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 REG710
SBAS221E - DECEMBER 2001 - REVISED SEPTEMBER 2003
60mA Switched Cap BUCK/BOOST CONVERTER
FEATURES D Wide Input Range: 1.8V to 5.5V D Automatic Step-Up/Step-Down Operation D Low Input Current Ripple D Low Output Voltage Ripple D Minimum Number of External
ComponentsNo Inductors
DESCRIPTION
The REG710 is a switched capacitor voltage converter, that produces a regulated, low-ripple output voltage from an unregulated input voltage. A wide-input supply voltage of 1.8V to 5.5V makes the REG710 ideal for a variety of battery sources, such as single cell Li-Ion, or two and three cell nickel- or alkaline-based chemistries. The input voltage may vary above and below the output voltage and the output will remain in regulation. It works equally well for step-up or step-down applications without the need for an inductor, providing low EMI DC/DC conversion. The high switching frequency allows the use of small surface-mount capacitors, saving board space and reducing cost. The REG710 is thermally protected and current limited, protecting the load and the regulator during fault conditions. Typical ground pin current (quiescent current) is 65A with no load, and less than 1A in shutdown mode. The 5.5V version of the REG710 is available in a thin TSOT23-6 package. All other versions are available in a small SOT23-6 package.
D 1MHz Internal Oscillator Allows Small D D D D D
Capacitors Shutdown Mode Thermal and Current Limit Protection Six Output Voltages Available: 5.5V, 5.0V, 3.3V, 3.0V, 2.7V, 2.5V Small Packages: - SOT23-6 - TSOT23-6 (REG71055 and REG71050 Only) Evaluation Modules Available: REG710EVM-33, REG710EVM-5
APPLICATIONS D Smart Card Readers D SIM Card Supplies D Cellular Phones D Portable Communication Devices D Personal Digital Assistants D Notebook and Palm-Top Computers D Modems D Electronic Games D Handheld Meters D PCMCIA Cards D Card Buses D White LED Drivers D LCD Displays D Battery Backup Supplies
CPUMP 0.22F
Enable
3.3V to 4.2V
REG71050 REG710- 5 CIN 2.2F GND COUT 2.2F
R
R
R
LED
LED
LED
REG710 Used in White LED Backlight Application
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.
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
Copyright 2001-2003, Texas Instruments Incorporated
www.ti.com
REG710
www.ti.com SBAS221E - DECEMBER 2001 - REVISED SEPTEMBER 2003
ABSOLUTE MAXIMUM RATINGS(1)
Supply Voltage . . . . . . . . . . . Enable Input . . . . . . . . . . . . Output Short-Circuit Duration . . Operating Temperature Range . Storage Temperature Range . . Junction Temperature . . . . . . . Lead Temperature (soldering, 3s)
. . . . . . . . . . . . . . . . -0.3V to +6.0V . . . . . . . . . . . . . . . . . -0.3V to VIN . . . . . . . . . . . . . . . . . . . Indefinite . . . . . . . . . . . . . . -55C to +125C . . . . . . . . . . . . . . -65C to +150C . . . . . . . . . . . . . . -55C to +150C . . . . . . . . . . . . . . . . . . . +240C
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
NOTE: (1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may degrade device reliability.
PACKAGE ORDERING INFORMATION
PRODUCT 5.5V Output REG71055DDC 5V Output REG710NA-5 5V Output REG71050DDC 3.3V Output REG710NA-3.3 3V Output REG710NA-3 2.7V Output REG710NA-2.7 2.5V Output REG710NA-2.5 OUTPUT VOLTAGE 5.5V PACKAGE-LEAD PACKAGE DESIGNATOR(1) DDC SPECIFIED TEMPERATURE RANGE -40C to +85C PACKAGE MARKING(2) R10H ORDERING NUMBER REG71055DDCT TSOT23-6 REG71055DDCR REG710NA-5/250 5.0V 5.0V SOT23-6 TSOT23-6 DBV DDC -40C to +85C -40C to +85C R10B GAAI REG710NA-5/3K REG71050DDCT REG71050DDCR REG710NA-3.3/250 3.3V SOT23-6 DBV -40C to +85C R10C REG710NA-3.3/3K REG710NA-3/250 3.0V SOT23-6 DBV -40C to +85C R10D REG710NA-3/3K REG710NA-2.7/250 2.7V 2.5V SOT23-6 SOT23-6 DBV DBV -40C to +85C -40C to +85C R10F R10G REG710NA-2.7/3K REG710NA-2.5/250 REG710NA-2.5/3K TRANSPORT MEDIA, QUANTITY Tape and Reel, 250 Tape and Reel, 3000 Tape and Reel, 250 Tape and Reel, 3000 Tape and Reel, 250 Tape and Reel, 3000 Tape and Reel, 250 Tape and Reel, 3000 Tape and Reel, 250 Tape and Reel, 3000 Tape and Reel, 250 Tape and Reel, 3000 Tape and Reel, 250 Tape and Reel, 3000
NOTES: (1) For the most current specifications and product information, refer to our web site at www.ti.com. (2) Voltage will be marked on reel.
PIN CONFIGURATION
Top View TSOT23/SOT23
SIMPLIFIED BLOCK DIAGRAM
CPUMP 0.22F 4 VIN 5 CIN 2.2F 6 REG710
VOUT GND Enable
1 2 3
6 5 4
CPUMP+ VIN CPUMP- Control 1 VOUT COUT 2.2F
& Enable 3 Thermal
2 GND
2
REG710
www.ti.com SBAS221E - DECEMBER 2001 - REVISED SEPTEMBER 2003
ELECTRICAL CHARACTERISTICS Boldface limits apply over the specified temperature range, TA = -405C to +855C
At TA = +25C, VIN = VOUT/2 + 0.75V, IOUT = 10mA, CIN = COUT = 2.2F, CPUMP = 0.22F, VENABLE = 1.3V, unless otherwise noted. REG710NA PARAMETER INPUT VOLTAGE Tested Startup REG71055 REG710-5 All Other Models OUTPUT VOLTAGE REG71055 IOUT 10mA, 3.0V VIN 5.5V IOUT 30mA, 3.25V VIN 5.5V REG710-5, REG71050 IOUT 10mA, 2.7V VIN 5.5V IOUT 30mA, 3.0V VIN 5.5V IOUT 60mA, 3.3V VIN 4.2V REG710-3.3 IOUT 10mA, 1.8V VIN 5.5V IOUT 30mA, 2.2V VIN 5.5V REG710-3 IOUT 10mA, 1.8V VIN 5.5V IOUT 30mA, 2.2V VIN 5.5V REG710-2.7 IOUT 10mA, 1.8V VIN 5.5V IOUT 30mA, 2.0V VIN 5.5V REG710-2.5 IOUT 10mA, 1.8V VIN 5.5V IOUT 30mA, 2.0V VIN 5.5V OUTPUT CURRENT Nominal Short Circuit(1) OSCILLATOR FREQUENCY(2) EFFICIENCY(3) RIPPLE VOLTAGE(4) ENABLE CONTROL Logic High Input Voltage Logic Low Input Voltage Logic High Input Current Logic Low Input Current THERMAL SHUTDOWN Shutdown Temperature Shutdown Recovery SUPPLY CURRENT (Quiescent Current) In Shutdown Mode TEMPERATURE RANGE Specification Ambient Temperature Operating Ambient Temperature Storage Ambient Temperature Thermal Resistance, qJA TA TA TA SOT23-6 TSOT23-6 -40 -55 -65 200 220 +85 +125 +150 C C C C/W C/W IOUT = 0mA VIN = 1.8V to 5.5V, Enable = 0V 65 0.01 100 1 A A 160 140 C C IOUT = 10mA, VIN = 1.8V, REG710-3.3 IOUT = 30mA VIN = 1.8V to 5.5V 1.3 -0.2 VIN 0.4 100 100 V V nA nA 30 100 1.0 90 35 mA mA MHz % mVp-p 5.2 5.2 4.7 4.7 4.6 3.10 3.10 2.82 2.82 2.54 2.54 2.35 2.35 5.5 5.5 5.0 5.0 5.0 3.3 3.3 3.0 3.0 2.7 2.7 2.5 2.5 5.8 5.8 5.3 5.3 5.4 3.50 3.50 3.18 3.18 2.86 2.86 2.65 2.65 V V V V V V V V V V V V V See conditions under Output Voltage with a resistive load not lower than typical VOUT/IOUT. 3.0 2.7 1.8 5.5 5.5 5.5 V V V CONDITIONS MIN TYP MAX UNITS
(1) The supply current is twice the output short-circuit current. (2) The converter regulates by enabling and disabling periods of switching cycles. The switching frequency is the oscillator frequency during an active period. (3) See efficiency curves for other VIN/VOUT configurations. (4) Effective Series Resistance (ESR) of capacitors is < 0.1. 3
REG710
www.ti.com SBAS221E - DECEMBER 2001 - REVISED SEPTEMBER 2003
TYPICAL CHARACTERISTICS
At TA = +25C, VIN = VOUT/2 + 0.75V, IOUT = 5mA, CIN = COUT = 2.2F, CPUMP = 0.22F, VENABLE = 1.3V, unless otherwise noted.
EFFICIENCY vs LOAD CURRENT (REG710-5V, REG71050) 90 VIN = 2.7V 80 REG710-3.3 Efficiency (%) REG710-3 Efficiency (%) 70 60 50 40 30 1.5 2 2.5 3 3.5 VIN (V) 4 4.5 5 5.5 70 60 50 40 30 0.1 1 10 Load Current (mA) 100 VIN = 3V VIN = 3.3V VIN = 3.6V VIN = 4.2V VIN = VOUT
EFFICIENCY vs VIN 90 80 REG710-5, REG71050 REG71055
REG710-2.5 REG710-2.7
EFFICIENCY vs LOAD CURRENT (REG710- 3.3V) 90 80 Efficiency (%) 70 60 50 VIN = VOUT 40 30 0.1 1 10 Load Current (mA) 100 40 30 0.1 VIN = 1.8V 90 80 Efficiency (%) 70 60 50
EFFICIENCY vs LOAD CURRENT (REG710- 3V)
VIN = 1.8V
VIN = 2.2V
VIN = 2.2V
VIN = VOUT
1
10 Load Current (mA)
100
EFFICIENCY vs LOAD CURRENT (REG710- 2.7V) 80 75 70 Efficiency (%) 65 60 55 50 45 40 35 30 0.1 1 10 Load Current (mA) 100 VIN = VOUT VIN = 1.8V Efficiency (%) 80 75 70 65 60 55 50 45 40 35 30 0.1
EFFICIENCY vs LOAD CURRENT (REG710- 2.5V)
VIN = 1.8V VIN = 2.2V VIN = VOUT
VIN = 2.2V
1
10 Load Current (mA)
100
4
REG710
www.ti.com SBAS221E - DECEMBER 2001 - REVISED SEPTEMBER 2003
TYPICAL CHARACTERISTICS (Cont.)
At TA = +25C, VIN = VOUT/2 + 0.75V, IOUT = 5mA, CIN = COUT = 2.2F, CPUMP = 0.22F, VENABLE = 1.3V, unless otherwise noted.
SUPPLY CURRENT vs TEMPERATURE (No Load) 100
LOAD TRANSIENT RESPONSE
80 Supply Current (A) 20mV/div 60 VOUT
40 10mA/div ILOAD BW = 20MHz 0 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 Temperature (_C) Time (10s/div)
20
SUPPLY CURRENT vs TEMPERATURE (Not Enabled) 20 18 16 Supply Current (nA) 14 12 10 8 6 4 2 0 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 Temperature (_C) 50mV/div 4.5V 3.5V 2V/div
LINE TRANSIENT RESPONSE REG710- 3.3V RL = 110
Buck Mode VIN
Boost Mode
VOUT BW = 20MHz Time (50s/div)
OUTPUT VOLTAGE vs TEMPERATURE 0.2 Output Voltage Change (%) 0.1 0.0 -0.1 -0.2 -0.3 -0.4 -0.5 Percentage of Units (%) 20 25
OUTPUT VOLTAGE DRIFT HISTOGRAM
15
10
5
< -44
< -140
< -116
<4
< 28
< 52
< 76
< 100
VOUT Drift (ppm/_C)
> 100
0
40 60 80 100 Junction Temperature (_C)
120
140
< -20
< -92
< -68
-0.6 -40
-20
0 20
5
REG710
www.ti.com SBAS221E - DECEMBER 2001 - REVISED SEPTEMBER 2003
TYPICAL CHARACTERISTICS (Cont.)
At TA = +25C, VIN = VOUT/2 + 0.75V, IOUT = 5mA, CIN = COUT = 2.2F, CPUMP = 0.22F, VENABLE = 1.3V, unless otherwise noted.
OUTPUT RIPPLE VOLTAGE 250 225 COUT = 2.2F Load Current (mA) 20mV/div 200 175 150 125 100 75 50 25 0 1.5 2
SHORT- CIRCUIT LOAD CURRENT vs VIN
COUT = 10F, CPUMP = 1F 20mV/div REG710-3.3V VIN = 2.4V RL = 332 Time (5s/div)
BW = 20MHz
2.5
3
3.5 VIN (V)
4
4.5
5
5.5
OUTPUT RIPPLE VOLTAGE vs VIN (REG710-2.7V, 3.3V) 90 80 Output Ripple (mVPP) 70 60 50 40 30 20 10 0 1 1.5 2 2.5 3 3.5 4 VIN (V) 4.5 5 5.5 6 REG710-3.3 COUT = 10F REG710-3.3 COUT = 2.2F REG710-2.7 COUT = 10F 2V/div 100mA/div REG710-2.7 COUT = 2.2F
INPUT CURRENT AT TURN- ON
IIN
VOUT REG710-3.3V VIN = 3.0V IO = 30mA Time (50s/div)
BW = 20MHz
OUTPUT RIPPLE VOLTAGE vs VIN (REG710-2.5V, 3V, 5V) 90 80 Output Ripple (mVPP) 70 60 50 40 30 20 10 0 1 1.5 2 2.5 3 3.5 4 VIN (V) 4.5 5 5.5 6 REG710-2.5, COUT = 10F REG710-2.5 COUT = 2.2F REG710-3 COUT = 2.2F REG710-5 REG71050 COUT = 2.2F REG710-5 REG71050 COUT = 10F REG710-3 COUT = 10F
6
REG710
www.ti.com SBAS221E - DECEMBER 2001 - REVISED SEPTEMBER 2003
THEORY OF OPERATION
The REG710 regulated charge pump provides a regulated output voltage for input voltages ranging from less than the output to greater than the output. This is accomplished by automatic mode switching within the device. When the input voltage is greater than the required output, the unit functions as a variable frequency switch-mode regulator. This operation is shown in Figure 1. Transistors Q1 and Q3 are held off, Q4 is on, and Q2 is switched as needed to maintain a regulated output voltage. During the second half cycle the FET switched are configured as shown in Figure 2B, and the voltage on CPUMP is added to VIN. The output voltage is regulated by skipping clock cycles as necessary.
PEAK CURRENT REDUCTION
In normal operation, the charging of the pump and output capacitors usually leads to relatively high peak input currents which can be much higher than that of the average load current. The regulator incorporates circuitry to limit the input peak current, lowering the total EMI production of the device and lowering output voltage ripple and input current ripple. Input capacitor (CIN) supplies most of the charge required by input current peaks.
VIN Q1 OFF CPUMP Q3 CIN OFF Q4 ON VOUT COUT Q2 SWITCHED
PROTECTION
The regulator has thermal shutdown circuitry that protects it from damage caused by overload conditions. The thermal protection circuitry disables the output when the junction temperature reached approximately 160C, allowing the device to cool. When the junction temperature cools to approximately 140C, the output circuitry is automatically reenabled. Continuously running the regulator into thermal shutdown can degrade reliability. The regulator also provides current limit to protect itself and the load.
Step- Down (Buck) Mode
Figure 1. Simplified Schematic of the REG710 Operating in the Step-Down Mode
When the input voltage is less than the required output voltage, the device switches to a step-up or boost mode of operation, as shown in Figure 2. A conversion clock of 50% duty cycle is generated. During the first half cycle the FET switches are configured as shown in Figure 2A, and CPUMP charges to VIN.
SHUTDOWN MODE
A control pin on the regulator can be used to place the device into an energy-saving shutdown mode. In this mode, the output is disconnected from the input as long as VIN is greater than or equal to minimum VIN and the input quiescent current is reduced to 1A maximum.
V IN Q1 OFF C PUMP Q3 C IN ON Q4 OFF V OUT C OUT Q2 ON
V IN Q1 ON C PUMP Q3 C IN OFF Q4 ON V OUT C OUT Q2 OFF
(A)
Step- (Boost) Mode Up
(B)
Figure 2. Simplified Schematic of the REG710 Operating in the Step-Up or Boost Mode
7
REG710
www.ti.com SBAS221E - DECEMBER 2001 - REVISED SEPTEMBER 2003
CAPACITOR SELECTION
For minimum output voltage ripple, the output capacitor COUT should be a ceramic, surface-mount type. Tantalum capacitors generally have a higher Effective Series Resistance (ESR) and may contribute to higher output voltage ripple. Leaded capacitors also increase ripple due to the higher inductance of the package itself. To achieve best operation with low input voltage and high load current, the input and pump capacitors (CIN and CPUMP, respectively) should also be surface-mount ceramic types. In all cases, X7R or X5R dielectric are recommended. See the typical operating circuit shown in Figure 3 for component values.
CPUMP 0.22F
The approximate efficiency is given by: Efficiency (%) = VOUT/(2 x VIN) x 100 (step-up operating mode) or
V OUT V IN
100
(step-down operating mode) Table 2 lists the approximate values of the input voltage at which the device changes internal operating mode. See efficiency curves in the Typical Characteristics section for various loads and input voltages.
Table 2. Operating Mode Change Versus VIN
Enable VIN 3 5 CIN 2.2F REG710 4 6 1 COUT 2.2F PRODUCT VOUT REG710-2.5 REG710-2.7 REG710-3 REG710-3.3 2 GND REG710-5, REG71050, REG71055 OPERATING MODE CHANGES AT VIN OF > 3.2V > 3.4V > 3.7V > 4.0V Step-Up Only
LAYOUT
Large transient currents flow in the VIN, VOUT, and GND traces. To minimize both input and output ripple, keep the capacitors as close as possible to the regulator using short, direct circuit traces. A suggested PCB routing is shown in Figure 4. The trace lengths from the input and output capacitors have been kept as short as possible.
VENABLE VOUT VIN
Figure 3. Typical Operating Circuit
With light loads or higher input voltage, a smaller 0.1F pump capacitor (CPUMP) and smaller 1F input and output capacitors (CIN and COUT, respectively) can be used. To minimize output voltage ripple, increase the output capacitor, COUT, to 10F or larger. The capacitors listed in Table 1 can be used with the REG710. This is only a representative list of those parts that are compatible.
AREA: < 0.08 sq. inches
EFFICIENCY
The efficiency of the charge pump regulator varies with the output voltage version, the applied input voltage, the load current, and the internal operation mode of the device.
CP CIN GND
COUT
Figure 4. Suggested PCB Design for Minimum Ripple Table 1. Suggested Capacitors
MANUFACTURER Kemet Panasonic PART NUMBER C1206C255K8RAC C1206C224K8RAC ECJ-2YBOJ225K ECJ-2VBIC224K ECJ-2VBIC104 EMK316BJ225KL TKM316BJ224KF VALUE 2.2F 0.22F 2.2F 0.22F 0.1F 2.2F 0.22F TOLERANCE 10% 10% 10% 10% 10% 10% 10% DIELECTRIC MATERIAL X7R X7R X5R X7R X7R X7R X7R PACKAGE SIZE 1206 1206 805 805 805 1206 1206 RATED WORKING VOLTAGE 10V 10V 6.3V 16V 16V 16V 25V
Taiyo Yuden
8
REG710
www.ti.com SBAS221E - DECEMBER 2001 - REVISED SEPTEMBER 2003
APPLICATION CIRCUITS
0.22F CP1 3.3V 3.0V VIN 2.2F CIN VOUT 2.2F EN VIN VOUT REG71050 REG710-5 GND 2.2F COUT REG710-3.3 REG710-3 EN GND 0.22F CP2
1.8V
5.0V
+ -
VIN
Figure 5. REG710 Circuit for Step-Up Operation from 1.8V to 5.0V with 10mA Output Current
0.22F CP1
VIN + - 4.7F CIN
VOUT
VOUT 4.7F COUT Enable
CPUMP 0.22F
REG710-3.3 VIN GND
0.22F CP2
3.3V to 4.2V
REG71050 REG710- 5 CIN 2.2F GND COUT 2.2F
R
R
R
LED
LED
LED
VIN
VOUT
REG710-3.3 GND
Figure 6. REG710 Circuit for Doubling the Output Current
Figure 7. REG710 Circuit for Driving LEDs
9
REG710
www.ti.com SBAS221E - DECEMBER 2001 - REVISED SEPTEMBER 2003
0.22F C- VIN VOUT VIN 2.2F EN REG710-3.3 GND RL C+ VOUT 2.2F 3.3V IL
2.2F 74HC04 5818 5818 -2.7V at 1mA when IL = 10mA 2.2F
Figure 8. REG710 with Negative Bias Supply
10
PACKAGE OPTION ADDENDUM
www.ti.com
3-Oct-2003
PACKAGING INFORMATION
ORDERABLE DEVICE REG71055DDCR REG71055DDCT REG710NA-2.5/250 REG710NA-2.5/3K REG710NA-2.7/250 REG710NA-2.7/3K REG710NA-3.3/250 REG710NA-3.3/3K REG710NA-3/250 REG710NA-3/3K REG710NA-5/250 REG710NA-5/3K STATUS(1) ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE PACKAGE TYPE TO/SOT TO/SOT SOP SOP SOP SOP SOP SOP SOP SOP SOP SOP PACKAGE DRAWING DDC DDC DBV DBV DBV DBV DBV DBV DBV DBV DBV DBV PINS 6 6 6 6 6 6 6 6 6 6 6 6 PACKAGE QTY 3000 250 250 3000 250 3000 250 3000 250 3000 250 3000
(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.
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 Amplifiers Data Converters DSP Interface Logic Power Mgmt Microcontrollers amplifier.ti.com dataconverter.ti.com dsp.ti.com interface.ti.com logic.ti.com power.ti.com microcontroller.ti.com Applications Audio Automotive Broadband Digital Control Military Optical Networking Security Telephony Video & Imaging Wireless Mailing Address: Texas Instruments Post Office Box 655303 Dallas, Texas 75265 Copyright 2003, Texas Instruments Incorporated www.ti.com/audio www.ti.com/automotive www.ti.com/broadband www.ti.com/digitalcontrol www.ti.com/military www.ti.com/opticalnetwork www.ti.com/security www.ti.com/telephony www.ti.com/video www.ti.com/wireless


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