DEMO MANUAL DC2143A-B LTM4677 Dual 18A or Single 36A Module Regulator with Digital Power System Management 3x LTM4677; 108A Description Demonstration circuit 2143A-B is a high efficiency, high density, Module regulator with 4.5V to 16V input range. The output voltage is adjustable from 0.5V to 1.8V, and it can supply 108A maximum load current. The demo board has three LTM(R)4677 Module(R) regulators, and the LTM4677 is a dual 18A or single 36A step-down regulator with PMBus power system management. Please see the LTM4677 data sheet for more detailed information DC2143A-B powers up to default settings and produces power based on configuration resistors without the need for any serial bus communication. This allows easy evaluation of the DC/DC converter. To fully explore the extensive power system management features of the part, download the GUI software LTpowerPlayTM onto your PC and use LTC's I2C/SMBus/PMBus dongle DC1613A to connect to the board. LTpowerPlay allows the user to reconfigure the part on the fly and store the configuration in EEPROM, view telemetry of voltage, current, temperature and fault status GUI Download - The software can be downloaded from: http://www.linear.com/ltpowerplay For more details and instructions of LTpowerPlay, please refer to LTpowerPlay GUI for LTM4677 Quick Start Guide in this document. Design files for this circuit board are available at http://www.linear.com/demo/DC2143A-B L, LT, LTC, LTM, Linear Technology, the Linear logo and Module are registered trademarks and LTpowerPlay is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. Figure 1. 3x LTM4677; 108A DC2143A-B Demo Circuit dc2143abfa 1 DEMO MANUAL DC2143A-B Performance Summary PARAMETER Specifications are at TA = 25C CONDITION VALUE Input Voltage Range 4.5V to 16V Output Voltage, VOUT0 VIN = 4.5V to 16V, IOUT0 = 0A to 108A 0.5V to 1.8V, Default: 1V Maximum Output Current, IOUT0 VIN = 4.5V to 16V, VOUT = 0.5V to 1.8V 108A Typical Efficiency VIN = 12V, VOUT = 1.0V, IOUT = 108A 81.5% Default Switching Frequency 500kHz Quick Start Procedure Table 1. LTM4677 Demo Cards for Up to 144A Point-of-Load Regulation MAXIMUM OUTPUT CURRENT NUMBER OF OUTPUT VOLTAGES NUMBER OF LTM4677 MODULE REGULATORS ON THE BOARD DEMO BOARD NUMBER Dual 18A 2 1 DC2066A 72A 1 2 DC2143A-A 108A 1 3 DC2143A-B 144A 1 4 DC2143A-C Demonstration circuit 2143A-B is easy to set up to evaluate the performance of the LTM4677EY. Refer to Figure 2 for the proper measurement equipment setup and follow the procedure below. 1.With power off, connect the input power supply to VIN (4.5V to 16V) and GND (input return). 2.Connect the 1.0V output load between VOUT and GND (Initial load: no load). 3. Connect the DVMs to the input and outputs. Set default switch position: SW1: ON; SW2: ON. 4. Turn on the input power supply and check for the proper output voltages. VOUT0 should be 1.0V 1%. 5.Once the proper output voltages are established, adjust the loads within the operating range and observe the output voltage regulation, ripple voltage and other parameters. 2 6.Connect the dongle and control the output voltages from the GUI. See LTpowerPlay GUI for the LTM4677 Quick Start Guide for details. Note: When measuring the output or input voltage ripple, do not use the long ground lead on the oscilloscope probe. See Figure 3 for the proper scope probe technique. Short, stiff leads need to be soldered to the (+) and (-) terminals of an output capacitor. The probe's ground ring needs to touch the (-) lead and the probe tip needs to touch the (+) lead. Connecting a PC to DC2143A-B You can use a PC to reconfigure the power management features of the LTM4677 such as: nominal VOUT, margin set points, OV/UV limits, temperature fault limits, sequencing parameters, the fault log, fault responses, GPIOs and other functionality. The DC1613A dongle may be plugged when VIN is present. dc2143abfa DEMO MANUAL DC2143A-B Quick Start Procedure + - 1m LOAD (0A~108A) + - VOUT0 - + + + - - VIN 4.5V to 16V Figure 2. Proper Measurement Equipment Setup + VOUT - COUT GND Figure 3. Measuring Output Voltage Ripple dc2143abfa 3 DEMO MANUAL DC2143A-B Quick Start Procedure Input Power Supply USB Cable VIN 12-Pin (J7) USB to I2C/PMBus Dongle DC1613A Connector LTM4677 Demo Board DC2143A-B VOUT0 Load Figure 4. Demo Setup with PC 100 95 VIN = 12V fSW = 500kHz EFFICIENCY (%) 90 85 80 75 70 1VOUT 1.8VOUT 65 60 0 10 20 30 40 50 60 70 80 90 100 110 LOAD CURRENT (A) DC2143AB F05 Figure 5. Efficiency vs Load Current for VOUT = 1V and VOUT = 1.8V at VIN = 12V, fSW = 500kHz VOUT0 (20MHz BW) [20mV/DIV] VOUT0 (20MHz BW) [5mV/DIV] 54A TO 81A LOAD STEP t(20s/DIV) DC2143AC F06 Figure 6. Output Voltage VOUT0 vs Load Current at VIN = 12V, VOUT0 = 1V, fSW = 500kHz 4 t(20s/DIV) DC2143AC F07 Figure 7. Output Voltage Ripple at VIN = 12V, VOUT0 = 1V, IOUT0 = 108A, fSW = 500kHz dc2143abfa DEMO MANUAL DC2143A-B Quick Start Procedure Figure 8. Thermal Performance at VIN = 12V, VOUT0 = 1V, IOUT0 = 108A, TA = 23.8C, Air Flow 400LFM dc2143abfa 5 DEMO MANUAL DC2143A-B LTpowerPlay Software GUI LTpowerPlay is a powerful Windows based development environment that supports Linear Technology power system management ICs, including the LTM4677, LTC3880, LTC3883, LTC2974 and LTC2978. The software supports a variety of different tasks. You can use LTpowerPlay to evaluate Linear Technology ICs by connecting to a demo board system. LTpowerPlay can also be used in an offline mode (with no hardware present) in order to build a multichip configuration file that can be saved and reloaded at a later time. LTpowerPlay provides unprecedented diagnostic and debug features. It becomes a valuable diagnostic tool during board bring-up to program or tweak the power management scheme in a system, or to diagnose power issues when bringing up rails. LTpowerPlay utilizes the DC1613A USB-to-SMBus controller to communicate with one of many potential targets, including the LTM4677, the LTC3880 and the LTC3883's demo system, or a customer board. The software also provides an automatic update feature to keep the software current with the latest set of device drivers and documentation. The LTpowerPlay software can be downloaded from: http://www.linear.com/ltpowerplay To access technical support documents for LTC Digital Power Products visit Help. View online help on the LTpowerPlay menu. Figure 9. LTpowerPlay Main Interface 6 dc2143abfa DEMO MANUAL DC2143A-B LTpowerPlay Quick Start Procedure The following procedure describes how to use LTpowerPlay to monitor and change the settings of LTM4677. 1.Download and install the LTpowerPlay GUI: http://www.linear.com/ltpowerplay 2.Launch the LTpowerPlay GUI. a. The GUI should automatically identify the DC2143A-B. The system tree on the left hand side should look like this: b.A green message box shows for a few seconds in the lower left hand corner, confirming that LTM4677 is communicating: Then, click the "W" (PC to RAM) icon to write these register values to the LTM4677. After finishing this step, you will see the output voltage will change to 1.5V. If the write is successful, you will see the following message: c. In the Toolbar, click the "R" (RAM to PC) icon to read the RAM from the TM4677. This reads the configuration from the RAM of LTM4677 and loads it into the GUI. e. You can save the changes into the NVM. In the tool bar, click "RAM to NVM" button, as following d. If you want to change the output voltage to a different value, like 1.5V. In the Config tab, type in 1.5 in the VOUT_COMMAND box, like this: f. Save the demo board configuration to a (*.proj) file. Click the Save icon and save the file. Name it whatever you want. dc2143abfa 7 DEMO MANUAL DC2143A-B Parts List ITEM QTY REFERENCE Required Circuit Components 1 14 CIN1, CIN2, CIN4, CIN5, CIN6, CIN7, CIN8, CIN9, CIN10, CIN11, CIN12, CIN13, CIN14, CIN15 2 1 CIN3 3 22 COUT1, COUT2, COUT3, COUT6, COUT7, COUT9, COUT10, COUT11, COUT12, COUT13, COUT14, COUT17, COUT18, COUT20, COUT21, COUT22 COUT23, COUT24, COUT25, COUT27, COUT29, COUT30 4 8 COUT4, COUT5, COUT8, COUT15, COUT16, COUT19, COUT26, COUT28, 5 1 C3 6 1 C4 7 4 C5, C12, C33, C34 8 1 C32 9 1 C64 10 2 C65, C68 11 1 C66 12 1 C67 13 1 C69 14 1 C70 15 2 D1, D2 16 1 D3 17 1 D8 18 1 Q2 19 2 Q3, Q4 20 2 Q11, Q12 21 1 Q19 22 24 R2, R4, R18, R25, R26, R30, R32, R47, R48, R50, R56, R58, R60, R72, R74, R104, R120, R121, R122, R131, R135, R143 23 15 R6, R7, R8, R9, R10, R11, R12, R15, R35, R36, R39, R64, R78, R116, R130 24 1 R14 25 4 R16, R41, R125, R129 26 1 R19 27 4 R49, R51, R53, R54 28 2 R85, R124 29 1 R86 30 1 R105 31 1 R106 32 1 R107 33 2 R108, R118 34 1 R109 35 1 R110 36 2 R111, R115 37 1 R112 38 1 R113 39 1 R114 40 1 R117 8 PART DESCRIPTION MANUFACTURER/PART NUMBER CAP., X5R, 10F, 35V, 10%,1210 MURATA, GRM32ER6YA106KA12L CAP., 150F, 35V, ALUMINUM ELECTR. CAP., X5R, 100F, 6.3V, 20% 1210 SUN ELECT., 35CE150AX MURATA, GRM32ER60J107ME20K POSCAP, 470F, 2.5V, SP-CAP, D3L PANASONIC, EEF-LX0E471E4 CAP., X7R, 220pF, 16V, 10%, 0603 CAP., X7R, 6800pF, 16V, 10%,0603 CAP., X5R, 0.01F, 16V, 10%,0603 CAP., X5R, 0.1F, 16V, 10%,0603 CAP., X5R, 4.7F, 25V,10%, 0603 CAP., X7R, 1F, 25V,10%, 1206 CAP., X5R, 0.22F, 25V,10%, 0805 CAP., X7R, 0.1F, 25V,10%, 1206 CAP., X7R, 150pF, 25V,10%, 0603 CAP., X5R, 1F, 25V,10%, 0805 SMT Chip LED, GREEN SMT Chip LED, RED DIODE SCHOTTKY 20V 500MA SOD882 2-PIN MOSFET P-CH 20V 0.58A SOT-23 MOSFET N-CH 60V 115MA SOT-23 MOSFET N-CH 30V 63A TO252 MOSFET P-CH 30V 3.5A SOT-23 RES., CHIP, 0, 1%, 0603 AVX, 0603YC221KAT2A AVX, 0603YC682KAT2A AVX, 0603YD103KAT2A MURATA, GRM188R61C104KA01D MURATA, GRM188R61E475KE11D MURATA, GRM31MR71E105KA01L AVX, 08053D224KAT2A AVX, 12063C104KAT2A AVX, 06033C151KAT2A MURATA, GRM216R61E105KA12D Wurth Elektronik, 150060GS75000 Wurth Elektronik, 150060SS75000 NXP SEMI., PMEG2005AEL,315 VISHAY, SI2365EDS-T1-GE3 FAIRCHILD, 2N7002K VISHAY, SUD50N04-8M8P-4GE3 DIODES INC., DMP3130L-7 VISHAY CRCW06030000Z0EA RES., CHIP, 10k, 1%, 0603 VISHAY CRCW060310K0FKEA RES., CHIP, 2k, 1%, 0603 RES., CHIP, 10, 1%, 0603 RES., CHIP, 787, 1%, 0603 RES., CHIP, 0, 1%, 2010 RES., CHIP, 200, 1%, 0603 RES., CHIP, 127, 1%, 0603 RES., CHIP, 681k, 1%, 0603 RES., CHIP, 3.3, 1%, 0603 RES., CHIP, 82.5, 1%, 0603 RES., CHIP, 0.01, 1%, 2010 RES., CHIP, 100k, 1%, 0603 TRIMMING POTENTIOMETER, 5k RES., CHIP, 20k, 1%, 0603 RES., CHIP, 100, 1%, 0603 RES., CHIP, 1.4k, 1%, 0603 RES., CHIP, 154k, 1%, 0603 RES., CHIP, 2, 1%, 0603 VISHAY CRCW06032K00FKEA VISHAY CRCW060310R0FKEA VISHAY CRCW0603787RFKEA VISHAY CRCW20100000Z0EF VISHAY CRCW0603200RFKEA VISHAY CRCW0603127RFKEA VISHAY CRCW0603681KFKEA VISHAY CRCW06033R30FKEA VISHAY CRCW060382R5FKEA VISHAY, WSL2010R0100FEA VISHAY CRCW0603100KFKEA BOURNS, 3386P-1-502LF VISHAY CRCW060320K0FKEA VISHAY CRCW0603100RFKEA VISHAY CRCW06031K40FKEA VISHAY CRCW0603154KFKEA VISHAY CRCW06032R00FKEA dc2143abfa DEMO MANUAL DC2143A-B Parts List ITEM QTY REFERENCE 41 1 R123 42 2 R134, R144 43 1 R141 44 3 U1, U2, U3 45 1 U6 46 1 U7 47 1 U8 48 1 U9 49 2 R40, R42 50 2 R65, R66 Additional Demo Board Circuit Components 1 0 CIN16, CIN17, CIN18, CIN19, 2 0 COUT31, COUT32, COUT33, COUT35, COUT36, COUT37 3 0 COUT34, COUT38 4 0 COUT39, COUT40, COUT41, COUT42, 5 COUT43, COUT44, COUT45, COUT46 6 0 R80 7 0 R79 8 0 U4 9 0 C1, C2, C6, C8, C9, C10, C11, C13, C14, 10 C15, C16, C17, C18, C19, C20 11 0 C7 12 0 D4, D5 13 0 R1, R3, R5, R13, R17, R20, R21, R22, R23, R24, R27, R28, R29, R31, R33, R34, R37, R38, R43, R44, R45, R46, R57, R59, R61, R62, R63, R67, R68, R69, R70, R71, R73, R75, R76, R77, R81, R82, R83, R84, R119, R126, R127, R128, R132, R133, R136, R137, R139, R140, R142 14 0 R102, R103 15 0 R138 Hardware: For Demo Board Only 1 23 E2-E19, E21-E25 2 2 JP1, JP2 3 2 JP1, JP2 4 4 J1, J2, J3, J4 5 8 J1, J2, J3, J4 (x2) 6 4 J1, J2, J3, J4 7 4 J1, J2, J3, J4 8 2 J5, J6 9 1 J7 10 2 J10, J11 11 1 J12 12 1 J13 13 1 J14 14 2 SW1, SW2 15 4 (STAND-OFF) 16 1 17 2 PART DESCRIPTION RES., CHIP, 1M, 1%, 0603 RES., CHIP, 4.99k, 1%, 0603 RES., CHIP, 15.8k, 1%, 0603 IC, LTM4677EY IC., LT1129CS8-5, S8 IC., LTC6992-1, S6-TSOT IC., LT1803IS5, S5-TSOT IC., EEPROM 2KBIT 400KHZ 8TSSOP RES., CHIP, 1.65k, 1%, 0603 RES., CHIP, 2.43k, 1%, 0603 MANUFACTURER/PART NUMBER VISHAY CRCW06031M00FKEA VISHAY CRCW06034K99FKEA VISHAY CRCW060315K8FKEA LINEAR TECH., LTM4677EY#PBF LINEAR TECH. LT1129CS8-5#PBF LINEAR TECH. LTC6992CS6-1#PBF LINEAR TECH. LT1803IS5#PBF MICROCHIP, 24LC025-I/ST VISHAY CRCW06031K65FKEA VISHAY CRCW06032K43FKEA CAP., OPTIONAL 1210 CAP., OPTIONAL 1210 OPTIONAL, D3L OPTIONAL D3L RES., CHIP,OPTIONAL, 0603 RES., CHIP, OPTIONAL, 0603 IC, OPTIONAL OPTIONAL 0603 OPTIONAL 0603 DIODE SOD323 OPTIONAL RES., OPTIONAL 0603 RES., OPTIONAL 2512 RES., OPTIONAL 1206 TESTPOINT, TURRET, .062" CONN., HEADER, 1X3, 2mm SHUNT, 2mm STUD, TEST PIN NUT, BRASS 10-32 RING, LUG #10 WASHER, TIN PLATED BRASS JACK, BANANA CONN HEADER 12POS 2MM STR DL PCB CONN, BNC, 5PINS CONN RECEPT 2MM DUAL R/A 14POS (F) HEADER, 14POS 2MM R/A GOLD (M) HEADER, 4 PINS, SHROUDED SWITCH, SLIDE DPDT 300MA 6V STAND-OFF, NYLON 0.50" Tall, SNAP ON FAB, PRINTED CIRCUIT BOARD STENCIL (TOP AND BOTTOM) MILL-MAX, 2308-2-00-80-00-00-07-0 Wurth Elektronik, 62000311121 Wurth Elektronik, 60800213421 PEM, KFH-032-10 ANY, #10-32M/S KEYSTONE, 8205 ANY, #10 KEYSTONE, 575-4 FCI, 98414-G06-12ULF CONNEX, 112404 SULLINS, NPPN072FJFN-RC MOLEX, 87760-1416 HIROSE, DF3A-4P-2DSA C&K., JS202011CQN WURTH ELEKTRONIK, 702935000 DEMO CIRCUIT 2143A STENCIL DC2143A dc2143abfa 9 A B C * E8 J4 J3 E6 E4 J2 J1 E3 GND0_SNS GND VOUT0 1V / 105A VOUT0_SNS GND GND 4.5V - 16V VIN VIN 5 CIN2 10uF 1210 R25 0 R18 CIN1 10uF 1210 0 + + VOUT0 CIN4 10uF 1210 C3 220pF CIN5 10uF 1210 COUT9 100uF 1210 VOSNS0- R4 0 P5 P4 OPT P3 COUT11 100uF 1210 R17 OPT 0805 R13 COUT10 100uF 1210 CIN7 10uF 1210 VOSNS0+ R14 2K C4 6.8nF COMP0 CIN6 10uF 1210 A1 A2 A3 B1 B2 B3 C1 C2 C3 D1 D2 D3 E9 D9 E10 D10 D8 E8 C5 D5 F2 F1 E2 E1 A5 B10 F11 F12 A11 A12 B11 B12 C11 C12 D11 D12 E12 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOSNS0- VOSNS0+ VORB0- VORB0+ COMP0b COMP0a TSNS0b TSNS0a ISNS0a+ ISNS0b+ ISNS0aISNS0b- SNUB0 SW0 VINL VINL VINH0 VINH0 VINH0 VINH0 VINH0 VINH0 VINH0 VINH0 VINH0 0.035 VIA TESTPOINTS 4 * WHEN VIN < 5.75V, SHORT INTVCC TO VIN WITH R5,R34, R61. 1. ALL RESISTORS ARE 0603. ALL CAPACITORS ARE 0603. NOTE: UNLESS OTHERWISE SPECIFIED COUT46 + COUT8 OPT 470uF 2.5V 2.5V C6 OPT CIN3 150uF 35V VIN 4 H12 J11 J12 K11 K12 L11 L12 M11 M12 VINH1 VINH1 VINH1 VINH1 VINH1 VINH1 VINH1 VINH1 VINH1 P1 L10 SW1 R1 0805 OPT M5 SNUB1 G2 G1 ISNS1aISNS1b- K5 R2 0 U1 R3 OPT P2 COMP0 3 LTM4677EY TSNS1b H2 H1 ISNS1a+ ISNS1b+ J5 TSNS1a H8 COMP1a J9 VORB1 J8 COMP1b H9 C2 OPT C1 OPT 0 R26 3 A4 A6 A7 A8 A9 A10 B4 B5 B6 B7 B8 B9 C4 C6 C7 C8 C9 D4 D7 E3 F3 F10 G3 G10 G11 G12 H3 H10 J4 J10 K4 K7 K8 K9 L4 L5 L6 L7 L8 L9 M4 M6 M7 M8 M9 M10 GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND VOSNS1 VOSNS0+ J1 J2 J3 K1 K2 K3 L1 L2 L3 M1 M2 M3 SYNC VDD33 INTVCC INTVCC SCL SDA GPIO0B E6 D6 E4 H6 G6 H5 G5 H4 G4 J6 F6 F5 K6 RUN0 ALERTB E5 F4 SHARE_CLK H7 R24 (OPT) R23 (OPT) R22 (OPT) R21 (OPT) 787 (OPT) R8 10K R19 R7 10K R5 COUT2 100uF 1210 R20 R120 0 R6 10K COUT1 100uF 1210 SYNC COUT45 OPT 2.5V E7 J7 F9 G9 + 2 R9 10K OPT THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 2 VOUT0 + R11 10K COUT4 470uF 2.5V R15 10K SCALE = NONE HZ JIAN L. PCB DES. APP ENG. APPROVALS R10 10K VIN COUT3 100uF 1210 LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. CUSTOMER NOTICE VTRIM1CFG VOUT1CFG VTRIM0CFG VOUT0CFG FSWPHCFG ASEL VDD25 RUN1 RUN0 WP GPIO1 GPIO0 SDA SCL ALERT SHARE_CLK VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 SGND SGND SGND SGND G7 G8 F7 F8 DNC DNC DNC DNC C10 E11 H11 K10 + RUN0 COUT6 100uF 1210 2 2 GPIO0B SDA SCL ALERTB LTM4677EY VDD25 DATE: 1 DEMO CIRCUIT 2143A-B Tuesday, January 19, 2016 IC NO. DATE www.linear.com 11-25-15 SHEET 1 1 OF 6 REV. LTC Confidential-For Customer Use Only Fax: (408)434-0507 E7 VDD33 INTVCC Simon T. APPROVED 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 C5 10nF R16 10 SHARE_CLK SYNC E5 E2 PROUCTION TECHNOLOGY OFF 5 ON 1 DESCRIPTION REVISION HISTORY HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN Module REGULATOR WITH DIGITAL POWER MANAGEMENT SIZE B COUT7 100uF 1210 SW1 RUN0 REV TITLE: SCHEMATIC R12 10K COUT5 470uF 2.5V __ ECO 4 1 10 6 3 D 5 A B C D DEMO MANUAL DC2143A-B Schematic Diagram dc2143abfa A B C D 5 VOSNS0- VOSNS0+ + CIN8 10uF 1210 COUT43 OPT 2.5V VIN 470uF 2.5V CIN10 10uF 1210 + COUT19 VOUT0 C10 OPT CIN9 10uF 1210 COUT20 100uF 1210 COMP0 CIN11 10uF 1210 COUT21 100uF 1210 C11 OPT P10 P9 OPT P8 COUT22 100uF 1210 R38 0805 OPT R37 R32 0 A1 A2 A3 B1 B2 B3 C1 C2 C3 D1 D2 D3 E9 D9 E10 D10 D8 E8 C5 D5 F2 F1 E2 E1 A5 B10 F11 F12 A11 A12 B11 B12 C11 C12 D11 D12 E12 VINH0 VINH0 VINH0 VINH0 VINH0 VINH0 VINH0 VINH0 VINH0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOSNS0- VOSNS0+ VORB0- VORB0+ COMP0b COMP0a TSNS0b TSNS0a ISNS0a+ ISNS0b+ ISNS0aISNS0b- SNUB0 SW0 VINL VINL 0.035 VIA TESTPOINTS P6 R29 0805 OPT R30 0 LTM4677EY U2 R31 OPT P7 COMP1 C7 OPT VOSNS1 R27 OPT H9 4 H12 J11 J12 K11 K12 L11 L12 M11 M12 VINH1 VINH1 VINH1 VINH1 VINH1 VINH1 VINH1 VINH1 VINH1 L10 SW1 M5 SNUB1 G2 G1 ISNS1aISNS1b- K5 TSNS1b H2 H1 ISNS1a+ ISNS1b+ J5 TSNS1a H8 COMP1a J9 VORB1 J8 COMP1b 3 C8 OPT 4 VOSNS0+ COMP0 RUN1 GPIO0B R119 (OPT) 0 0 R50 R56 0 0 R48 R47 VOSNS0- VOSNS1 COMP1 RUN0 GPIO1B OPTIONAL JUMPER FOR SINGLE OUTPUT CONFIGURATION 3 VOUT0 A4 A6 A7 A8 A9 A10 B4 B5 B6 B7 B8 B9 C4 C6 C7 C8 C9 D4 D7 E3 F3 F10 G3 G10 G11 G12 H3 H10 J4 J10 K4 K7 K8 K9 L4 L5 L6 L7 L8 L9 M4 M6 M7 M8 M9 M10 GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND VOSNS1 J1 J2 J3 K1 K2 K3 L1 L2 L3 M1 M2 M3 0 2010 R54 0 2010 2010 0 2010 0 R53 R51 R49 SYNC VDD33 INTVCC INTVCC VTRIM1CFG VOUT1CFG VTRIM0CFG VOUT0CFG FSWPHCFG ASEL VDD25 RUN1 RUN0 WP GPIO1 GPIO0 SDA SCL ALERT SHARE_CLK VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 SGND SGND SGND SGND G7 G8 F7 F8 DNC DNC DNC DNC VOUT1 C10 E11 H11 K10 ALERTB SCL SDA GPIO0B GPIO1B E5 E6 D6 E4 F4 H6 G6 H5 G5 H4 G4 J6 F6 F5 ALERTB 3.24K R42 R35 10K 2 + COUT16 470uF 2.5V OFF 5 ON SW2 RUN1 GPIO1B R39 10K THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. CUSTOMER NOTICE R46 (OPT) R45 (OPT) R44 (OPT) R43 (OPT) 1.65k RUN0 GPIO0B SDA SCL VIN COUT14 + COUT15 100uF 470uF 1210 2.5V OPT SHARE_CLK SYNC R34 COUT13 100uF 1210 R40 COUT12 100uF 1210 LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. P11 RUN1 SHARE_CLK H7 K6 SYNC E7 J7 C9 OPT COUT44 OPT 2.5V F9 G9 + VOUT1 2 HZ JIAN L. SCALE = NONE APP ENG. PCB DES. APPROVALS RUN1 2 COUT17 100uF 1210 4 1 6 3 5 R28 OPT DATE: SIZE B GND1_SNS GND VOUT1_SNS LTM4677EY TECHNOLOGY E10 J6 E9 VOUT1 www.linear.com DEMO CIRCUIT 2143A-B 1 Wednesday, November 25, 2015 IC NO. SHEET 2 1 OF 6 REV. LTC Confidential-For Customer Use Only Fax: (408)434-0507 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN Module REGULATOR WITH DIGITAL POWER MANAGEMENT TITLE: SCHEMATIC C12 10nF R41 10 R36 10K R33 OPT COUT18 100uF 1210 J5 1 A B C D DEMO MANUAL DC2143A-B Schematic Diagram 11 dc2143abfa A B C 5 VOSNS0- VOSNS0+ + VOUT0 CIN13 10uF 1210 COUT42 OPT 2.5V VIN 470uF 2.5V CIN12 10uF 1210 COUT27 100uF 1210 C15 OPT CIN15 10uF 1210 + COUT28 CIN14 10uF 1210 P14 COUT29 100uF 1210 P17 P16 OPT COUT30 100uF 1210 R63 C16 OPT COMP0 OPT 0805 R62 R60 0 A1 A2 A3 B1 B2 B3 C1 C2 C3 D1 D2 D3 E9 D9 E10 D10 D8 E8 C5 D5 F2 F1 E2 E1 A5 B10 F11 F12 A11 A12 B11 B12 C11 C12 D11 D12 E12 4 4 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOSNS0- VOSNS0+ VORB0- VORB0+ COMP0b COMP0a TSNS0b TSNS0a ISNS0a+ ISNS0b+ ISNS0aISNS0b- SNUB0 SW0 VINL VINL VINH0 VINH0 VINH0 VINH0 VINH0 VINH0 VINH0 VINH0 VINH0 P12 R57 0805 OPT R58 0 COMP0 LTM4677EY U3 R59 OPT 3 P13 C13 OPT H9 0.035 VIA TESTPOINTS H12 J11 J12 K11 K12 L11 L12 M11 M12 VINH1 VINH1 VINH1 VINH1 VINH1 VINH1 VINH1 VINH1 VINH1 L10 SW1 M5 SNUB1 G2 G1 ISNS1aISNS1b- K5 TSNS1b H2 H1 ISNS1a+ ISNS1b+ J5 TSNS1a H8 COMP1a J9 VORB1 J8 COMP1b C14 OPT 3 A4 A6 A7 A8 A9 A10 B4 B5 B6 B7 B8 B9 C4 C6 C7 C8 C9 D4 D7 E3 F3 F10 G3 G10 G11 G12 H3 H10 J4 J10 K4 K7 K8 K9 L4 L5 L6 L7 L8 L9 M4 M6 M7 M8 M9 M10 GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND VOSNS1 VOSNS0+ J1 J2 J3 K1 K2 K3 L1 L2 L3 M1 M2 M3 SYNC VDD33 INTVCC INTVCC VTRIM1CFG VOUT1CFG VTRIM0CFG VOUT0CFG FSWPHCFG ASEL VDD25 RUN1 RUN0 WP GPIO1 GPIO0 SDA SCL ALERT SHARE_CLK VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 SGND SGND SGND SGND G7 G8 F7 F8 DNC DNC DNC DNC 12 ALERTB SCL SDA GPIO0B E5 E6 D6 E4 P18 ALERTB R70 (OPT) R69 (OPT) R68 (OPT) R67 (OPT) 2.43k 2.43K R65 R66 RUN0 GPIO0B SDA SCL 2 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. R64 10K COUT26 470uF 2.5V + SCALE = NONE HZ JIAN L. PCB DES. SIZE DATE: B LTM4677EY TECHNOLOGY www.linear.com 1 DEMO CIRCUIT 2143A-B Tuesday, January 19, 2016 IC NO. SHEET 3 1 OF 6 REV. LTC Confidential-For Customer Use Only Fax: (408)434-0507 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 1 HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN Module REGULATOR WITH DIGITAL POWER MANAGEMENT TITLE: SCHEMATIC COUT41 OPT 2.5V APPROVALS + APP ENG. VIN COUT25 100uF 1210 VOUT0 OPT SHARE_CLK SYNC R61 COUT24 100uF 1210 CUSTOMER NOTICE H6 G6 H5 G5 H4 G4 J6 F6 F5 K6 R121 0 SHARE_CLK F4 SYNC E7 P15 H7 J7 F9 G9 COUT23 100uF 1210 2 LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. C10 E11 H11 K10 D 5 A B C D DEMO MANUAL DC2143A-B Schematic Diagram dc2143abfa A B C 5 OPT 2.5V CIN17 OPT 1210 OPT 2.5V + COUT38 VOSNS0- VOSNS0+ CIN16 OPT 1210 + COUT39 VOUT0 VIN COMP0 R74 0 C20 OPT D10 D8 E8 C5 D5 F2 F1 E2 E1 A5 B10 F11 F12 A11 A12 B11 B12 C11 C12 D11 D12 E12 A1 A2 A3 B1 B2 B3 C1 C2 C3 D1 D2 D3 E9 D9 P24 E10 P23 COUT37 OPT R77 OPT P21 0805 OPT R76 COUT36 OPT CIN19 OPT 1210 COUT35 OPT C19 OPT CIN18 OPT 1210 VINH0 VINH0 VINH0 VINH0 VINH0 VINH0 VINH0 VINH0 VINH0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOSNS0- VOSNS0+ VORB0- VORB0+ COMP0b COMP0a TSNS0b TSNS0a ISNS0a+ ISNS0b+ ISNS0aISNS0b- SNUB0 SW0 VINL VINL 4 0.035 VIA TESTPOINTS H12 J11 J12 K11 K12 L11 L12 M11 M12 VINH1 VINH1 VINH1 VINH1 VINH1 VINH1 VINH1 VINH1 VINH1 P19 L10 SW1 M5 R71 0805 OPT SNUB1 G2 G1 ISNS1aISNS1b- K5 R72 0 COMP0 U4 OPT TSNS1b H2 H1 ISNS1a+ ISNS1b+ J5 TSNS1a H8 COMP1a R73 OPT J9 VORB1 P20 C17 OPT H9 VOSNS1 J8 3 C18 OPT 4 3 A4 A6 A7 A8 A9 A10 B4 B5 B6 B7 B8 B9 C4 C6 C7 C8 C9 D4 D7 E3 F3 F10 G3 G10 G11 G12 H3 H10 J4 J10 K4 K7 K8 K9 L4 L5 L6 L7 L8 L9 M4 M6 M7 M8 M9 M10 GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND COMP1b VOSNS0+ J1 J2 J3 K1 K2 K3 L1 L2 L3 M1 M2 M3 SYNC VDD33 INTVCC INTVCC VTRIM1CFG VOUT1CFG VTRIM0CFG VOUT0CFG FSWPHCFG ASEL VDD25 RUN1 RUN0 WP GPIO1 GPIO0 SDA SCL ALERT SHARE_CLK VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 SGND SGND SGND SGND G7 G8 F7 F8 DNC DNC DNC DNC C10 E11 H11 K10 D 5 ALERTB SCL SDA GPIO0B E6 D6 E4 OPT OPT OPT OPT R82 R83 R84 OPT R80 R81 OPT R79 RUN0 OPT R78 10K VIN COUT33 COUT34 + OPT OPT 2.5V 1210 2 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. CUSTOMER NOTICE P25 GPIO0B SDA SCL ALERTB SHARE_CLK SYNC R75 COUT32 OPT 1210 VOUT0 LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. H6 G6 H5 G5 H4 G4 J6 F6 F5 K6 R122 0 SHARE_CLK F4 SYNC E7 E5 P22 H7 J7 F9 G9 COUT31 OPT 1210 2 SCALE = NONE HZ JIAN L. PCB DES. APPROVALS COUT40 OPT 2.5V APP ENG. + SIZE DATE: B LTM4677EY TECHNOLOGY 1 DEMO CIRCUIT 2143A-B Monday, July 27, 2015 IC NO. SHEET 4 1 OF 6 REV. LTC Confidential-For Customer Use Only Fax: (408)434-0507 www.linear.com HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN Module REGULATOR WITH DIGITAL POWER MANAGEMENT TITLE: SCHEMATIC 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 1 A B C D DEMO MANUAL DC2143A-B Schematic Diagram 13 dc2143abfa A B 5 SDA SCL WP VCC 24LC025-I/ST VSS A2 A1 A0 U9 TO DC1613A AUXP SDA GND SCL LGKPWR ALERTB GPIO_1 OUTEN_0 OUTEN_1 GND AUXSCL AUXSDA J7 TO DC2086A 100nF C32 5 6 7 3V3 EESDA EESCL EEWP 8 AUXVCC 1 2 3 4 5 6 7 8 9 10 11 12 3V3 4 AUX3V4 3 2 1 2 Q19 DMP3130L-7 E25 AUXP VDD33 R134 4.99K R144 4.99K ALERTB VIN R130 10K 3 R141 15.8k 2 4 VDD33 OPTIONAL CIRCUIT FOR PROGRAMMING WITHOUT VIN 4 3 2 1 D8 AUX3V4 SCL GND SDA J14 1 E17 1 C VDD33 SGND 3 SCL E13 FAULTB CTRL ALERTB SDA SHARE_CLK SCL RESETB AUXP UNUSED UNUSED GND GND 12V 12V SDA 1 2 3 4 5 6 7 8 9 10 11 12 13 14 OPT R137 E14 VIN 3V3 R142 OPT E16 R138 OPT 1206 R131 0 SYNC R139 OPT R140 OPT GPIO0B 1 D2 3V3 2N7002K Q3 GREEN GPIO0 R124 200 GPIO1B 1 D1 2N7002K Q4 GREEN GPIO1 R85 200 3 3V3 ALERTB J2, FEMALE, CONN RECEPT 2MM DUAL R/A 14POS, Sullins Conn. NPPN072FJFN-RC J1, MALE, CONN SYNC SHARE_CLK E15 SHARE_CLK R132 OPT FAULTB CTRL ALERTB SDA SHARE_CLK SCL RESETB AUXP UNUSED UNUSED GND GND 12V 12V OPT J13 DEMO HEADER (M) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 R127 R143 0 R135 0 R136 OPT 1 3V3 D3 D5 OPT D4 OPT CUSTOMER NOTICE C33 10nF R129 10 R126 OPT 2 R133 OPT 2 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. R86 127 ALERTB RED SI2365EDS-T1-GE3 Q2 HEADER 14POS 2MM R/A GOLD, Molex Connector Corp. 87760-1416 SCL PSM STACKING CONNECTORS: OPT J12 DEMO HEADER (F) SDA R128 E12 ALERTB ALL PARTS ON THIS PAGE ARE FOR DEMO ONLY, NOT NEEDED IN CUSTOMER DESIGN 3 2 4 3 2 2 14 3 D 5 SCALE = NONE HZ JIAN L. PCB DES. APP ENG. APPROVALS C34 10nF R125 10 SIZE DATE: B RUN1 RUN0 GPIO0B LTM4677EY TECHNOLOGY SGND E22 E21 E19 E18 GPIO1B www.linear.com 1 DEMO CIRCUIT 2143A-B Friday, August 28, 2015 IC NO. SHEET 5 1 OF 6 REV. LTC Confidential-For Customer Use Only Fax: (408)434-0507 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN Module REGULATOR WITH DIGITAL POWER MANAGEMENT TITLE: SCHEMATIC RUN1 RUN0 GPIO0B GPIO1B E11 1 A B C D DEMO MANUAL DC2143A-B Schematic Diagram dc2143abfa 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. A B C 5 BLEEDER R102 2512 OPT VOUT0 LOADS R103 2512 OPT VOUT1 VIN OFF ON R115 20K 4 3 2 2 BIAS JP1 154k R114 1 DIV V+ OUT LTC6992-1 C65 1uF 8 7 6 5 R109 100K VIN GND NC OUTPUT 1 2 3 4 R113 1.4K 1% R112 100 1% R111 C67 20K 0.1uF 3 2 5 +IN V- V+ -IN VOUT U8 LT1803IS5 4 1 R106 3.3 3 1 EXT 3 JP2 PULSE R116 10K JIAN L. APP ENG. 2 SCALE = NONE HZ PCB DES. 1 R117 2 E23 Q11 R108 0.01 Q12 1 E24 J11 J10 www.linear.com DATE: 1 DEMO CIRCUIT 2143A-B Wednesday, November 25, 2015 IC NO. SHEET 6 1 OF 6 REV. LTC Confidential-For Customer Use Only Fax: (408)434-0507 C70 1uF 0805 IOUT TST VOUT0 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 GND LTM4677EY TECHNOLOGY R118 0.01 SUD50N04-8M8P-4GE3 1 C66 0.22uF 1 HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN Module REGULATOR WITH DIGITAL POWER MANAGEMENT SIZE B 1 SUD50N04-8M8P-4GE3 VOUT0 TITLE: SCHEMATIC EXT PULSE APPROVALS C69 INT 150pF R107 82.5 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. CUSTOMER NOTICE +5V C64 4.7uF C68 1uF +5V LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. R110 5K R123 1000K R105 681K R104 0 SENSE/ADJ 4 5 6 LT1129CS8-5 GND GND SHDN U6 70Hz, 3% Duty Cycle SET GND MOD U7 DYNAMIC LOAD CIRCUIT 2 ALL PARTS ON THIS PAGE ARE FOR DEMO ONLY, NOT NEEDED IN CUSTOMER DESIGN 2 3 2 3 3 2 4 3 1 2 3 4 5 2 3 4 5 D 5 A B C D DEMO MANUAL DC2143A-B Schematic Diagram dc2143abfa 15 DEMO MANUAL DC2143A-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 (c) 2004, Linear Technology Corporation 16 Linear Technology Corporation dc2143abfa LT 0616 REV A * PRINTED IN USA 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 www.linear.com (c) LINEAR TECHNOLOGY CORPORATION 2016