of 85°C. Therefore, the maximum power dissipation is about 626 mW. More power can be dissipated if the maximum ambient temperature of the application is lower. T T J(MAX) A P 125°C 85°C 820 mW D(MAX) R 48.7 °CW JA (1) 9 MECHANICAL DATA MPDS019D – FEBRUARY 1996 – REVISED FEBRUARY 2002 DBT (R-PDSO-G**) PLASTIC SMALL-OUTLINE PACKAGE 30 PINS SHOWN 0,50 0,27 0,17 30 16 0,08 M 0,15 NOM 4,50 4,30 6,60 6,20 Gage Plane 0,25 1 15 0°–ā8° 0,75 0,50 A Seating Plane 0,15 0,05 1,20 MAX PINS ** 0,10 20 24 28 30 38 44 50 A MAX 5,10 6,60 7,90 7,90 9,80 11,10 12,60 A MIN 4.90 6,40 7,70 7,70 9,60 10,90 12,40 DIM 4073252/E 02/02 NOTES: A. B. C. D. All linear dimensions are in millimeters. This drawing is subject to change without notice. Body dimensions do not include mold flash or protrusion. Falls within JEDEC MO-153 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1 PACKAGE OPTION ADDENDUM www.ti.com 16-Nov-2005 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Eco Plan (2) Qty TPS68000DBT PREVIEW SM8 DBT 30 60 TBD Call TI Call TI TPS68000DBTR PREVIEW SM8 DBT 30 2000 TBD Call TI Call TI Lead/Ball Finish MSL Peak Temp (3) (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS) or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis. Addendum-Page 1 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment. TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty. Except where mandated by government requirements, testing of all parameters of each product is not necessarily performed. TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and applications using TI components. To minimize the risks associated with customer products and applications, customers should provide adequate design and operating safeguards. TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right, copyright, mask work right, or other TI intellectual property right relating to any combination, machine, or process in which TI products or services are used. Information published by TI regarding third-party products or services does not constitute a license from TI to use such products or services or a warranty or endorsement thereof. Use of such information may require a license from a third party under the patents or other intellectual property of the third party, or a license from TI under the patents or other intellectual property of TI. Reproduction of information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties, conditions, limitations, and notices. Reproduction of this information with alteration is an unfair and deceptive business practice. TI is not responsible or liable for such altered documentation. Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service voids all express and any implied warranties for the associated TI product or service and is an unfair and deceptive business practice. TI is not responsible or liable for any such statements. Following are URLs where you can obtain information on other Texas Instruments products and application solutions: Products Applications Amplifiers amplifier.ti.com Audio www.ti.com/audio Data Converters dataconverter.ti.com Automotive www.ti.com/automotive DSP dsp.ti.com Broadband www.ti.com/broadband Interface interface.ti.com Digital Control www.ti.com/digitalcontrol Logic logic.ti.com Military www.ti.com/military Power Mgmt power.ti.com Optical Networking www.ti.com/opticalnetwork Microcontrollers microcontroller.ti.com Security www.ti.com/security Telephony www.ti.com/telephony Video & Imaging www.ti.com/video Wireless www.ti.com/wireless Mailing Address: Texas Instruments Post Office Box 655303 Dallas, Texas 75265 Copyright 2005, Texas Instruments Incorporated