DEMO MANUAL DC2006A-A LTC3862-2 High Power, High Voltage Step-Up Converter Description Demonstration circuit 2006A-A is a multiphase high power, high voltage step-up DC/DC converter featuring the LTC(R)3862-2 boost controller. This demo board converts a 6V to 36V input voltage to a 50V output at up to 10A with four phases by utilizing and synchronizing two LTC3862-2 controller IC's. The DC2006A-A supports three ways of biasing the LTC3862-2 controllers IC's by directly from the input voltage, or from a low power switching power supply or from an LDO regulator. An onboard SEPIC power supply can provides a stable 10V bias voltage for both LTC3862-2 controllers over the wide varying input voltage. This allows the use of either logic level or standard level MOSFETs, even when the input voltage drops far below the 10V set-point, which is useful in wide varying input applications. An onboard LDO regulator can be selected for biasing the LTC3862-2 controllers, which simplifies the electrical schematic and can be very useful in applications where the input voltage is always higher than the required gate drive voltage. The LTC3862-2 is a multiphase step-up (boost) DC/DC controller that delivers high output power in a compact footprint. Up to 12 power stages can be paralleled and clocked out-of-phase to minimize input and output filtering requirements. It has a 5.5V to 36V input voltage range and an output voltage range that is dependent on the choice of external components. The LTC3862-2 utilizes peak current mode architecture for easy loop compensation and multiphase operation with very accurate phase-to-phase current matching. The fixed operating frequency can be set with a single resistor over a 75kHz to 500kHz range or can be synchronized to an external clock over a 50kHz to 600kHz frequency range. A current sense resistor is used in each phase to provide a precise cycle-by-cycle current limit. The powerful onboard gate drivers minimize switching losses and allow the use of multiple MOSFETs in parallel for very high current applications. Design files for this circuit board are available at http://www.linear.com/demo L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Performance Summary PARAMETER CONDITIONS Minimum Input Supply Voltage Maximum Input Supply Voltage Output Voltage Range VIN = 6V to 36V, IOUT1 = 0A to 10A Typical Switching frequency VALUE UNITS 6 V 36 V 50 2% V 200 kHz Typical Output Ripple (VOUT, 50V) ILOAD = 5.0A 120 mV Efficiency Typical (VOUT, 50V, VIN 24V) See Figure 3 97 % dc2006aafa 1 DEMO MANUAL DC2006A-A Quick Start Procedure Demonstration circuit 2006 is easy to set up to evaluate the performance of the LTC3862-2 controllers. Refer to Figure 1 for proper measurement equipment setup and follow the procedure below: NOTE. When measuring the input or output voltage ripple, care must be taken to avoid a long ground lead on the oscilloscope probe. Measure the input or output voltage ripple by touching the probe tip directly across the VIN or VOUT and GND terminals. See Figure 2 for proper scope probe technique. 1. Place jumper RUN1 (JP11) in the ON position. Place jumper RUN2 (JP10) in ON position also. Note: circuit will not operate if jumper RUN2 (JP10) is in OFF position. 2. Place jumper BIAS (JP12) to the VIN position. 3. With power off, connect the input power supply to VIN and GND. Turn the input power source on and slowly increase the input voltage. Be careful not to exceed 36V. NOTE: Make sure that the input voltage VIN does not exceed 36V. If higher operating voltage is required, power components with higher voltage ratings should be used. 4. Check for the proper output voltage of 50V. If there is no output, temporarily disconnect the load to make sure that the load is not set too high. 5. Once the proper output voltages are established, adjust the load within the operating range and observe the output voltage regulation, ripple voltage, efficiency and other parameters. LTC3862-2 BIAS CIRCUITS The demo board DC2006A supports three ways of biasing LTC3862 controllers. Place jumper BIAS (JP12) to the VIN position for input voltage above 10V, but below 36V. In this case bias pins of LTC3862-2 controllers will be connected directly to the input voltage. Place jumper BIAS (JP12) to the AUX position for input voltage that can drop below 10V. The bias pins of LTC38622 controllers will be connected directly to the low power SEPIC converter, which provides regulated 10V. The demo board DC2006A can be used for higher than 36V input voltages. In that case, the bias power for LTC38622 has to be limited under 36V. An external power source can be used to accomplish this or the optional bias regulator can be used. Remove R44 and R47 resistors and install 0 resistors R44 and R42. Place jumper BIAS (JP12) to the AUX position. Since the power dissipation in linear regulator Q17 depends on the size of MOSFETs, switching frequency and voltage difference across Q17, all of the factors need to be considered when selecting the appropriate device for Q17. Please refer to LTC3862-2 data sheet. Converter Efficiency DC2006A-A efficiency exceeds 96% at 12V input voltage generating 50V at 10.0A and 97% at 14V input voltage, see Figure 3. However output (load) current should be decreased at input voltages below 10V to reduce thermal stress on the converter. Figure 4 demonstrates maximum load current, as a function of input voltage, assuming 50V output voltage. All measurements were conducted at room temperature, natural convection cooling with no air flow. 2 dc2006aafa DEMO MANUAL DC2006A-A Quick Start Procedure 40V DC POWER SUPPLY - + + - + + - - VOUT LOAD Figure 1. Proper Measurement Equipment Setup dc2006aafa 3 DEMO MANUAL DC2006A-A Quick Start Procedure 12 98 10 (%) 97 96 95 12VIN 14VIN 24VIN 36VIN 94 GND VIN 93 1.0 3.0 5.0 (A) 7.0 9.0 MAXIMUM LOAD CURRENT (A) 99 8 6 4 2 0 1.0 3.0 5.0 7.0 INPUT VOLTAGE (V) 9.0 DC2006AA F04 DC2006 F03 Figure 2. Measuring Input or Output Ripple Figure 3. DC2006A-A, Efficiency vs Load Figure 4. Load Current Derating vs Input Voltage Parts List ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Cap., NPO 220pF, 25V, 5%, 0603 MURATA, CGM1885C1H221JA16D SUN ELECT., 50CE220KX Required Circuit Components 1 2 2 2 CC1, CC2 CIN1, CIN2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 22 23 24 8 10 4 5 2 2 7 3 1 1 1 2 2 4 4 1 1 1 1 4 4 1 1 CIN3-CIN10 COUT1-COUT4, COUT7-COUT11, COUT14 COUT5, COUT6, COUT12, COUT13 C1, C8, C10, C17, C28 C6, C15 C2, C12 C3, C7, C9, C11, C20, C22, C26 C4, C13, C33 C18 C19 C21 C24, C31 C5, C14 D1, D4, D5, D8 D2, D11, D12, D13 D16 D15 D14 D17 Q3, Q4, Q7, Q8 Q2, Q6, Q10, Q14 Q16 Q17 4 Cap., Alum 220F, 50V, 12.8 x 12.8 Cap., X5R 10uF, 50V, 20%, 1812 Cap., X7S 4.7F, 100V, 10%, 1812 Cap., Alum. Elect. 100F, 63V Cap., X7R 0.1F, 25V, 10%, 0603 Cap., X7R 0.47F, 16V, 10%, 0603 Cap., NPO 1nF, 25V, 5%, 0603 Cap., X7R 10nF, 25V, 5%, 0603 Cap., X5R 1F, 50V, 10%, 1206 Cap., X5R 1F, 25V, 10%, 0603 Cap., Polymer, 15uF, 25V Cap., X7S 2.2F, 100V, 10%, 1206 Cap., X7R 2.2F, 25V, 20%, 0805 Cap., X5R 4.7F, 50V, 10%, 1206 Diode Schottky, SOD-323 Diode Schottky 8Amp 100V Volt. Reg. Diode 12V, SOD-323 Diode Schottky 1A 60V Diode Zener 7.5V Diode, 100V, SOD523 NPN/PNP Transistor MOSFET 75V MOSFET, 60V Transistor, SOT223 TDK, CKG45NX5R1H106M TDK, C4532X7S2A475K SUN ELECT., 63CE100KX AVX, 06033C104KAT2A AVX, 0603YC474KAT2A AVX, 06033A102JAT2A AVX, 06033C103JAT2A MURATA, GRM188R61H105KAAL AVX,06033D105KAT2A Panasonic,25TQC15MYFB TDK, C3216X7S2A225M AVX, 08053C225MAT2A TAIYO YUDEN, UMK316BJ475KL-T DIODES/ZETEX, BAT760-7 VISHAY, V8P10-M3 NXP SEMI., PDZ12B DIODES INC. PD3S160-7 NXP/ PHILIPS PDZ7.5B NXP/ PHILIPS BAS516 NXP SEMI., PBSS4140DPN INFINEON, BSC036NE7NS3G FAIRCHILD, FDC5612 NXP SEMI., PZTA42 dc2006aafa DEMO MANUAL DC2006A-A Parts List ITEM QTY 25 26 27 28 29 30 31 32 33 34 35 36 37 38 38 39 40 41 42 43 44 45 46 47 1 4 1 8 4 2 4 1 3 3 2 2 1 1 2 1 1 1 1 1 1 1 1 2 REFERENCE PART DESCRIPTION Q12 L1, L2, L3, L4 T2 R37, R13, R14, R35, R47, R21, R22, R39 RS2, RS3, RS6, RS8 R1, R17 R2, R12, R20, R29 R45 R5, R19, R9 R7, R24 R10, R27 R11, R28 R34 R18 R46, R31 R32 R50 R23 R44 R3 R41 R40 R38 U1, U2 Transistor, SOT-23 INDUCTOR, 10H Dual Winding Inductor, 100H Res., Chip 0, Jumper 0603 Res., 0.004, 1/2W, 1%, 2010 Res., Chip 84.5k, 1%, 0805 Res., Chip 10, 5%, 0603 Res., Chip 402, 1%, 0603 Res., Chip 21k, 1%, 0603 Res., Chip 66.5k, 1%, 0603 Res., Chip 11.8k, 1%, 0603 Res., Chip 475k, 1%, 1206 Res., Chip 100k, 1%, 0603 SMT JUMPER LINK Res., Chip 10k, 1%, 0603 Res., Chip 0.1, 1%, 0603 Res., Chip 8.66k, 1%, 0603 Res., Chip 1M, 1%, 0603 Res., Chip 12.1k, 1%, 0603 Res., Chip 3.32k, 1%, 1206 Res., Chip 10k, 1%, 1206 Res., Chip 115k, 1%, 0603 Res., Chip 3.01k, 1%, 0603 48 1 U3 45 1 R44 46 1 R3 47 1 R41 48 1 R40 Additional Demo Board Circuit Components 1 R4, R8, R15, R25, R26, R30, R42 2 C16, C29, C30 2 D3, D6, D7, D10 3 Q1, Q5, Q9, Q13 Hardware 1 10 E1-E10 2 4 J1, J2, J3, J4 3 1 JP1 4 1 JP2 5 4 MTGS at 4 Corners 6 2 XJP1, XJP2 7 4 J1-J4 8 4 J1-J4 9 4 J1-J4 10 4 J1-J4 MANUFACTURER/PART NUMBER DIODES, MMBTA42-7-F COILCRAFT, SER2918H-103KL COOPER BUSSMANN, DRQ73-101-R VISHAY, CRCW06030000Z0EA VISHAY, WSL20104L000FEA VISHAY, CRCW080584K5FKEA VISHAY, CRCW060310R0JNEA VISHAY,CRCW0603402RFKEA VISHAY, CRCW060321K0FKEA VISHAY, CRCW060366K5FKEA VISHAY, CRCW060311K8FKEA VISHAY, CRCW1206475KFKEA VISHAY, CRCW0603100KFKEA HARWIN, S1911-46 VISHAY, CRCW060310K0FKEA VISHAY, WSL0603R1000FEA VISHAY, CRCW06038K66FKEA VISHAY, CRCW06031M00FKEA VISHAY,,CRCW060312K1FKEA VISHAY,CRCW12063K32FKEA VISHAY,CRCW120610K0FKEA VISHAY, CRCW0603115K0FKEA VISHAY, CRCW06033K01FKEA IC., LTC3862EUH-2#PBF, 5mm x 5 mm, QFN LINEAR TECH, LTC3862EUH-2#PBF IC., LTC3805-5 LINEAR TECH, LTC3805EMSE-5#TRMPBF Res., Chip 12.1k, 1%, 0603 VISHAY,,CRCW060312K1FKEA Res., Chip 3.32k, 1%, 1206 VISHAY,CRCW12063K32FKEA Res., Chip 10k, 1%, 1206 VISHAY,CRCW120610K0FKEA Res., Chip 115k, 1%, 0603 VISHAY, CRCW0603115K0FKEA OPT OPT OPT OPT TESTPOINT, TURRET, .094" CONN, BANANA JACK, KEYSTONE-575-4 JMP, 3 PIN, 1 ROW, 0.079" JMP, 3 PIN, 2 ROW, 0.079" STANDOFF, NYLON .5 1/2" SHUNT, .079" CENTER Broaching Studs, .625x0.250 Nut Brass, # 10-32 M/S BR PL Ring, Lug # 10 Washer #10, Tin Plated Brass MILL-MAX, 2501-2-00-80-00-00-07-0 KEYSTONE 575-4 SULLINS, NRPN031PAEN-RC SULLINS, NRPN032PAEN-RC KEYSTONE, 8833(SNAP-ON) SAMTEC, 2SN-BK-G PennEngineering, KFH-032-10ET ANY 10-32 KEYSTONE, 8205 ANY #10EXT BZ TN dc2006aafa 5 1 2 3 4 J2 E7 E8 E5 E6 0 R21 R22 0 JP3 BLANK 0 C29 OPT SYNC_AUX CC1 220pF CC2 220pF CIN1 220uF 50V OPT C22 C30 OPT + CIN2 220uF 50V 0 9 10 JP5 DMAX 0 0 8 7 6 5 4 3 2 1 24 23 JP9 DMAX CIN3 10uF 50V JP4 SLOPE R39 R35 R11 475k VOUT1 R37 0.47uF R10 11.8k C6 R7 66.5k JP8 SLOPE 10nF R31 R28 475K 10K 0.47uF R27 11.8k C15 R24 66.5k VOUT2 CLKOUT2 TP1 C16 R26 OPT 0 R14 R13 JP2 PHASE JP7 BLANK + 10nF C7 R9 21k JP6 PHASE E10 A 10 9 8 7 6 5 4 3 2 1 24 23 CIN5 10uF 50V SENSE2- SENSE2+ NC GATE2 PGND SENSE1- SENSE1+ GATE1 INTVCC VIN 3V8 RUN PLLFLTR SYNC CLKOUT SGND FB ITH SS FREQ PHASEMODE BLANK SLOPE DMAX SENSE2- SENSE2+ NC GATE2 PGND SENSE1- SENSE1+ GATE1 INTVCC VIN 3V8 RUN U2 LTC3862EUH-2 PLLFLTR SYNC CLKOUT SGND FB ITH SS FREQ PHASEMODE BLANK SLOPE DMAX U1 LTC3862EUH-2 CIN4 10uF 50V 12 11 13 14 15 20 21 16 17 18 22 19 12 11 13 14 15 20 21 16 17 18 22 19 CIN6 10uF 50V R5 21k 1nF A B D8 BAT760 5 2 R30 OPT 4 1 OPT 4 1 R15 4 1 OPT OPT 4 1 C17 0.1uF C10 0.1uF C8 0.1uF C1 0.1uF R2 C11 10nF R20 4 C3 10nF 4 10 Q1 OPT C9 10nF R12 4 10 C20 10nF R29 4 Q13 OPT RS5 OPT Q9 OPT 10 Q5 OPT RS1 OPT 4 4 10 RS7 OPT C RS6 4m RS4 OPT C 5 G1 4 S1 RS2 4m Q10 4 Q14 RS8 4m D2 +VIN GND J8 J7 6V - 36V +VIN S2 HS1 OPT G2 HEAT SINK RS3 4m D1 +VIN +VIN Q6 BSC036NE7NS3G Q2 BSC036NE7NS3G OPT 10uH 10uH OPT L7 L4 L3 L6 10uH L2 10uH L1 HS2 OPT 3 3 3 3 3 COUT14 4.7uF 100V COUT7 4.7uF 100V CUSTOMER NOTICE D13 V8P10 D7 OPT 3 D6 OPT D12 V8P10 3 D11 V8P10 D3 OPT 3 D2 V8P10 D10 OPT D COUT8 4.7uF 100V COUT1 4.7uF 100V D THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. COUT10 4.7uF 100V COUT3 4.7uF 100V SCALE = NONE VICTOR K. HZ APPROVALS COUT9 4.7uF 100V COUT2 4.7uF 100V LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES. VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APP ENG. APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 Figure 4. DC2006A-A Four-Phase Boost Converter 5 2 R8 R25 INTVCC1 Q8 PBSS4140DPN 5 2 Q7 PBSS4140DPN INTVCC1 5 2 INTVCC Q4 PBSS4140DPN D5 BAT760 D4 BAT760 OFF ON C13 1uF RUN2 JP10 VBIAS 1 2 3 R17 84.5K +VIN C5 4.7uF C4 1uF PBSS4140DPN Q3 INTVCC OFF D1 BAT760 CIN10 10uF 50V ON CIN9 10uF 50V RUN1 JP11 VBIAS 1 2 3 CIN8 10uF 50V C14 4.7uF 1nF INTVCC1 C12 R19 21k R16 OPT VOUT1 INTVCC C2 R1 84.5k +VIN CIN7 10uF 50V B NOTE: VALUES OF THE COMPONENTS MARKED '*' SPECIFIED IN CORRESPONDING DRAWINGS DC2006A-A AND DC2008A-B. GND SYNC2 GND SYNC1 120 GND GND 180 3 2 1 +VIN 1.66 1.0** 0.625 3 2 1 6V - 36V J1 180 3 2 1 120 325ns 250ns** 175ns 3 2 1 325ns 250ns** 175ns 3 2 1 75% 84%** 96% 3 2 1 1.66 1.0** 0.625 3 2 1 75% 84%** 96% 3 2 1 GND 25 GND 1 2 1 2 1 2 1 2 6 3 6 3 6 3 6 3 5 1 2 3 5 1 2 3 5 5 1 5 5 4 1 2 3 3 1 2 3 1 2 3 1 2 3 6 1 2 3 2 BSC036NE7NS3G 5 1 2 3 5 BSC036NE7NS3G 1 E9 3 G1 +VIN 2 S1 25 4 D1 HEAT SINK G2 6 S2 5 D2 6 +VIN VOUT2 VOUT1 COUT6 100uF 63V + + 50V COUT13 100uF 63V R18 0 COUT5 100uF 63V J4 J3 J6 J5 GND GND VOUT2 VOUT2 GND GND VOUT1 VOUT1 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only E14 E13 VOUT2 E12 E11 DATE 6-25-13 DATE: N/A SIZE E LTC3862EUH-2 DEMO CIRCUIT 2006A-A Thursday, September 26, 2013 IC NO. SHEET 1 2 OF 2 REV. HIGH POWER, HIGH VOLTAGE STEP-UP CONVERTER TECHNOLOGY + COUT12 100uF 63V + VOUT1 APPROVED VICTOR K. PRODUCTION 2 E DESCRIPTION REVISION HISTORY REV TITLE: SCHEMATIC COUT11 4.7uF 100V COUT4 4.7uF 100V __ ECO 1 2 3 4 DEMO MANUAL DC2006A-A Schematic Diagram dc2006aafa 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. 1 2 3 A C33 1uF B 12.1K R34 100K R40 115k R44 4 3 2 1 R23 1Meg C18 1uF 16V 5 R46 10k Q12 MMBTA42 1 R50 8.66K C26 10nF C28 0.1uF D14 PDZ7.5B R3 3.32K 3 2 +VIN 1 2 B 1 FS RUN FB ITH SSFLT 6 7 8 9 1k R38 R32 0.1 C C C24 2.2uF + C19 15uF R47 0 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. CUSTOMER NOTICE PD3S160 D15 1 C31 2.2uF 0805 PZTA42 Q17 +VIN D SCALE = NONE HZ APPROVALS AUX VIN R42 OPT BIAS JP12 LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES. VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APP ENG. APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. 2.2uF 50V 1206 C21 3 2 1 D 4 2 3 +VIN VBIAS Figure 5. DC2006A-A Bias Circuitry SYNC_AUX SYNC ISENSE OC VCC Gate 10 3 4 3 Q16 FDC5612 2 1 T2 DRQ73-101-R D17 BAS516 2 LTC3805EMSE-5 U3 R45 402 R4 OPT GND 11 1 2 5 6 4 1 D16 PDZ12B R41 10K TECHNOLOGY 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only E DATE: N/A SIZE E LTC3862EUH-2 DEMO CIRCUIT 2006A-A Thursday, September 26, 2013 IC NO. SHEET 2 2 OF 2 REV. HIGH POWER, HIGH VOLTAGE STEP-UP CONVERTER TITLE: SCHEMATIC 2 4 A 1 2 3 4 DEMO MANUAL DC2006A-A Schematic Diagram dc2006aafa 7 DEMO MANUAL DC2006A-A DEMONSTRATION BOARD IMPORTANT NOTICE Linear Technology Corporation (LTC) provides the enclosed product(s) under the following AS IS conditions: This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not provided by LTC for commercial use. As such, the DEMO BOARD herein may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety measures typically found in finished commercial goods. As a prototype, this product does not fall within the scope of the European Union directive on electromagnetic compatibility and therefore may or may not meet the technical requirements of the directive, or other regulations. If this evaluation kit does not meet the specifications recited in the DEMO BOARD manual the kit may be returned within 30 days from the date of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY THE SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE. EXCEPT TO THE EXTENT OF THIS INDEMNITY, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES. The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user releases LTC from all claims arising from the handling or use of the goods. Due to the open construction of the product, it is the user's responsibility to take any and all appropriate precautions with regard to electrostatic discharge. Also be aware that the products herein may not be regulatory compliant or agency certified (FCC, UL, CE, etc.). No License is granted under any patent right or other intellectual property whatsoever. LTC assumes no liability for applications assistance, customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind. LTC currently services a variety of customers for products around the world, and therefore this transaction is not exclusive. Please read the DEMO BOARD manual prior to handling the product. Persons handling this product must have electronics training and observe good laboratory practice standards. Common sense is encouraged. This notice contains important safety information about temperatures and voltages. For further safety concerns, please contact a LTC application engineer. Mailing Address: Linear Technology 1630 McCarthy Blvd. Milpitas, CA 95035 Copyright (c) 2004, Linear Technology Corporation 8 dc2006aafa Linear Technology Corporation LT 0415 REV A * PRINTED IN USA 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 www.linear.com LINEAR TECHNOLOGY CORPORATION 2013