TC57 Line Regulator Controller Features General Description • Low Dropout Voltage: 100mV @ 650mA with FZT749 PNP Transistor • 2.7V to 8V Supply Range • Low Operating Current: 50A Operating, 0.2A Shutdown • Low True Chip Enable • Output Accuracy < ±2% • Small Package: 5-Pin SOT-23A The TC57 is a low dropout regulator controller that operates with an external PNP pass transistor, allowing the user to tailor the LDO characteristics to suit the application at hand. This results in lower dropout operation (and often lower cost) compared with traditional linear regulators with on-board pass transistors. The maximum output current of a TC57based regulator circuit is limited only by the characteristics of the external pass transistor. For example, a maximum output current of 650mA (with a dropout voltage of 100mV) results when an FZT749 pass transistor is used, while a Darlington configuration can deliver up to 4A. Applications • • • • • Battery Operated Systems Portable Instruments High-Efficiency Linear Regulator Post-Regulator for SMPS Power Supply or Battery Back-Up Supply for Memory Flexibility, and superior performance make this family of regulator controllers the ideal choice in applications where low dropout voltage and low installed cost are key. Functional Block Diagram Device Selection Table FZT749 Q1 VIN +3.3V Output Part Number Voltage TC572502ECT 2.5V Package Temperature Range 5-Pin SOT-23A -40°C to +85°C TC573002ECT 3.0V 5-Pin SOT-23A -40°C to +85°C TC573302ECT 3.3V 5-Pin SOT-23A -40°C to +85°C RBE 47K CIN 10μF (Tantalum) 2 RB 1K 4 EXT VOUT 3 CL 10μF (Tantalum) RL VIN TC573002ECT OFF Other output voltages and package options are available. Please contact Microchip Technology Inc. for details. VOUT +3V ON 5 SHDN GND 1 Package Type 3.3V Line Input, 3.0V, 500mA Output LDO 5-Pin SOT-23A SHDN EXT 5 4 TC57 1 2 3 GND VIN VOUT NOTE: 5-Pin SOT-23A is equivalent to the EIAJ SC-74A. 2001-2012 Microchip Technology Inc. DS21437C-page 1 TC57 1.0 ELECTRICAL CHARACTERISTICS *Stresses above 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 above those indicated in the operation sections of the specifications is not implied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability. Absolute Maximum Ratings* Input Voltage ........................................................+12V Output Current ....................................................50mA Output Voltage............................. -0.3V to (VIN + 0.3V) Power Dissipation.............................................150mW Operating Temperature Range.............-40°C to +85°C Storage Temperature Range ..............-40°C to +150°C TC55 ELECTRICAL SPECIFICATIONS TC57EP3002 Electrical Characteristics: SHDN = GND, VIN = VOUT + 1V, VOUT = 3V to 5V, IOUT = 0, TA = 25°C, Test Circuit of Figure 3-1, unless otherwise noted. (Note 2) Symbol Parameter Min Typ Max Units VIN Input Voltage — — 8 V VEXT Voltage on EXT Output — — 8 V VOUT Output Voltage VOUT Load Regulation VIN - VOUT IDD ISHDN 0.98 X VR VR ±0.5% 1.02 X VR V Test Conditions IOUT = 50mA (Note 1) 60 mV 1mA IOUT 100mA (Note 3) 100 — mV IOUT = 100mA (Note 2) 50 80 A VSHDN = VIN = 5V -60 — Dropout Voltage — Supply Current — Shutdown Supply Current — — 0.6 A VOUT/VIN Line Regulation — 0.1 0.3 %/V VOUT/T VOUT Temperature Coefficient — ±100 — ppm/°C ILEXT EXT Pin Leakage Current — — 0.5 A IEXT EXT Sink Current — — 25 mA VIH SHDN Input High Logic Threshold 1.5 — — V VIL SHDN Input Low Logic Threshold — — 0.25 V IIH SHDN Input Current @ VIH SHDN Input Current @ VIL — — 0.1 A VSHDN = VIN = 5V -0.2 -0.05 0 A VSHDN = GND IIL Note 1: 2: 3: 4: VSHDN = GND IOUT = 50mA, 4V VIN 8V (Note 3) IOUT = 10mA, -40°C <TJ85°C (Note 3) Note 4 VR is the regulator output voltage setting. Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value measured at a 1V differential. Varies with type of pass transistor used. Numbers shown are for the test circuit of Figure 3-1. The product of IEXT X VEXT must be less than the maximum allowable power dissipation. DS21437C-page 2 2001-2012 Microchip Technology Inc. TC57 2.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Table 2-1. TABLE 2-1: PIN FUNCTION TABLE Pin No. (5-Pin SOT-23A) Symbol 1 GND 2 VIN 3 VOUT 4 EXT 5 SHDN Description Ground terminal. Supply voltage input. Positive input voltage of 2.7V to 8.0V. Regulator voltage sense input. Connects to the collector of the external PNP pass transistor. Base Drive for the external PNP pass transistor. Shutdown Input. The device is enabled when SHDN VIL. The device enters a low power shutdown state when SHDN VIH. During shutdown, the output is disabled, and supply current falls to less than 1A. 2001-2012 Microchip Technology Inc. DS21437C-page 3 TC57 3.0 DETAILED DESCRIPTION 3.2 The TC57 series of precision low dropout regulator controllers use an external PNP transistor to accommodate a wide range of output currents. A series resistor (RB) limits the maximum base current drawn from the PNP transistor. Limiting the base drive both determines the regulator’s output current capability, as well as limits ground current when the device is operated in dropout. The PNP transistor’s VCE(SAT) is the only factor limiting dropout voltage. Base-Current Limiting Resistor Base current limiting resistor RB can be estimated using: EQUATION 3-3: RB = hFE (VIN – VBE) IOUT Where: hFE is the current gain of the pass transistor FIGURE 3-1: TEST CIRCUIT FZT749 Q1 VIN RBE 33K CIN 10μF (Tantalum) IOUT is the output current (in Amps) VOUT 3 CL 10μF (Tantalum) RL TC573002ECT OFF ON 5 VBE is the base-emitter voltage at the desired output current (in volts) VOUT RB 680Ω 4 EXT 2 V IN VIN Is the input voltage (in volts) SHDN GND 1 For example, assume a desired continuous output current of 1.0A, an input voltage of 5V, and an FZT749 pass transistor. The FZT749 has a typical hFE of 170, and a VBE of 0.8V; both specified at a collector current of 1.0A. Substituting these values into the equation above results in an RB value of 704 (closest standard value = 680). 3.3 3.1 Transistor Selection The PNP pass transistor must have satisfactory power dissipation, current gain, and collector current specifications to suit the application at hand. The maximum output current the circuit can deliver is influenced by hFE. The highest guaranteed output current is given by: EQUATION 3-1: ILOAD(MAX) = 25 mA x hFE(MIN) The transistor’s actual power dissipation (PD) is equal to the maximum load current times the maximum input/ output voltage differential, or: EQUATION 3-2: PD ILOAD(MAX) x (VIN(MAX) – VOUT(MIN)) The ideal transistor has a minimum hFE of 100, and a VCE(SAT) of less than 0.6V at full output current. For example, the Zetex FZT749 has an hFE of 170 at a collector current of 1A, and a guaranteed VCE(SAT) of 0.3V at a base current of 100mA. It is packaged in a SOT-223 and is recommended for use with the TC57. Other transistors are also suitable, depending on the required input and output voltages and output current (Table 3-1). DS21437C-page 4 Pull-Up Resistor and Output Capacitor A pull-up resistor (RBE, installed between the base and emitter of the pass transistor) facilitates rapid turn-off of the pass transistor in the event of a sudden decrease in load (Figure 3-2). Recommended values for this resistor are between 20K and 47K. A Tantalum output capacitor of at least 10F must be used to guarantee stability. Higher values decrease output noise and eliminate power-on overshoot, but extend power-up times. Table 3-1 lists several capacitor choices. FIGURE 3-2: 3.3V, 1A REGULATOR USING 5V SUPPLY INPUT FZT749 Q1 VIN = 5V RBE 33KΩ CIN 10μF (Tantalum) RB 680Ω 4 EXT OFF ON 5 COUT 10μF (Tantalum) VOUT 3 2 V IN 1 VOUT = 3.3V TC57 GND SHDN 2001-2012 Microchip Technology Inc. TC57 3.4 Input Capacitor 3.5 The addition of an input capacitor further reduces output noise, and negates the effects of power supply input impedance. A 10F (min) Tantalum capacitor is recommended. TABLE 3-1: Shutdown Mode The TC57 enters a low power shutdown mode when the shutdown input (SHDN) is high. During shutdown, the regulator is disabled, the output capacitor is discharged through the load, and supply current to the TC57 decreases to less than 1A. Normal operation resumes when SHDN is brought low. If the shutdown mode is not used, SHDN should be tied to VIN. COMPONENT SUPPLIERS Device Mounting Method Manufacturer Website CAPACITORS 267 Series Matsuo F95 Tantalum Series Surface Mount Surface Mount Nichicon http://www.matsuoelectronics.com http://www.nichicon-us.com 595 Tantalum Series Surface Mount Sprague http://www.vishay.com/brands/sprague OS-CON Series Through-Hole Sanyo LXF Series Through-Hole United Chemi-Con http://chemi-con.com ZTX749 Through-Hole Zetex http://www.zetex.com 2N4403 Through-Hole ON SEMI http://www.onsemi.com/home 2N2907A Through-Hole ON SEMI http://www.onsemi.com/home FZT749 Surface Mount Zetex http://www.sanyovideo.com TRANSISTORS 2001-2012 Microchip Technology Inc. http://www.zetex.com DS21437C-page 5 TC57 4.0 TYPICAL CHARACTERISTICS Note: The graphs and tables provided following this note are a statistical summary based on a limited number of samples and are provided for informational purposes only. The performance characteristics listed herein are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified operating range (e.g., outside specified power supply range) and therefore outside the warranted range. 1. OUTPUT VOLTAGE vs. OUTPUT CURRENT TC575002 (5V) TC574002 (4V) TA = 25°C VIN = 6V, CL = 10μF (Tantalum) 5.1 TA = 25°C VIN = 4.3V, CL = 10μF (Tantalum) 5.0 4.9 4.8 4.7 3.4 OUTPUT VOLTAGE VOUT (V) 4.1 OUTPUT VOLTAGE VOUT (V) OUTPUT VOLTAGE VOUT (V) TC573302 (3.3V) TA = 25°C VIN = 5V, CL = 10μF (Tantalum) 4.0 3.9 3.8 3.7 0 100 200 300 400 500 3.3 3.2 3.1 3.0 0 OUTPUT CURRENT IOUT (mA) 100 200 400 300 0 500 100 200 300 400 500 OUTPUT CURRENT IOUT (mA) OUTPUT CURRENT IOUT (mA) 2. OUTPUT VOLTAGE vs. INPUT VOLTAGE TC575002 (5V) CL = 10μF (Tantalum), TA = 25°C 4.2 IOUT = 1mA 500mA 4.8 4.6 100mA 4.4 4.2 4.5 IOUT = 1mA 5.05 500mA 5.00 100mA 4.95 4.90 5 5.5 INPUT VOLTAGE VIN (V) TC574002 (4V) IOUT = 1mA 100mA, 500mA 3.90 3.85 5 6 INPUT VOLTAGE VIN (V) DS21437C-page 6 100mA 3.4 8 7 4.0 4.5 INPUT VOLTAGE VIN (V) TC573302 (3.3V) CL = 10μF (Tantalum), TA = 25°C 3.5 OUTPUT VOLTAGE VOUT (V) 4.05 4 3.6 TC573302 (3.3V) 4.10 3.95 7 500mA 3.8 INPUT VOLTAGE VIN (V) CL = 10μF (Tantalum), TA = 25°C 4.00 6 IOUT = 1mA A 4.0 3.2 3.5 4.85 5.0 CL = 10μF (Tantalum), TA = 25°C 3.40 OUTPUT VOLTAGE VOUT (V) 5.0 OUTPUT VOLTAGE VOUT (V) OUTPUT VOLTAGE VOUT (V) OUTPUT VOLTAGE VOUT (V) CL = 10μF (Tantalum), TA = 25°C 5.10 5.2 OUTPUT VOLTAGE VOUT (V) TC574002 (4V) TC575002 (5V) CL = 10μF (Tantalum), TA = 25°C 3.3 IOUT = 1mA 500mA 3.1 2.9 100mA 2.7 2.5 2.8 3.35 IOUT = 1mA, 100mA 3.30 500mA 3.25 3.20 3.15 3.3 INPUT VOLTAGE VIN (V) 3.8 3 4 5 INPUT VOLTAGE VIN (V) 6 2001-2012 Microchip Technology Inc. TC57 4.0 TYPICAL CHARACTERISTICS (CONTINUED) 3. DROPOUT VOLTAGE vs. OUTPUT CURRENT TC575002 (5V) TC574002 (4V) 1.0 CL = 10μF (Tantalum) 1.0 0.8 0.6 0.4 80°C TOPR = 25°C 0.2 -3 30°C 0.0 0 200 400 600 800 DROPOUT VOLTAGE VIN -VOUT 1.0 DROPOUT VOLTAGE VIN -VOUT DROPOUT VOLTAGE VIN -VOUT TC573302 (3.3V) CL = 10μF (Tantalum) CL = 10μF (Tantalum) 0.8 0.6 0.4 80°C TOPR R = 25°C 0.2 -30 0°C 0.0 1000 0 200 OUTPUT CURRENT IOUT (mA) 400 800 600 0.8 0.6 80°C 0.4 TOPR = 25° 25°C 0.2 -30°C 0.0 0 1000 200 OUTPUT CURRENT IOUT (mA) 400 800 600 1000 OUTPUT CURRENT IOUT (mA) 4. SUPPLY CURRENT vs. INPUT VOLTAGE TC575002 (5V) TC574002 (4V) TC573302 (3.3V) 50 40 TOPR = 25°C, 80°C 30 -30°C 20 10 0 50 SUPPLY CURRENT IDD (μA) SUPPLY CURRENT IDD (μA) SUPPLY CURRENT IDD (μA) 50 40 30 TOPR = 25°C, 80°C 20 -30°C 10 0 5 6 7 8 40 30 TOPR = 25°C, 80°C 20 -30°C 10 0 4 5 INPUT VOLTAGE VIN (V) 6 7 3 4 6 5 INPUT VOLTAGE VIN (V) INPUT VOLTAGE VIN (V) TC574002 (4V) TC573302 (3.3V) 5. OUTPUT VOLTAGE vs. AMBIENT TEMPERATURE TC575002 (5V) VIN = 5.0V IOUT = 100mA, CL = 10μF (Tantalum) VIN = 6.0V IOUT = 100mA, CL = 10μF (Tantalum) OUTPUT VOLTAGE VOUT (V) OUTPUT VOLTAGE VOUT (V) 5.05 5.00 4.95 -20 0 20 40 60 AMBIENT TEMP. TA (°C) 2001-2012 Microchip Technology Inc. 80 3.40 OUTPUT VOLTAGE VOUT (V) 4.10 5.10 4.90 -40 VIN = 4.3V IOUT = 100mA, CL = 10μF (Tantalum) 4.05 4.00 3.95 3.90 -40 3.35 3.30 3.25 3.20 -20 20 40 60 0 AMBIENT TEMP. TA (°C) 80 -40 -20 0 20 40 60 80 AMBIENT TEMP. TA (°C) DS21437C-page 7 TC57 4.0 TYPICAL CHARACTERISTICS (CONTINUED) 6. SUPPLY CURRENT vs. AMBIENT TEMPERATURE TC575002 (5V) TC574002 (4V) 50 30 20 10 0 -40 SUPPLY CURRENT IDD (μA) 40 40 30 20 10 0 20 40 60 80 40 30 20 10 0 0 -20 VIN = 4.3V 50 50 SUPPLY CURRENT IDD (μA) SUPPLY CURRENT IDD (μA) TC573302 (3.3V) VIN = 5V VIN = 6V -40 AMBIENT TEMP. TA (°C) -20 0 20 40 60 AMBIENT TEMP. TA (°C) 80 -40 0 20 40 60 -20 AMBIENT TEMP. TA (°C) 80 7. INPUT TRANSIENT RESPONSE TC575002 (5V) TC575002 (5V) IOUT = 100mA, CL = 10μF (Tantalum) 8 Input Voltage 5.3 6 5.2 5 Output Voltage 5.1 4 5.0 3 4.9 7 5 3 4.9 TC574002 (4V) 7 4.3 5 4.2 4.1 3 4.0 2 3.9 INPUT VOLTAGE VIN (V) Input Voltage OUTPUT VOLTAGE VOUT (V) INPUT VOLTAGE VIN (V) 5.1 IOUT = 100mA, CL = 10μF (Tantalum) 6 DS21437C-page 8 Output Voltage Time (0.4 msec/div) 4.4 Time (0.4 msec/div) 5.2 5.0 TC574002 (4V) Output Voltage 5.3 4 IOUT = 10mA, CL = 10μF (Tantalum) 4 Input Voltage 6 Time (0.4 msec/div) 7 5.4 4.4 Input Voltage 6 4.3 5 4.2 4 Output Voltage 4.1 3 4.0 2 3.9 OUTPUT VOLTAGE VOUT (V) 7 INPUT VOLTAGE VIN (V) 5.4 OUTPUT VOLTAGE VOUT (V) INPUT VOLTAGE VIN (V) 8 OUTPUT VOLTAGE VOUT (V) IOUT = 10mA, CL = 10μF (Tantalum) Time (0.4 msec/div) 2001-2012 Microchip Technology Inc. TC57 4.0 TYPICAL CHARACTERISTICS (CONTINUED) 7. INPUT TRANSIENT RESPONSE (CONT.) TC573302 (3.3V) TC573302 (3.3V) 6 IOUT = 100mA, CL = 10μF (Tantalum) 6 3.7 3.6 4 3.5 3 Output Voltage 3.4 2 3.3 1 3.2 INPUT VOLTAGE VIN (V) 5 3.7 Input Voltage OUTPUT VOLTAGE VOUT (V) INPUT VOLTAGE VIN (V) Input Voltage 5 3.6 4 3.5 3 3.4 Output Voltage 2 3.3 1 3.2 Time (0.4 msec/div) OUTPUT VOLTAGE VOUT (V) IOUT = 10mA, CL = 10μF (Tantalum) Time (0.4 msec/div) 8. LOAD TRANSIENT RESPONSE TC575002 (5V) TC574002 (4V) Output Voltage 800 600 5.00 4.95 Output Current 400 300mA 200 4.90 4.85 1mA 0 OUTPUT VOLTAGE VOUT (V) 5.05 OUTPUT CURRENT IOUT (mA) 1000 5.10 OUTPUT VOLTAGE VOUT (V) VIN = 5V, CL = 10μF (Tantalum) 4.10 1000 4.05 800 4.00 600 400 3.95 Output Current 300mA 200 3.90 3.85 Time (10 msec/div) Output Voltage 1mA OUTPUT CURRENT IOUT (mA) VIN = 6V, CL = 10μF (Tantalum) 0 Time (10 msec/div) TC573302 (3.3V) VIN = 4.3V, CL = 10μF (Tantalum) OUTPUT VOLTAGE VOUT (V) Output Voltage 3.35 800 3.30 600 3.25 Output Current 400 300mA 200 3.20 3.15 1mA OUTPUT CURRENT IOUT (mA) 1000 3.40 0 Time (10 msec/div) 2001-2012 Microchip Technology Inc. DS21437C-page 9 TC57 5.0 PACKAGING INFORMATION 5.1 Package Marking Information 2 3 1 5.2 3 represents integer part of output voltage Symbol Voltage 2 3 4 5 6 2. 3. 4. 5. 6. represents first decimal of output voltage Symbol Voltage Symbol Voltage 0 1 2 3 4 .0 .1 .2 .3 .4 5 6 7 8 9 .5 .6 .7 .8 .9 represents production lot ID code Taping Form Component Taping Orientation for 5-Pin SOT-23A (EIAJ SC-74A) Devices User Direction of Feed Device Marking W PIN 1 P Standard Reel Component Orientation TR Suffix Device (Mark Right Side Up) Carrier Tape, Number of Components Per Reel and Reel Size Package 5-Pin SOT-23A DS21437C-page 10 Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size 8 mm 4 mm 3000 7 in 2001-2012 Microchip Technology Inc. TC57 5.3 Package Dimensions Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging SOT-23A-5 .075 (1.90) REF. .071 (1.80) .059 (1.50) .122 (3.10) .098 (2.50) .020 (0.50) .012 (0.30) PIN 1 .037 (0.95) REF. .122 (3.10) .106 (2.70) .057 (1.45) .035 (0.90) .006 (0.15) .000 (0.00) .010 (0.25) .004 (0.09) 10° MAX. .024 (0.60) .004 (0.10) Dimensions: inches (mm) 2001-2012 Microchip Technology Inc. DS21437C-page 11 TC57 6.0 REVISION HISTORY Revision C (November 2012) Added a note to the package outline drawing. DS21437C-page 12 2001-2012 Microchip Technology Inc. TC57 PRODUCT IDENTIFICATION SYSTEM To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office. PART CODE TC57 XX 02 ECT XX Output Voltage: Ex: 30 = 3.0V Tolerance: 2 = ±2% Temperature/Package: E: -40°C to +85°C CT: 5-Pin SOT-23A Taping Direction: TR: Standard Taping Sales and Support Data Sheets Products supported by a preliminary Data Sheet may have an errata sheet describing minor operational differences and recommended workarounds. To determine if an errata sheet exists for a particular device, please contact one of the following: 1. 2. Your local Microchip sales office The Microchip Worldwide Site (www.microchip.com) Please specify which device, revision of silicon and Data Sheet (include Literature #) you are using. New Customer Notification System Register on our web site (www.microchip.com/cn) to receive the most current information on our products. 2001-2012 Microchip Technology Inc. DS21437C-page13 TC57 NOTES: DS21437C-page14 2001-2012 Microchip Technology Inc. Note the following details of the code protection feature on Microchip devices: • Microchip products meet the specification contained in their particular Microchip Data Sheet. • Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions. • There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data Sheets. Most likely, the person doing so is engaged in theft of intellectual property. • Microchip is willing to work with the customer who is concerned about the integrity of their code. • Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not mean that we are guaranteeing the product as “unbreakable.” Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act. Information contained in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE. 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Silicon Storage Technology is a registered trademark of Microchip Technology Inc. in other countries. Analog-for-the-Digital Age, Application Maestro, BodyCom, chipKIT, chipKIT logo, CodeGuard, dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN, ECONOMONITOR, FanSense, HI-TIDE, In-Circuit Serial Programming, ICSP, Mindi, MiWi, MPASM, MPF, MPLAB Certified logo, MPLIB, MPLINK, mTouch, Omniscient Code Generation, PICC, PICC-18, PICDEM, PICDEM.net, PICkit, PICtail, REAL ICE, rfLAB, Select Mode, SQI, Serial Quad I/O, Total Endurance, TSHARC, UniWinDriver, WiperLock, ZENA and Z-Scale are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. GestIC and ULPP are registered trademarks of Microchip Technology Germany II GmbH & Co. & KG, a subsidiary of Microchip Technology Inc., in other countries. All other trademarks mentioned herein are property of their respective companies. © 2001-2012, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper. ISBN: 9781620767436 QUALITY MANAGEMENT SYSTEM CERTIFIED BY DNV == ISO/TS 16949 == 2001-2012 Microchip Technology Inc. Microchip received ISO/TS-16949:2009 certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona; Gresham, Oregon and design centers in California and India. The Company’s quality system processes and procedures are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping devices, Serial EEPROMs, microperipherals, nonvolatile memory and analog products. In addition, Microchip’s quality system for the design and manufacture of development systems is ISO 9001:2000 certified. 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