DEMO MANUAL DC2481A-B LTM4677EY and LTM4650 Step-Down Module Regulator with PMBus Power System Management LTM4677 + 3x LTM4650, 186A DESCRIPTION Demonstration circuit 2481A-B is a high efficiency, high density, Module(R) regulator with 4.5V to 16V input range. The output voltage is adjustable from 0.5V to 1.8V, and it can supply 186A maximum load current. The demo board has 1x LTM(R)4677 and 3x LTM4650 Module regulators. The LTM4677 is a dual 18A or single 36A step-down regulator with PMBus power system management, and the LTM4650 is a dual 25A or single 50A step-down regulator. Please see LTM4677 and LTM4650 data sheets for more detailed information. DC2481A-B powers up to default settings and produce 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 LTpowerPlay(R) 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 Software GUI. Design files for this circuit board are available at http://www.linear.com/demo/DC2481A-B L, LT, LTC, LTM, Module, LTpowerPlay, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. BOARD PHOTO Figure 1. LTM4677 + 3x LTM4650; 186A DC2481A-B Demo Circuit dc2481abf 1 DEMO MANUAL DC2481A-B PERFORMANCE SUMMARY PARAMETER Specifications are at TA = 25C CONDITIONS VALUE Input Voltage Range 4.5V to 16V Output Voltage, VOUT0 VIN = 4.5V to 16V, IOUT0 = 0A to 186A 0.5 to 1.8V, Default: 1V Maximum Output Current, IOUT0 VIN = 4.5V to 16V, VOUT = 0.5V to 1.8V 186A Typical Efficiency VIN = 12V, VOUT = 1.0V, IOUT = 186A 85.8% Default Switching Frequency 425kHz QUICK START PROCEDURE MAXIMUM OUTPUT CURRENT NUMBER OF OUTPUT VOLTAGES NUMBER OF LTM4677 MODULE REGULATORS ON THE BOARD DEMO BOARD NUMBER Dual 18A 2 1x LTM4677 DC2066A 72A 1 2x LTM4677 DC2143A-A 108A 1 3x LTM4677 DC2143A-B 144A 1 4x LTM4677 DC2143A-C 86A 1 1x LTM4677 (+1xLTM4650) DC2481A-A 186A 1 1x LTM4677 (+3xLTM4650) DC2481A-B Demonstration circuit 2481A-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 VOUT0 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. 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 DC2481A-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. 6. Connect the dongle and control the output voltages from the GUI. See "LTpowerPlay Software GUI" for details. 2 dc2481abf DEMO MANUAL DC2481A-B QUICK START PROCEDURE + - 1m LOAD (0~186A) + - VOUT0 - ++ + - dc2481abf F02 - VIN 4.5V TO 16V Figure 2. Proper Measurement Equipment Setup + VOUT - COUT GND Figure 3. Measuring Output Voltage Ripple dc2481abf 3 DEMO MANUAL DC2481A-B QUICK START PROCEDURE InputPower Supply USBCable VIN USBtoI2C/PMBus DongleDC1613A 12-PIN(J7) 1212 Connector LTM4677Demo BoardDC2481A-B Vout0 Load Figure 4. Demo Setup with PC Efficiency vs Load Current 90 EFFICIENCY (%) 85 80 75 VIN = 12V, VO = 1V, fSW = 425kHz 70 0 20 40 60 80 100 120 140 OUTPUT LOAD CURRENT (A) 160 180 dc2481abf F05 Figure 5. Efficiency vs Load Current at VIN = 12V, VO = 1V and fSW = 425kHz 4 dc2481abf DEMO MANUAL DC2481A-B QUICK START PROCEDURE VOUT0 (20MHz BW) [20mV/DIV] 93A - 140A LOAD STEP Figure 6. Output Voltage VOUT0 vs Load Current at VIN = 12V, VOUT0 = 1V (VOUT0 Range = 0) VOUT0 (20MHz BW) [20mV/DIV] Figure 7. Output Voltage Ripple at VIN = 12V, VOUT0 = 1V, IOUT0 = 186A dc2481abf 5 DEMO MANUAL DC2481A-B QUICK START PROCEDURE Figure 8. Thermal Performance at VIN = 12V, VOUT0 = 1V, IOUT0 = 186A, TA = 23.8C, Air Flow 400LFM DC Load Current Sharing LTM4677 50 LTM4650_MOD 1 LTM4650_MOD 2 LOAD CURRENT PER PHASE (A) LTM4650_MOD 3 40 30 20 10 0 0 40 80 120 TOTAL LOAD CURRENT (A) 160 200 dc2481abf F09 Figure 9. Current Sharing Performance at VIN = 12V, VOUT0 = 1V 6 dc2481abf DEMO MANUAL DC2481A-B LTPOWERPLAY SOFTWARE GUI LTpowerPlay is a powerful Windows based development environment that supports Linear Technology power system management ICs, including the LTM4677, LTC(R)3880, 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://linear.com/ltpowerplay To access technical support documents for LTC Digital Power Products visit Help. View online help on the LTpowerPlay menu. Figure 10. LTpowerPlay Main Interface dc2481abf 7 DEMO MANUAL DC2481A-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: 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: http://linear.com/ltpowerplay 2. Launch the LTpowerPlay GUI. a. The GUI should automatically identify the DC2481A-B. The system tree on the left hand side should look like this: 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. b. A green message box shows for a few seconds in the lower left hand corner, confirming that LTM4677 is communicating: If the write is successful, you will see the following message: e. You can save the changes into the NVM. In the tool bar, click "RAM to NVM" button, as following 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. 8 f. Save the demo board configuration to a (*.proj) file. Click the Save icon and save the file. Name it whatever you want. dc2481abf DEMO MANUAL DC2481A-B PARTS LIST ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Required Circuit Components 1 18 CIN1, CIN2, CIN4-CIN19 CAP., X5R, 10F, 35V, 10%,1210 MURATA, GRM32ER6YA106KA12L 2 1 CIN3 CAP., 150F, 35V, Aluminum Electr., SUN ELECT., 35CE150AX 3 21 COUT1-COUT4, COUT6, COUT9, COUT10, COUT12, COUT13, COUT15, COUT16, COUT19, COUT20, COUT23, COUT24, COUT27, COUT28, COUT31, COUT32, COUT35, COUT36 4 10 COUT5, COUT7, COUT8, COUT11 COUT18, COUT22, COUT26, COUT30, 5 1 C5 CAP., CER 4700PF, 16V, X7R, 0603 MURATA, GRM188R71C472KA01D 6 4 C7, C8, C33. C34 CAP., X7R, 0.01F, 16V, 10%,0603 MURATA, GRM188R71C103KA01D 7 3 C11, C18, C22 CAP., X5R, 2.2F, 16V, 10%, 0603 MURATA, GRM188R61C225KE15D 8 3 C12, C19, C23 CAP., X7R, 1F, 16V, 10%, 0603 MURATA, GRM188R71C105KA12D COUT34, COUT38 9 2 C31, C28 CAP., X7R, 1F, 25V,10%, 1206 MURATA, GRM31MR71E105KA01L 10 1 C25 CAP., X7R, 0.22F, 25V,10%, 0805 MURATA, GRM21BR71E224KA01L 11 1 C26 CAP., X7R, 0.1F, 25V,10%, 1206 MURATA, GRM319R71E104KA01J 12 1 C29 CAP., X5R, 1F, 25V, 10%, 0805 MURATA, GRM216R61E105KA12D 13 1 C27 CAP., X7R, 150pF, 25V, 10%, 0603 Wurth Elektronik, 885012206054 14 1 C30 CAP., X5R, 4.7F, 10V, 10%, 0603 MURATA, GRM188R61A475KE15D 15 2 D1, D2 LED, GREEN CLEAR 1208 SMD ROHM, SML-010FTT86 16 1 D3 LED, RED CLEAR 1208 SMD ROHM, SML-010VTT86 17 3 Q1, Q3, Q4 MOSFET N-CH 60V, 115MA, SOT-23 FAIRCHILD, 2N7002K 18 1 Q2 MOSFET P-CH 20V, 0.58A, SOT-23 VISHAY, Si2365EDS-T1-GE3 (ALTERNATE TP0101K-T1-E3) 19 2 Q5, Q6 MOSFET SPEED SRS 30V, 30A, LFPAK RENESAS, RJK0305DPB-02#J0 20 1 Q19 P-Channel 30-V Mosfet DIODES INC., DMP3130L-7 21 1 R25 RES., CHIP, 22.6K, 1%, 0603 VISHAY, CRCW060322K6FKEA 22 22 R4, R8, R23, R31, R32, R34, R37, R41, R42, R44, R46, R47, R50, R51, R55, R61, R64, R66, R75, R80, R114, R116 RES., CHIP, 0, 1%, 0603 VISHAY, CRCW06030000Z0EA 23 4 R43, R49, R52, R56 RES., CHIP, 0, 1%, 2010 VISHAY, CRCW20100000Z0EA 24 11 R10, R11, R12, R13, R16, R17, R21, R58, R77, R94, R118, RES., CHIP, 10k, 1%, 0603 VISHAY, CRCW060310K0FKEA 25 1 R9 RES., CHIP, 7.15k, 1%, 0603 VISHAY, CRCW06037K15FKEA 26 4 R22, R26, R70, R73 RES., CHIP, 10, 1%, 0603 VISHAY, CRCW060310R0FKEA 27 1 R102 RES., CHIP, 732, 1%, 0603 VISHAY, CRCW0603732RFKEA 28 1 R98 RES., CHIP, 511, 1%, 0603 VISHAY, CRCW0603511RFKEA 29 3 R33, R60, R65 RES., CHIP, 121k, 1%, 0603 VISHAY, CRCW0603121KFKEA 30 3 R40, R63, R68, RES., CHIP, 80.6k, 1%, 0603 VISHAY, CRCW060380K6FKEA 31 1 R35 RES., CHIP, 60.4k, 1%, 0603 VISHAY, CRCW060360K4FKEA 32 1 R36 RES., CHIP, 8.25k, 1%, 0603 VISHAY, CRCW06038K25FKEA dc2481abf 9 DEMO MANUAL DC2481A-B PARTS LIST ITEM QTY 33 1 34 35 REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER R19 RES., CHIP, 2.94k, 1%, 0603 VISHAY, CRCW06032K94FKEA 3 R45, R84, R85 RES., CHIP, 200, 1%, 0603 VISHAY, CRCW0603200RFKEA 1 R54, RES., CHIP, 2k, 1%, 0603 VISHAY, CRCW06032K00FKEA 3 R89, R92, R117 RES., CHIP, 20k, 1%, 0603 VISHAY, CRCW060320K0FKEA 36 2 R76, R115 RES., CHIP, 4.99k, 1%, 0603 VISHAY, CRCW06034K99FKEA 37 1 R86 RES., CHIP, 127, 1%, 0603 VISHAY, CRCW0603127RFKEA 38 1 R87 RES., CHIP, 2, 1%, 0603 VISHAY, CRCW06032R00FKEA 39 1 R88 RES., CHIP, 1M, 1%, 0603 VISHAY, CRCW06031M00FKEA 40 1 R90 RES., CHIP, 154k, 1%, 0603 VISHAY, CRCW0603154KFKEA 41 1 R91 RES., CHIP, 3.3, 1%, 0603 VISHAY, CRCW06033R30FKEA 42 1 R93 RES., CHIP, 681k, 1%, 0603 VISHAY, CRCW0603681KFKEA 43 1 R95 RES., CHIP, 82.5, 1%, 0603 VISHAY, CRCW060382R5FKEA 44 1 R112 RES., CHIP, 15.8k, 1%, 0603 VISHAY, CRCW060315K8FKEA 45 2 R99, R100 RES., CHIP, 0.01, 1%, 2010 VISHAY, WSL2010R0100FEA 46 1 R101 TRIMMING POTENTIOMETER, 5K BOURNS, 3386P-1-502LF 47 1 R103 RES., CHIP, 100k, 1%, 0603 VISHAY CRCW0603100KFKEA 48 1 U1 IC., LTM4677EY LINEAR TECH., LTM4677EY#PBF 49 3 U2, U3, U4 IC., LTM4650EY LINEAR TECH., LTM4650EY#PBF 50 1 U5 IC., LT1801CMS8, MSOP LINEAR TECH., LT1801CMS8#PBF 51 1 U6 IC., EEPROM 2KBIT 400KHZ 8TSSOP MICROCHIP, 24LC025-I/ST 52 1 U7 IC., LTC6992-1, S6-TSOT23 LINEAR TECH., LTC6992CS6-1#PBF 53 1 U8 IC., LT1803IS5, S5-TSOT23 LINEAR TECH., LT1803IS5#PBF 54 1 U9 IC., LT1129CS8-5, S8 LINEAR TECH., LT1129CS8-5#PBF Additional Demo Board Circuit Components 1 0 C1, C2, C3, C4, C6, C13, COUT14, COUT17, COUT21, COUT25, COUT29, COUT33, COUT37, COUT39-COUT50 CAP., OPTIONAL 2 0 C9, C10, C16, C17, C20, C21 CAP., OPTIONAL 3 0 D10 DIODE, OPT 4 0 R1-R3, R5-R7, R14, R15, R18, R20, R24, R27-R30, R38, R39, R41, R48, R59, R62, R67, R69, R71, R72, R78, R79, R96, R97, R104-R109 RES., OPTIONAL 5 0 R39, R62, R67, R69 RES., OPTIONAL 10 dc2481abf DEMO MANUAL DC2481A-B PARTS LIST ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Hardware for Demo-Board Only 1 24 E1-E24 TESTPOINT, TURRET, .062" MILL-MAX, 2308-2-00-80-00-00-07-0 2 2 JP1, JP2 HEADER, 3 PIN 0.079 SINGLE ROW Wurth Elektronik, 62000311121 3 2 XJP1, XJP2 SHUNT, .079" CENTER Wurth Elektronik, 60800213421 4 2 J1, J3 JACK, BANANA KEYSTONE, 575-4 5 4 J2, J4, J5, J6 STUD, TESTPIN PEM, KFH-032-10 6 8 J1, J2, J3, J4, J5, J6 (x2) NUT, BRASS 10-32 ANY, 10-32M/S BR PL 7 4 J1, J2, J3, J4, J5, J6 RING, LUG #10 KEYSTONE, 8205 8 4 J1, J2, J3, J4, J5, J6 WASHER, TIN PLATED BRASS ANY #10, #10EXT BZ TN 9 2 SW1, SW2 CONN, SUB MINIATURE SLIDE SWITCHES C&K., JS202011CQN 10 1 J7 CONN HEADER 12POS 2MM STR DL PCB FCI, 98414-G06-12ULF 11 2 J10, J11 CONN, BNC, 5PINS CONNEX, 112404 12 1 J14 HEADER, 4 PINS, SHROUDED HIROSE, DF3A-4P-2DSA 13 1 J12 CONN RECEPT 2MM DUAL R/A 14POS (F) SULLINS, NPPN072FJFN-RC 14 1 J13 HEADER 14POS 2MM R/A GOLD (M) MOLEX, 87760-1416 15 4 (STAND-OFF) STAND-OFF, NYLON 0.50" tall WURTH ELEKTRONIK, 702935000 16 1 FAB, PRINTED CIRCUIT BOARD DEMO CIRCUIT 2481A Rev 1 17 2 STENCIL (TOP & BOTTOM) STENCIL DC2481A dc2481abf 11 A B C VIN * E4 J2 E7 E9 J6 J5 GND0_SNS GND VOUT0 1V/186A VOUT0_SNS GND GND 4.5V - 15V E3 J4 CIN2 10uF VOSNS0- COUT9 100uF 1210 VOUT0 VOUT0_SNS CIN1 10uF 1210 5 CIN3 150uF 35V 0 R31 COUT10 100uF 0 R23 + C6 OPT CIN5 10uF 1210 COUT11 + 470uF 2.5V D2 VIN CIN7 10uF 1210 COMP0 COUT12 100uF 1210 R19 2.94K C5 4.7nF CIN4 10uF 1210 COUT13 100uF 1210 P4 P7 COUT14 OPT 1210 VOSNS0- VOSNS0+ P6 P5 R20 OPT OPT 0805 R18 R8 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 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 SVIN SVIN VIN0 VIN0 VIN0 VIN0 VIN0 VIN0 VIN0 VIN0 VIN0 * 4 WHEN VIN < 5.75V, SHORT INTVCC TO VIN WITH R7=0 0hm. 1. ALL RESISTORS ARE 0603. ALL CAPACITORS ARE 0603. NOTE: UNLESS OTHERWISE SPECIFIED 470uF 2.5V D2 + COUT8 C4 OPT CIN6 10uF 1210 0.035 VIA TESTPOINTS P1 R3 0805 OPT R4 0 R5 OPT P2 COMP1 VOSNS1 R1 OPT C1 OPT 3 U1 LTM4677EY C2 OPT 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 VIN 4 H12 J11 J12 K11 K12 L11 L12 M11 M12 VIN1 VIN1 VIN1 VIN1 VIN1 VIN1 VIN1 VIN1 VIN1 L10 SW1 M5 SNUB1 G2 G1 ISNS1aISNS1b- K5 TSNS1b J5 TSNS1a H2 H1 ISNS1a+ ISNS1b+ H8 COMP1a J8 COMP1b J9 VORB1 H9 VOSNS1 J1 J2 J3 K1 K2 K3 L1 L2 L3 M1 M2 M3 0 R32 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 VTRIM1CFG VOUT1CFG VTRIM0CFG VOUT0CFG FSWPHCFG ASEL VDD25 RUN1 RUN0 WP GPIO1 GPIO0 SDA SCL ALERT SHARE_CLK SYNC VDD33 INTVCC INTVCC P3 SHARE_CLK ALERTB SCL SDA GPIO0B GPIO1B E5 E6 D6 E4 F4 RUN1 VDD25 ASEL FREQ_CFG VOUT0_CFG VTRIM0_CFG VOUT1_CFG VTRIM1_CFG F6 J6 G4 H4 G5 H5 G6 H6 R9 1K R11 10K 18.0K R30 OPT R29 OPT R28 OPT R27 OPT R25 R24 OPT R10 10K VDD33 R7 COUT2 100uF 1210 R12 10K OPT + R14 OPT COUT5 470uF 2.5V D2 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. R13 10K VIN COUT3 100uF 1210 VOUT1 CUSTOMER NOTICE RUN0 F5 K6 SYNC E7 VDD33 H7 J7 F9 G9 C3 OPT COUT1 100uF 1210 OPT 2 R16 10K SCALE = NONE HZ ST PCB DES. APP ENG. R17 10K RUN0 OFF 5 ON SW1 RUN0 APPROVALS R21 10K R15 OPT R2 OPT COUT4 100uF 1210 + INTVCC COUT7 470uF 2.5V D3L C7 10nF R22 10 E6 E5 J3 E2 E1 E8 VOUT1 VDD25 OFF 5 ON SW2 RUN1 VDD33 GND1_SNS GND INTVCC VOUT1_SNS VOUT1_SNS J1 PRODUCTION www.linear.com LTM4677EY / LTM4650EY 1 SHEET 1 DEMO CIRCUIT 2481A-A/B Monday, April 18, 2016 IC NO. 1 OF 6 REV. LTC Confidential-For Customer Use Only Phone: (408)432-1900 Fax: (408)434-0507 C8 10nF R26 10 Simon T. 1630 McCarthy Blvd. Milpitas, CA 95035 2 DATE 04-18-16 APPROVED HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN MODULE REGULATOR WITH POWER SYSTEM MANAGEMENT DATE: B SIZE 1 DESCRIPTION REVISION HISTORY TECHNOLOGY GPIO1B GPIO0B SDA SCL ALERTB SHARE_CLK SYNC OPT 1 REV TITLE: SCHEMATIC RUN1 2 R6 COUT6 100uF 1210 __ ECO 4 1 6 3 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 4 1 12 6 3 D 5 A B C D DEMO MANUAL DC2481A-B SCHEMATIC DIAGRAM dc2481abf A B C SYNC 1 R105 OPT +5V CLKOUT_U1 5 Q1 2N7002A R45 200 INTVCC_U2 0 R41 (OPT) R39 INTVCC_U2 VIN CIN8 10uF 1210 CIN9 10uF 1210 CIN11 10uF 1210 C11 2.2uF 10V C12 1uF 10V R58 10K 0 R51 80.6K 1% R40 R104 OPT R54 2K EXTVCC INTVCC_U2 CIN10 10uF 1210 A6 A7 B6 B7 D1 D2 D3 D4 D9 D10 D11 D12 E1 G4 C6 J7 H8 L2 L3 L4 L5 L6 L7 L8 L9 L10 L11 M2 M3 M4 M5 M6 M7 M8 M9 M10 M11 GND GND GND GND GND GND GND GND GND GND GND GND GND PHASMD FSET EXTVCC INTVCC VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN 4 R33 R34 0 U2 LTM4650EY 121K 1% CLKOUT_U1 CLKOUT_U2 R47 0 4 R59 OPT COMP0 GPIO0B R109 OPT 0 R55 4 3 2 1 V- 5 +IN B 6 -IN B 7 OUT B 8V+ LT1801CMS8 +IN A -IN A OUTA U5 INTVCC 5 6 7 8 CLKOUT_U1 3 CLKOUT_U2 COMP R46 0 R106 3 C13 OPT R48 OPT +5V 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 E2 E3 E4 E10 E11 E12 F1 F2 F3 F10 F11 F12 G1 G3 G10 G12 H1 H2 H3 H4 H5 H6 H7 H9 H10 H11 H12 J1 J5 J8 J12 K1 K5 K6 K7 K8 K12 L1 L12 M1 M12 D 3 2 K11 K10 K9 K4 K3 K2 J11 J10 J9 J4 J3 J2 VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN J6 TEMP F4 MODE-PLLIN G5 CLKOUT A1 A2 A3 A4 A5 B1 B2 B3 B4 B5 C1 C2 C3 C4 SW1 VFB1 P8 OPT D5 RUN RUN D8 E8 E9 INTVCC_U2 COMP C8 F9 VFB E7 G8 G11 D7 A8 A9 A10 A11 A12 B8 B9 B10 B11 B12 C9 C10 C11 C12 F8 C5 P10 OPT 2010 2 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. CUSTOMER NOTICE R56 0 2010 R52 0 2010 VOUT1 COUT19 100uF 1210 470uF 2.5V D2 COUT46 + 470uF 2.5V D2 2.5V D2 COUT40 + 470uF COUT47 + 470uF 2.5V D2 2.5V D2 COUT41 + 470uF VOUT0_SNS COMP0 SCALE = NONE HZ ST PCB DES. APP ENG. R44 0 R42 0 www.linear.com 1 SHEET 2 DEMO CIRCUIT 2481A-A/B LTM4677EY / LTM4650EY Monday, April 18, 2016 IC NO. 1 OF 6 REV. LTC Confidential-For Customer Use Only Phone: (408)432-1900 Fax: (408)434-0507 1630 McCarthy Blvd. Milpitas, CA 95035 VOUT1_SNS 2.5V D2 COUT50 + 470uF VOUT1 2.5V D2 COUT44 + 470uF HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN MODULE REGULATOR WITH POWER SYSTEM MANAGEMENT DATE: B SIZE RUN0 GPIO1B TECHNOLOGY R116 0 R50 0 TITLE: SCHEMATIC RUN1 COUT49 + 470uF 2.5V D2 2.5V D2 COUT43 + 470uF COMP1 COUT48 + 470uF 2.5V D2 2.5V D2 COUT42 + 470uF OPTIONAL JUMPER FOR SINGLE OUTPUT CONFIGURATION GPIO0B 1 OPTIONAL OUTPUT SP-CAP + COUT22 COUT45 + 470uF 2.5V D2 2.5V D2 COUT39 + 470uF VOUT0 VFB COUT21 OPT 1210 VOUT0 C9 (OPT) APPROVALS COUT20 100uF 1210 R36 8.25k R35 60.4k INTVCC_U2 R49 0 2010 R43 0 RUN0 COMP VOUT0 VIN C10 (OPT) 470uF 2.5V D2 + COUT18 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. TRACK RUN COMP R118 10K R117 20K R38 RUN VFB COUT17 OPT 1210 VOUT0 VFB P11 P9 COUT16 100uF 1210 TRACK COMP E5 F5 R37 0 COUT15 100uF 1210 E6 G9 G2 EXTVCC DIFFP DIFFN TRACK2 VOUTS2 RUN2 COMP2 PGOOD2 SW2 VFB2 VOUT2 VOUT2 VOUT2 VOUT2 VOUT2 VOUT2 VOUT2 VOUT2 VOUT2 VOUT2 VOUT2 VOUT2 VOUT2 VOUT2 DIFFOUT VOUTS1 TRACK1 RUN1 COMP1 PGOOD1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 SGND SGND SGND SGND SGND SGND C7 D6 F6 F7 G6 G7 5 A B C D DEMO MANUAL DC2481A-B SCHEMATIC DIAGRAM 13 dc2481abf A B C 5 R64 0 (OPT) R62 INTVCC_U3 VIN CIN12 10uF 1210 CIN13 10uF 1210 CIN15 10uF 1210 C18 2.2uF 10V C19 1uF 10V EXTVCC INTVCC_U3 CIN14 10uF 1210 80.6K 1% R63 R107 OPT 4 A6 A7 B6 B7 D1 D2 D3 D4 D9 D10 D11 D12 E1 G4 C6 J7 H8 L2 L3 L4 L5 L6 L7 L8 L9 L10 L11 M2 M3 M4 M5 M6 M7 M8 M9 M10 M11 GND GND GND GND GND GND GND GND GND GND GND GND GND PHASMD FSET EXTVCC INTVCC VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN R60 R61 0 U3 LTM4650EY 121K 1% CLKOUT_U3 CLKOUT_U2 3 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 3 E2 E3 E4 E10 E11 E12 F1 F2 F3 F10 F11 F12 G1 G3 G10 G12 H1 H2 H3 H4 H5 H6 H7 H9 H10 H11 H12 J1 J5 J8 J12 K1 K5 K6 K7 K8 K12 L1 L12 M1 M12 4 K11 K10 K9 K4 K3 K2 J11 J10 J9 J4 J3 J2 VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN J6 TEMP F4 MODE-PLLIN G5 CLKOUT CLKOUT_U2 CLKOUT_U3 A1 A2 A3 A4 A5 B1 B2 B3 B4 B5 C1 C2 C3 C4 SW1 VFB1 DIFFP DIFFN TRACK2 VOUTS2 RUN2 COMP2 PGOOD2 SW2 VFB2 VOUT2 VOUT2 VOUT2 VOUT2 VOUT2 VOUT2 VOUT2 VOUT2 VOUT2 VOUT2 VOUT2 VOUT2 VOUT2 VOUT2 DIFFOUT VOUTS1 TRACK1 RUN1 COMP1 D5 RUN D8 E8 E9 P14 P15 COMP C16 (OPT) RUN RUN VFB VFB COUT25 OPT 1210 VOUT0 C17 (OPT) VFB 2 COUT27 100uF 1210 SCALE = NONE HZ ST PCB DES. APP ENG. APPROVALS COMP 470uF 2.5V D2 + COUT26 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. CUSTOMER NOTICE INTVCC_U3 TRACK COMP C8 F9 VFB E7 G8 G11 D7 A8 A9 A10 A11 A12 B8 B9 B10 B11 B12 C9 C10 C11 C12 F8 C5 P13 COUT24 100uF 1210 TRACK RUN F5 E5 COMP E6 G9 G2 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. P12 PGOOD1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 SGND SGND SGND SGND SGND SGND 14 C7 D6 F6 F7 G6 G7 D 5 COUT29 OPT 1210 DATE: B SIZE TECHNOLOGY 470uF 2.5V D2 + COUT30 www.linear.com 1 SHEET 3 DEMO CIRCUIT 2481A-A/B LTM4677EY / LTM4650EY Monday, April 18, 2016 IC NO. 1 OF 6 REV. LTC Confidential-For Customer Use Only Phone: (408)432-1900 Fax: (408)434-0507 1630 McCarthy Blvd. Milpitas, CA 95035 HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN MODULE REGULATOR WITH POWER SYSTEM MANAGEMENT TITLE: SCHEMATIC COUT28 100uF 1210 VOUT0 1 A B C D DEMO MANUAL DC2481A-B SCHEMATIC DIAGRAM dc2481abf A B C 5 (OPT) R69 (OPT) R67 INTVCC_U4 VIN CIN16 10uF 1210 CIN17 10uF 1210 CIN19 10uF 1210 C22 2.2uF 10V C23 1uF 10V EXTVCC INTVCC_U4 CIN18 10uF 1210 4 80.6K 1% R68 R108 OPT A6 A7 B6 B7 D1 D2 D3 D4 D9 D10 D11 D12 E1 G4 C6 J7 H8 L2 L3 L4 L5 L6 L7 L8 L9 L10 L11 M2 M3 M4 M5 M6 M7 M8 M9 M10 M11 GND GND GND GND GND GND GND GND GND GND GND GND GND PHASMD FSET EXTVCC INTVCC VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN R65 R66 0 CLKOUT_U3 E10 CLKOUT CLKOUT_U4 U4 LTM4650EY 121K 1% 3 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 3 E2 E3 E4 E10 E11 E12 F1 F2 F3 F10 F11 F12 G1 G3 G10 G12 H1 H2 H3 H4 H5 H6 H7 H9 H10 H11 H12 J1 J5 J8 J12 K1 K5 K6 K7 K8 K12 L1 L12 M1 M12 4 K11 K10 K9 K4 K3 K2 J11 J10 J9 J4 J3 J2 VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN J6 TEMP F4 MODE-PLLIN G5 CLKOUT CLKOUT_U3 CLKOUT_U4 A1 A2 A3 A4 A5 B1 B2 B3 B4 B5 C1 C2 C3 C4 SW1 VFB1 P16 D5 RUN RUN INTVCC_U4 COMP RUN VFB P19 2 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. CUSTOMER NOTICE E8 E9 D8 TRACK COMP C8 F9 VFB P18 E7 G8 G11 D7 A8 A9 A10 A11 A12 B8 B9 B10 B11 B12 C9 C10 C11 C12 F8 C5 RUN C20 (OPT) COUT33 OPT 1210 VFB COUT32 100uF 1210 P17 TRACK COMP F5 E5 E6 G9 G2 COUT31 100uF 1210 VOUT0 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. DIFFP DIFFN TRACK2 VOUTS2 RUN2 COMP2 PGOOD2 SW2 VFB2 VOUT2 VOUT2 VOUT2 VOUT2 VOUT2 VOUT2 VOUT2 VOUT2 VOUT2 VOUT2 VOUT2 VOUT2 VOUT2 VOUT2 DIFFOUT VOUTS1 TRACK1 RUN1 COMP1 PGOOD1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 SGND SGND SGND SGND SGND SGND C7 D6 F6 F7 G6 G7 D 5 SCALE = NONE HZ ST PCB DES. APPROVALS COMP APP ENG. C21 (OPT) VFB 470uF 2.5V D2 + COUT34 COUT36 100uF 1210 www.linear.com 1 SHEET 4 DEMO CIRCUIT 2481A-A/B LTM4677EY / LTM4650EY Monday, April 18, 2016 IC NO. 1 OF 6 REV. LTC Confidential-For Customer Use Only Phone: (408)432-1900 Fax: (408)434-0507 1630 McCarthy Blvd. Milpitas, CA 95035 HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN MODULE REGULATOR WITH POWER SYSTEM MANAGEMENT DATE: B SIZE 470uF 2.5V D2 + COUT38 TECHNOLOGY COUT37 OPT 1210 TITLE: SCHEMATIC COUT35 100uF 1210 VOUT0 1 A B C D DEMO MANUAL DC2481A-B SCHEMATIC DIAGRAM 15 dc2481abf A B 5 SDA SCL WP VCC 24LC025-I/ST VSS A2 A1 A0 U6 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 R76 4.99K Q19 VDD33 DMP3130L-7 E25 AUXP R115 4.99K ALERTB VIN R77 10K 3 R112 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 R79 E14 VIN 3V3 R113 OPT E16 R82 OPT 1206 R75 0 SYNC R111 OPT R83 OPT R110 OPT FAULTB CTRL ALERTB SDA SHARE_CLK SCL RESETB AUXP UNUSED UNUSED GND GND 12V 12V OPT GPIO0B 1 D2 R80 0 R81 OPT J13 DEMO HEADER (M) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 R72 R114 0 3V3 2N7002A Q3 GREEN GPIO0 R84 200 GPIO1B 3 1 D1 3V3 2N7002A Q4 GREEN GPIO1 R85 200 ALERTB ALERTB RED R86 127 C33 10nF R73 10 R71 OPT 2 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. CUSTOMER NOTICE D3 TP0101K Q2 D5 OPT 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. 1 3V3 J2, FEMALE, CONN RECEPT 2MM DUAL R/A 14POS, Sullins Conn. NPPN072FJFN-RC J1, MALE, CONN SYNC SHARE_CLK E15 SHARE_CLK HEADER 14POS 2MM R/A GOLD, Molex Connector Corp. 87760-1416 SCL PSM STACKING CONNECTORS: OPT J12 DEMO HEADER (F) SDA R74 E12 ALERTB ALL PARTS ON THIS PAGE ARE FOR DEMO ONLY, NOT NEEDED IN CUSTOMER DESIGN 3 2 4 3 2 2 16 3 D 5 SCALE = NONE HZ ST PCB DES. APP ENG. APPROVALS D4 OPT R78 OPT DATE: B SIZE TECHNOLOGY RUN1 RUN0 GPIO0B www.linear.com 1 SHEET 5 DEMO CIRCUIT 2481A-A/B LTM4677EY / LTM4650EY Monday, April 18, 2016 IC NO. 1 OF 6 REV. LTC Confidential-For Customer Use Only Phone: (408)432-1900 Fax: (408)434-0507 1630 McCarthy Blvd. Milpitas, CA 95035 SGND E22 E21 E19 E18 GPIO1B HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN MODULE REGULATOR WITH POWER SYSTEM MANAGEMENT TITLE: SCHEMATIC C34 10nF R70 10 RUN1 RUN0 GPIO0B GPIO1B E11 1 A B C D DEMO MANUAL DC2481A-B SCHEMATIC DIAGRAM dc2481abf 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 R96 2010 OPT VOUT0 LOADS R97 2010 OPT VOUT1 OFF ON R92 20K 4 3 2 2 BIAS JP2 R90 154K 1 C31 1uF 8 7 6 5 R103 100K VIN GND GND NC GND OUTPUT SENSE/ADJ 4 5 6 LT1129CS8-5 U7 DIV V+ OUT SHDN U9 LTC6992-1 SET GND MOD 70Hz, 3% Duty Cycle DYNAMIC LOAD CIRCUIT VIN 3 2 1 2 3 4 R93 681K R88 1M R101 5K R102 732 1% R98 511 1% C26 0.1uF -IN VOUT LT1803IS5 +IN V- V+ U8 4 1 R91 3.3 C27 150pF R95 3 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. CUSTOMER NOTICE 3 2 5 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. +5V C30 4.7uF C28 1uF R89 20K +5V 2 EXT 3 R94 10K 4 2 SCALE = NONE HZ ST PCB DES. APP ENG. APPROVALS INT 82.5 1 JP1 PULSE R87 2 E23 EXT PULSE VOUT0 5 DATE: B SIZE J10 J11 E24 GND TST IOUT VOUT0 1 SHEET 6 DEMO CIRCUIT 2481A-A/B Monday, April 18, 2016 IC NO. 1 OF 6 REV. 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only C29 1uF 0805 1 1 HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN MODULE REGULATOR WITH POWER SYSTEM MANAGEMENT TECHNOLOGY R100 0.01 Q5 RJK0305DPB C25 0.22uF 1 LTM4677EY / LTM4650EY 4 Q6 RJK0305DPB TITLE: SCHEMATIC R99 0.01 1 2 3 4 5 1 2 3 ALL PARTS ON THIS PAGE ARE FOR DEMO ONLY, NOT NEEDED IN CUSTOMER DESIGN 3 1 2 3 4 5 2 3 4 5 D 5 A B C D DEMO MANUAL DC2481A-B SCHEMATIC DIAGRAM dc2481abf 17 DEMO MANUAL DC2481A-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 18 Linear Technology Corporation dc2481abf LT 0616 * 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