DEMO MANUAL DC2006A-B LTC3862-2 High Power, High Voltage Step-Up Converter Description Demonstration circuit 2006A-B is a multiphase high power, high voltage step-up DC/DC converter featuring two the LTC®3862-2 boost controllers. This demo board converts a 6V to 36V input voltage to a 120V output at up to 2.0A with two stages. The first stage converts the input voltage to 50V. The second stage converts the 50V to 120V and each stage uses one LTC3862-2. 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 DC2006A-B 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. 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. An onboard SEPIC power supply can provide 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 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 design and is useful in applications where the input voltage is always higher than the required gate drive voltage. 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 VALUE UNITS Minimum Input Supply Voltage 6 V Maximum Input Supply Voltage 36 V Output Voltage Range VIN = 6V to 36V, IOUT1 = 0A to 2.0A Typical switching frequency 120 ±2% V 200 kHz Typical Output Ripple (VOUT, 120V) ILOAD = 1.0A 150 mV Efficiency Typical (VOUT, 120V, VIN 14V) See Figure 3 93 % dc2006abfa 1 DEMO MANUAL DC2006A-B 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. 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 120V. If there is no output, temporarily disconnect the load to make sure that the load is not set too high. Take all the precautions needed to work with high 120V output voltage. 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 LTC3862-2 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 LTC3862-2 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 LTC3862-2 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 0Ω 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-B efficiency reaches 92% at 12V input voltage generating 120V at 2.0A and 93% at 14V input voltage, see Figure 3. However, output current should be decreased at input voltages below 11V to reduce thermal stress on the converter. Figure 4 demonstrates maximum output current, as function of input voltage, assuming 120V output voltage. All measurements were conducted at room temperature, natural convection cooling with no air flow. 2 dc2006abfa DEMO MANUAL DC2006A-B Quick Start Procedure 40V DC POWER SUPPLY – + + – + + – – VOUT LOAD Figure 1. Proper Measurement Equipment Setup dc2006abfa 3 DEMO MANUAL DC2006A-B Quick Start Procedure GND VIN Figure 2. Measuring Input or Output Ripple 94 93 92 (%) 91 90 89 88 12VIN 14VIN 24VIN 36VIN 87 86 0.5 0.7 0.9 1.1 1.3 (A) 1.5 1.7 1.9 DC2006 F03 Figure 3. DC2006A-B, Efficiency vs Load MAXIMUM LOAD CURRENT (A) 2.5 2 1.5 1 0.5 0 6 7 8 9 10 INPUT VOLTAGE (V) 11 12 DC2006AB F04 Figure 4. Load Current Derating at Low Input Voltages 4 dc2006abfa DEMO MANUAL DC2006A-B Quick Start Procedure Figure 4. Installing Through-Hole MOSFETs and Heat Sink on Second Stage; AAVID TECH., 578622B03200G Heat Sink is Used dc2006abfa 5 DEMO MANUAL DC2006A-B Parts List ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Required Circuit Components 1 2 CC1, CC2 Cap., NPO 220pF, 25V, 5%, 0603 MURATA, CGM1885C1H221JA16D 2 1 CIN1 Cap., Alum 220µF, 50V 12.8 × 12.8 SUN ELECT., 50CE220KX 3 6 CIN3-CIN8 Cap., X5R 10uF, 50V, 20%, 1812 TDK, CKG45NX5R1H106M 3 7 COUT1-COUT4, COUT7, COUT15, COUT16 Cap., X7S 4.7µF, 100V, 10%, 1812 TDK, C4532X7S2A475K 4 5 COUT8-COUT11, COUT14 Cap., X7T 0.47µF, 450V, 1812 TDK C4532X7T2W474M 5 2 COUT5, COUT6 Cap., Alum. Elect. 100µF, 63V SUN ELECT., 63CE100KX 6 2 COUT12, COUT13 Cap., Alum. 100µF, 160V, 20% PANASONIC EEV-EB2C101M 6 5 C1, C8, C10, C17, C28 Cap., X7R 0.1µF, 25V, 10%, 0603 AVX, 06033C104KAT2A 7 2 C6, C15 Cap., X7R 0.47µF, 16V, 10%, 0603 AVX, 0603YC474KAT2A 8 2 C2, C12 Cap., NPO 1nF, 25V, 5%, 0603 AVX, 06033A102JAT2A 9 8 C3, C7, C9, C11, C16, C20, C22, C26 Cap., X7R 10nF, 25V, 5%, 0603 AVX, 06033C103JAT2A 10 3 C4, C13, C33 Cap., X5R 1µF, 50V, 10%, 1206 MURATA, GRM188R61H105KAAL 11 1 C18 Cap., X5R 1µF, 25V, 10%, 0603 AVX,06033D105KAT2A 12 1 C19 Cap., Polymer, 15uF, 25V Panasonic,25TQC15MYFB 13 1 C21 Cap., X7S 2.2µF, 100V, 10%, 1206 TDK, C3216X7S2A225M 14 2 C24, C31 Cap., X7R 2.2µF, 25V, 20%, 0805 AVX, 08053C225MAT2A 15 2 C5, C14 Cap., X5R 4.7µF, 50V, 10%, 1206 TAIYO YUDEN, UMK316BJ475KL-T 16 4 D1, D4, D5, D8 Diode Schottky, SOD-323 DIODES/ZETEX, BAT760-7 17 2 D2, D11 Diode Schottky 8Amp 100V VISHAY, V8P10-M3 18 2 D12, D13 Super Barrier Rectifier, 10A, 200V PWRD15 DIODES/ZETEX, SBR10U200P5-13 19 1 D16 Volt. Reg. Diode 12V SOD-323 NXP SEMI., PDZ12B 20 1 D15 Diode Schottky 1A, 60V DIODES INC. PD3S160-7 21 1 D14 Diode Zener 7.5V NXP/ PHILIPS PDZ7.5B 22 1 D17 Diode, 100V, SOD523 NXP/ PHILIPS BAS516 23 4 Q3, Q4, Q7, Q8 NPN/PNP Transistor NXP SEMI., PBSS4140DPN 23 2 Q2, Q6 MOSFET 75V INFINEON, BSC036NE7NS3G 24 2 Q10, Q14 MOSFET 150V INFINEON, BSC190N15NS3G 25 1 Q16 MOSFET, 60V FAIRCHILD, FDC5612 26 1 Q17 Transistor, SOT223 NXP SEMI., PZTA42 27 1 Q12 Transistor, SOT-23 DIODES, MMBTA42-7-F 28 2 L1, L2 INDUCTOR, 10µH COILCRAFT, SER2918H-103KL 29 2 L6, L7 INDUCTOR, 100µH COILCRAFT, PCV-2-104-05L 30 1 T2 Dual Winding Inductor, 100µH COOPER BUSSMANN, DRQ73-101-R 31 7 R37, R14, R35, R47, R21, R22, R39 Res., Chip 0Ω, Jumper 0603 VISHAY, CRCW06030000Z0EA 32 4 RS2, RS3, RS6, RS8 Res., 0.004Ω, 1/2W, 1%, 2010 VISHAY, WSL20104L000FEA 33 1 R1 Res., Chip 84.5k, 1%, 0805 VISHAY, CRCW080584K5FKEA 34 4 R2, R12, R20, R29 Res., Chip 10Ω, 5%, 0603 VISHAY, CRCW060310R0JNEA 35 1 R45 Res., Chip 402Ω, 1%, 0603 VISHAY,CRCW0603402RFKEA 36 3 R5, R19, R9 Res., Chip 21k, 1%, 0603 VISHAY, CRCW060321K0FKEA 6 dc2006abfa DEMO MANUAL DC2006A-B Parts List ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER 37 2 R7, R24 Res., Chip 66.5k, 1%, 0603 VISHAY, CRCW060366K5FKEA 38 2 R10, R27 Res., Chip 11.8k, 1%, 0603 VISHAY, CRCW060311K8FKEA 39 1 R11 Res., Chip 475k, 1%, 1206 VISHAY, CRCW1206475KFKEA 39 1 R16 Res., Chip 665k, 1%, 0805 VISHAY, CRCW0805665KFKEA 40 1 R26 Res., Chip 31.6k, 1%, 0603 VISHAY, CRCW06031K6FKEA 39 1 R28 Res., Chip 1.15M, 1%, 1206 VISHAY, CRCW12061M15FKEA 40 1 R34 Res., Chip 100k, 1%, 0603 VISHAY, CRCW0603100KFKEA 41 2 R46, R31 Res., Chip 10k, 1%, 0603 VISHAY, CRCW060310K0FKEA 42 1 R32 Res., Chip 0.1Ω, 1%, 0603 VISHAY, WSL0603R1000FEA 43 1 R50 Res., Chip 8.66k, 1%, 0603 VISHAY, CRCW06038K66FKEA 44 1 R23 Res., Chip 1M, 1%, 0603 VISHAY, CRCW06031M00FKEA 45 1 R44 Res., Chip 12.1k, 1%, 0603 VISHAY,,CRCW060312K1FKEA 46 1 R3 Res., Chip 3.32k, 1%, 1206 VISHAY,CRCW12063K32FKEA 47 1 R41 Res., Chip 10k, 1%, 1206 VISHAY,CRCW120610K0FKEA 48 1 R40 Res., Chip 115k, 1%, 0603 VISHAY, CRCW0603115K0FKEA 49 1 R38 Res., Chip 3.01k, 1%, 0603 VISHAY, CRCW06033K01FKEA 50 2 U1, U2 IC., LTC3862EUH-2#PBF, 5mm × 5mm, QFN LINEAR TECH, LTC3862EUH-2#PBF 51 1 U3 IC., LTC3805-5 LINEAR TECH, LTC3805EMSE-5#TRMPBF Additional Demo Board Circuit Components 1 R4, R8, R15, R25, R26, R30, R42 OPT 2 C16, C29, C30 OPT 3 D3, D6, D7, D10 OPT 4 Q1, Q5, Q9, Q13 OPT 5 HS1, HS2 OPTIONAL Heat Sink AAVID TECH., 578622B03200G E1-E10 TESTPOINT, TURRET, .094" MILL-MAX, 2501-2-00-80-00-00-07-0 Hardware 1 10 2 4 J1, J2, J3, J4 CONN, BANANA JACK, KEYSTONE-575-4 KEYSTONE 575-4 3 1 JP1 JMP, 3 PIN, 1 ROW, 0.079" SULLINS, NRPN031PAEN-RC 4 1 JP2 JMP, 3 PIN, 2 ROW, 0.079" SULLINS, NRPN032PAEN-RC 6 4 MTGS at 4 corners STANDOFF, NYLON .5 1/2" KEYSTONE, 8833(SNAP-ON) 5 2 XJP1, XJP2 SHUNT, .079" CENTER SAMTEC, 2SN-BK-G 6 2 J1, J2 Broaching Studs, .625 × 0.250 PennEngineering, KFH-032-10ET 7 2 J1, J2 Nut Brass, #10-32 M/S BR PL ANY 10-32 8 2 J1, J2 Ring, Lug #10 KEYSTONE, 8205 9 2 J1, J2 Washer #10, Tin Plated Brass ANY #10EXT BZ TN dc2006abfa 7 1 2 3 4 GND SYNC2 GND SYNC1 GND 120° J2 E7 E8 E5 E6 A JP7 BLANK + CIN1 220uF 50V JP3 BLANK R22 0 C29 OPT SYNC_AUX CC2 220pF C16 10nF R21 0 R14 0 R13 OPT CC1 220pF 10nF C7 R9 21k JP6 PHASE E10 JP2 PHASE 3 2 1 +VIN 325ns 250ns** 175ns 3 2 1 GND 180° 120° 1.66 1.0** 0.625 A TP1 C22 C30 OPT CLKOUT2 CIN2 OPT JP5 DMAX 10 9 8 7 6 5 4 3 2 1 24 23 JP9 DMAX CIN3 10uF 50V JP4 SLOPE R39 0 R35 0 R11 475k VOUT1 R37 0 0.47uF R10 11.8k C6 R7 66.5k 0.47uF 10nF R31 10K R28 1.15Meg R27 11.8k C15 R24 66.5k VOUT2 R26 31.6K + JP8 SLOPE 3 2 1 6V - 36V J1 180° 3 2 1 325ns 250ns** 175ns 3 2 1 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 B D8 BAT760 5 2 5 2 R8 4 1 4 1 R15 OPT 4 1 OPT C17 0.1uF C10 0.1uF C8 0.1uF C1 0.1uF R2 10 C11 10nF R20 10 4 C3 10nF 4 Q1 OPT C9 10nF C20 10nF R29 10 4 Q13 OPT RS5 OPT Q9 OPT R12 10 4 Q5 OPT RS1 OPT 4 4 RS7 OPT C RS6 4m RS4 OPT C G1 4 S1 RS2 4m Q10 4 D2 +VIN Q14 GND J8 J7 6V - 36V +VIN RS8 4m S2 HS1 OPT G2 HEAT SINK RS3 4m D1 +VIN +VIN Q6 BSC036NE7NS3G Q2 BSC036NE7NS3G 100uH OPT OPT 100uH L7 L4 L3 L6 10uH L2 10uH L1 HS2 OPT 3 3 COUT14 0.47uF 450V COUT7 4.7uF 100V CUSTOMER NOTICE 3 D13 SBR10U200P D7 OPT 3 D6 OPT D12 SBR10U200P 3 D11 V8P10 D3 OPT 3 3 3 D10 OPT D2 V8P10 D COUT8 0.47uF 450V COUT1 4.7uF 100V D THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. COUT10 0.47uF 450V COUT3 4.7uF 100V SCALE = NONE VICTOR K. HZ APPROVALS COUT9 0.47uF 450V 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 5. DC2006A-B Dual Stage Boost Converter R30 OPT 4 1 R25 OPT 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 OPT +VIN C5 4.7uF C4 1uF OFF Q3 INTVCC PBSS4140DPN D1 BAT760 CIN10 OPT ON CIN9 OPT RUN1 JP11 VBIAS 1 2 3 CIN8 10uF 50V C14 4.7uF 1nF INTVCC1 C12 R19 21k R16 665K VOUT1 INTVCC C2 R1 84.5k +VIN CIN7 10uF 50V B 6 3 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 5 1 2 3 5 1 2 3 1 5 5 5 1 2 3 3 5 1 2 3 5 2 BSC190N15NS3G 6 3 6 3 6 3 5 1 2 3 4 5 1 2 3 1 2 3 1 2 3 6 BSC190N15NS3G 1 E9 3 G1 +VIN 2 S1 25 4 D1 HEAT SINK G2 6 S2 5 D2 8 +VIN VOUT2 VOUT1 COUT6 100uF 63V + + COUT13 100uF 160V R18 OPT 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 7-3-13 DATE: N/A SIZE E LTC3862EUH-2 DEMO CIRCUIT 2006A-B Wednesday, September 25, 2013 IC NO. SHEET 1 2 OF 2 REV. HIGH POWER, HIGH VOLTAGE STEP-UP CONVERTER TECHNOLOGY + COUT12 100uF 160V + VOUT1 APPROVED VICTOR K. PRODUCTION 2 E DESCRIPTION REVISION HISTORY REV TITLE: SCHEMATIC COUT11 0.47uF 450V COUT4 4.7uF 100V __ ECO 1 2 3 4 DEMO MANUAL DC2006A-B Schematic Diagram dc2006abfa 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 1 Q12 MMBTA42 R50 8.66K C26 10nF C28 0.1uF D14 PDZ7.5B R3 3.32K 3 2 +VIN 1 2 B U3 402 1 FS RUN FB ITH SSFLT SYNC_AUX SYNC ISENSE OC VCC Gate 1k R38 R32 0.1 C 2.2uF 50V 1206 C21 C + C19 15uF R42 BIAS JP12 OPT AUX VIN THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. CUSTOMER NOTICE C24 2.2uF R47 0 3 2 1 +VIN 1 C31 2.2uF 0805 PZTA42 Q17 D SCALE = NONE HZ APPROVALS 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. PD3S160 D15 VBIAS D 4 2 3 +VIN Figure 6. DC2006A-B Bias Circuitry 6 7 8 9 10 3 4 3 Q16 FDC5612 2 1 T2 DRQ73-101-R D17 BAS516 2 LTC3805EMSE-5 R45 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-B 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-B Schematic Diagram dc2006abfa 9 DEMO MANUAL DC2006A-B 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 © 2004, Linear Technology Corporation 10 Linear Technology Corporation dc2006abfa 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