DEMO MANUAL DC2069A. 1. Connect a 12V lead acid battery to the VBAT connector, making sure that the polarity is correct. A suitable battery.
DEMO MANUAL DC2069A LT8490 High Efficiency MPPT Battery Charger Controller Description Demonstration circuit 2069A features LT®8490, a high performance buck-boost converter that implements an MPPT function and flexible charging profiles suitable for most battery types such as flooded and sealed lead acid batteries and Lithium-Ion batteries, and can operate from input voltages above, below or equal to the battery voltage. The demo board is configured for a 17V to 54V input voltage range and the power source can be a solar panel with 36 to 72 cells (up to 200W) or a DC voltage source. Two input connectors are provided. An LTC4359 ideal diode controller protects the DC power supply output from being back fed from the solar panel. This allows, for example, that a 24VDC supply is plugged in while a solar panel with higher voltage is being used to power the circuit. On-chip logic provides automatic true power point tracking for solar powered applications. The MPPT function not only continuously tracks the maximum power point, it is able to select the correct maximum on the power curve to increase power harvested from the panel during partial shade conditions, when multiple peaks occur on the power curve. During periods of low light, a low power mode allows the charger to deliver a small charge current even if there is not enough light for the MPPT function to operate. The demo board output is set up for charging a 12V SLA battery with up to 16.6A charge current. Two charge configuration headers are provided so the user can select different charge algorithms. There are two onboard LEDs that display information on the charge stage, and they will blink fault messages if the charger shuts down because of a fault. A simple serial interface also sends out status bytes that can be interpreted by external circuitry. An RJ25 modular jack can be used to connect an external NTC temperature sensor mounted at the battery. This allows temperature compensation of the charge voltage, which is important for lead acid batteries. The same connector can be used for remote sensing of battery voltage, to compensate for voltage drops in long battery cables. The LT8490 data sheet gives a complete description of the device, operation and application information. The data sheet must be read in conjunction with this demo manual for DC2069A. The LT8490EUKJ is assembled in a 64-lead (7mm × 11mm) plastic QFN package with a thermal pad underneath the chip. Proper board layout is essential for maximum thermal performance. Design files for this circuit board are available at http://www.linear.com/demo/DC2069A 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 Specifications are at TA = 25°C SYMBOL VIN PARAMETER Input Supply Range VOUT Charge Voltage IIN Maximum Input Current IOUT Maximum Output Current FSW Switching Frequency EFF Efficiency at DC input CONDITIONS Note: Output Power Is Limited by Input Current Limit When VIN < 24V (See Figure 2) VIN > 24V, VOUT = 12V VIN = 28V, VOUT = 14V, IOUT = 15A VIN = 48V, VOUT = 14V, IOUT = 15A VIN = 24V, VOUT = 14.2V, IOUT = 8A MIN TYP MAX UNITS 17 30 54 V 14.2 V 10 A 16.6 A 200 kHz 96.3 % 95.6 % 97.3 % dc2069afb 1 EFFICIENCY (%) CURRENT (A) DEMO MANUAL DC2069A Performance Summary DISSIPATION (W) 100 20 99 18 98 16 EFFICIENCY 97 14 96 12 95 10 94 8 93 DISSIPATION 6 92 4 91 2 90 0 0 2 4 6 8 10 12 14 16 18 CHARGE CURRENT (A) DC2069A F01 Figure 1. Efficiency as a Function of Charge Current. VIN = 28V, VOUT = 14.2V 18 IOUT 16 14 12 10 8 IIN 6 4 2 0 10 15 20 25 30 35 40 45 50 55 INPUT VOLTAGE (V) DC2069A F02 Figure 2. Input and Output Currents as a Function of Input Voltage. VOUT = 13.6V 2 dc2069afb DEMO MANUAL DC2069A Quick Start Procedure 1. Connect a 12V lead acid battery to the VBAT connector, making sure that the polarity is correct. A suitable battery size is a 150Ah 12V deep cycle sealed lead acid battery, but also smaller 12V lead acid batteries can be used for testing the charging functions. Use a short battery cable that is rated for 15A or higher. 2. Connect the solar panel to the PANEL IN connector, making sure that the polarity is correct. A suitable panel is a 250W 60 cell solar panel, but any panel with 36 to 72 cells (54V maximum open circuit voltage) can be used. 3. Point the solar panel towards sunlight and monitor the MPPT charger function under different conditions, using ampere meters and voltmeters and other test equipment as needed. 4. The charger will also work with a DC power supply connected to the DC IN connector. Disconnect the solar panel before turning on the DC supply. (The charger can operate from both power sources simultaneously. However, the MPPT function will be disabled while there is DC voltage on the DC IN input, so the solar panel may not be operating at its maximum power point if the charger is also powered from the DC IN connector.) A suitable supply is a 24Vdc supply that can deliver at least 12A, but any DC power supply that has an output voltage in the range 10V to 54V and is able to deliver 250W power or 12A current can be used for evaluation. 5. Note that the charger will not start unless the output voltage is above 4.5V. This means that if the battery is replaced by an active programmable load during evaluation, a small power supply needs to be connected across the load to start the charger. A small 9V battery with a diode in series works fine. 6. Read the LT8490 data sheet for more detail on the function of the circuit and how to change the charge algorithm. dc2069afb 3 DEMO MANUAL DC2069A Parts List ITEM QTY REFERENCE Required Circuit Components 1 1 C12 2 2 C13, C47 3 2 C14, C15 4 5 C41, C42, C43, C44, C46 5 3 C45, C79, C58 6 4 C48, C49, C50, C51 7 1 C55 8 2 C56, C57 9 1 C59 10 2 C60, C61 11 1 C62 12 1 C63 13 1 C65 14 2 C66, C73 15 2 C67, C68 16 1 C69 17 2 C83, C84 18 1 C85 19 2 C87, C90 20 2 D1, D2 21 1 L1 22 1 M1 23 1 M2 24 2 M3, M4 25 1 R2 26 1 R3 27 5 R5, R8, R9, R23, R24 28 1 R11 29 1 R13 30 1 R14 31 1 R15 32 1 R16 33 1 R44 34 1 R47 35 1 R48 36 1 R49 37 1 R50 38 1 R54 39 1 R55 40 1 R56 41 1 R57 PART DESCRIPTION CAP., X7R, 1nF, 16V, 20%, 0603 CAP., X5R, 0.22uF, 16V, 10%, 0603 CAP., X7R, 3.3nF, 16V, 20%, 0603 CAP., X7R, 2.2µF, 100V 10%, 1210 EP-cap, 33µF, 63V, 20% CAP., X7R, 10µF, 35V 10%, 1210 EP-CAP, 150µF, 25V, 20% CAP., X5R, 2.2µF, 10V, 10%, 0603 CAP., X7R, 0.1µF, 16V, 10%, 0603 CAP., X7R,4.7nF, 16V, 10%, 0603 CAP., NP0, 220p, 16V, 5%, 0603 CAP, X7R, 6.8nF, 50V, 10%, 0603 CAP., X7R, 1µF, 100V, 10%, 1210 CAP., X7R, 1.0µF, 16V, 10%, 0603 CAP., X7R, 0.068µF, 16V, 10%, 0603 CAP., X5R, 4.7µF, 6.3V, 10%, 0603 CAP., X7R, 0.47uF, 16V, 10%, 0603 CAP., C0G, 1000pF, 100V, 10%, 1206 CAP., X7R, 0.01µF, 100V, 10%, 0603 ULTRA FAST RECTIFIER SINGLE, SOD-123F IND, 4.7µH MOSFET, N-CHANNEL, 60V PG-TDSON-8 MOSFET, N-CHANNEL, 60V PG-TDSON-8 MOSFET, N-CHANNEL, 25V PG-TDSON-8 RES., CHIP, 196k, 0.1W, 1%, 0603 RES., CHIP, 8.06k, 0.1W, 1%, 0603 RES., CHIP, 10, 0.1W, 1%, 0603 RES., CHIP, 110k, 0.1W, 1%, 0603 RES., CHIP, 113k, 0.1W, 1%, 0603 RES., CHIP, 35.7k, 0.1W, 1%, 0603 RES., CHIP, 1.2, 0.25W, 1%, 1206 RES., CHIP, 10k, 0.1W, 1%, 0603 RES., SENSE, 0.004, 2W, 1%, 2512 RES., CHIP, 215k, 0.1W, 1%, 0603 RES., CHIP, 21.0k, 0.1W, 1%, 0603 RES., CHIP, 124k, 0.1W, 1%, 0603 RES., CHIP, 4.99k, 0.1W, 1%, 0603 RES., CHIP, 3.48k, 0.1W, 1%, 0603 RES., CHIP, 5.90k, 0.1W, 1%, 0603 Res., SENSE, 0.005, 1W, 1%, 2512 RES., CHIP, 0.003, 2W, 1%, 2512 4 MANUFACTURER/PART NUMBER AVX, 0603YC102MAT4A AVX, 0603YD224KAT2A AVX, 0603YC332MAT4A AVX, 12101C225KAT2A SUNCON, 63HVH33M MURATA, GRM32ER7YA106KA12L SANYO, 25HVH150M AVX, 0603ZD225KAT2A AVX, 0603YC104KAT2A AVX, 0603YC472KAT2A AVX, 0603YA221JAT2A AVX, 06035C682KAT2A AVX, 12101C105KAT2A AVX, 0603YC105KAT2A AVX, 0603YC683KAT2A AVX, 06036D475KAT2A MURATA, GRM188R71C474KA88D AVX, 12061A102KAT2A MURATA, GRM188R72A103KA01D CENTRAL SEMI., CMMR1U-02 TR COILCRAFT, SER2915L-472KL INFINEON, BSC028N06NS INFINEON, BSC016N06NS INFINEON, BSC010NE2LSI PANASONIC, ERJ-3EKF1963V VISHAY, CRCW06038k06FKEA VISHAY, CRCW060310R0FKEA VISHAY, CRCW0603110KFKEA VISHAY, CRCW0603113KFKEA PANASONIC, ERJ-3EKF3572V VISHAY, CRCW12061R20FKEA VISHAY, CRCW060310K0FKEA SUSUMU, RL3264SW4-004M-F-T5 VISHAY, CRCW0603215KFKEA PANASONIC, ERJ-3EKF2102V PANASONIC, ERJ-3EKF1243V PANASONIC, ERJ-3EKF4991V VISHAY, CRCW06033K48FKEA VISHAY, CRCW06035K90FKEA PANASONIC, ERJM1WTF5M0U PANASONIC, ERJM1WTF3M0U dc2069afb DEMO MANUAL DC2069A Parts List ITEM QTY 42 1 43 1 44 1 45 1 46 2 47 1 48 1 49 1 Optional Components 50 1 51 1 52 1 53 1 54 1 55 1 56 1 57 1 58 3 59 1 60 1 61 3 62 2 63 3 64 3 65 3 66 6 67 1 68 1 69 1 70 0 71 3 72 1 73 1 74 1 75 1 76 2 77 2 78 1 79 6 80 1 REFERENCE R62 R63 R64 R65 R67, R71 U1 C74 C76 C77 D10 D12 D14 D15 D16 D19, D20, D21 F1 F1 JP1, JP3, JP4 XJP1, XJP4 J1, J2, J3 J1, J2, J3 J1, J2, J3 J1, J2, J3 J4 L2 M5 M1-1, M2-1, M3-1, M4-1 (OPT) Q4, Q13, Q14 Q6 R26 R6 R12 R46, R94 R17, R19 R21 R22, R60, R66, R69, R100, R101 R84 PART DESCRIPTION RES., CHIP, 3.3, 0.1W, 5%, 0603 RES., CHIP, 1.10k, 0.1W, 1%, 0603 RES., CHIP, 3.01k, 0.1W, 1%, 0603 RES., CHIP, 30.1k, 0.1W, 1%, 0603 RES., CHIP, 53.6k, 0.1W, 1%, 0603 IC., BATTERY CHARGE CONTROLLER, 64-QFN FAB, PRINTED CIRCUIT BOARDS STENCIL (TOP AND BOTTOM IMAGES) CAP., X7R, 0.1µF, 16V, 10%, 0603 CAP., X7R, 2.2uF, 100V, 10%, 1206 CAP., X7R, 0.01µF, 16V, 10%, 0603 LED, GREEN, 0603 LED, RED, 0603 DIODE, TVS UNI-DIR 70V 400W SMA DIODE, TVS UNI-DIR 24V 400W SMA DIODE, ZENER 12V 150MW SOD523 DIODE, BAV99 SOT23 FUSE FUSE HOLDER 4 PIN 0.100 SINGLE ROW HEADER SHUNT, 0.1" CENTER HOUSING, +PIN, RED HOUSING, PIN, BLACK STAPLES FOR PCB ASSY. RIGHT ANGLE PCB CONTACTS MODULAR JACK IND, 0 0603 MOSFET, N-CHANNEL, 100V POWER 56 MOSFET, N-CHANNEL NPN TRANSISTOR, SOT23 P-CH MOSFET, 50V, SOT23 RES., CHIP, 10, 0.1W, 1%, 0603 RES., CHIP, 3.32k, 0.1W, 1%, 0603 RES., CHIP, 1.3k, 0.1W, 1%, 0603 RES., CHIP, 10k, 0.1W, 1%, 0603 RES., CHIP, 100, 1W, 1%, 2512 RES., CHIP, 10, 1/8W, 1%, 0805 RES., CHIP, 0, 0.1W, 0603 RES., CHIP, 215k, 0.1W, 1%, 0603 MANUFACTURER/PART NUMBER PANASONIC, ERJ-3GEYJ3R3V VISHAY, CRCW06031K10FKEA PANASONIC, ERJ-3EKF3011V VISHAY, CRCW060330K1FKEA VISHAY, CRCW060353K6FKEA LINEAR TECH., LT8490EUKJ#PBF DEMO CIRCUIT 2069A STENCIL DC2069A AVX, 0603YC104KAT2A AVX, 12061C225KAT2A AVX, 0603YC103KAT2A ROHM, SML-512PW (A) ROHM, SML-512UW DIODES INC., SMAT70A-13-F DIODES INC., SMAJ24A-13-F DIODES INC., DDZ9699T-7 DIODES INC., BAV99-7-F LITTELFUSE, 142.6185.5306 LITTELFUSE, 178.4265.0002 SAMTEC, TSW-104-07-L-S SAMTEC, SNT-100-BK-G ANDERSON POWER, 1327 ANDERSON POWER, 1327G6 ANDERSON POWER, 114555P2 ANDERSON POWER, 1377G12 TE CONNECTIVITY, 5555165-1 VISHAY, CRCW06030000Z0ED FAIRCHILD, FDMS86101 DIODES INC., MMBT3904-7-F DIODES, BSS84-7-F VISHAY, CRCW060310R0FKEA VISHAY, CRCW06033K32FKEA VISHAY, CRCW06031K30FKEA VISHAY, CRCW060310K0FKEA PANASONIC, ERJ-1TNF1000U PANASONIC, ERJ-6ENF10R0V VISHAY, CRCW06030000Z0ED VISHAY, CRCW0603215KFKEA dc2069afb 5 DEMO MANUAL DC2069A Parts List ITEM QTY REFERENCE 81 3 R96, R97, R99 82 3 R51, R58, R86 83 1 R52 84 2 R53, R85 85 1 R61 86 1 R68 87 1 R73 88 2 R75, R77 89 2 R83 90 1 R89 91 1 R90 92 1 R91 93 1 R92 94 1 R93 95 1 SW1 96 1 U2 97 1 U3 PART DESCRIPTION RES., CHIP, 4.99k, 0.1W, 1%, 0603 RES., CHIP, 1, 0.1W, 1%, 0603 RES., CHIP, 1k, 0.1W, 1%, 0603 RES., CHIP, 100k, 0.1W, 1%, 0603 RES., CHIP, 33.2k, 0.1W, 1%, 0603 RES., CHIP, 102k, 0.1W, 1%, 0603 RES., CHIP, 11.3k, 0.1W, 1%, 0603 RES., CHIP, 549, 0.1W, 1%, 0603 RES., CHIP, 27.4k, 0.1W, 1%, 0603 RES., CHIP, 19.1k, 0.1W, 1%, 0603 RES., CHIP, 80.6k, 0.1W, 1%, 0603 RES., CHIP, 41.2k, 0.1W, 1%, 0603 RES., CHIP, 59.0k, 0.1W, 1%, 0603 RES., CHIP, 11.5k, 0.1W, 1%, 0603 SWITCH, TACTILE SPST-NO 0.05A 12V IC., IDEAL DIODE CONTROLLER, DFN-6L IC., OP AMP, SO8 MANUFACTURER/PART NUMBER PANASONIC, ERJ-3EKF4991V VISHAY, CRCW06031R00FKEA PANASONIC, ERJ-3EKF1001V PANASONIC, ERJ-3EKF1003V VISHAY, CRCW060333K2FKEA VISHAY, CRCW0603102KFKEA VISHAY, CRCW060311K3FKEA VISHAY, CRCW0603549RFKEA VISHAY, CRCW060327K4FKEA PANASONIC, ERJ-3EKF1912V PANASONIC, ERJ-3EKF8062V PANASONIC, ERJ-3EKF4122V VISHAY, CRCW060359K0FKEA VISHAY, CRCW060311K5FKEA WÜRTH, 434 123 050 816 LINEAR TECH., LTC4359CDCB#TRPBF LINEAR TECH., LT1636CS8#PBF 6 dc2069afb Schematic Diagram 6 5 4 3 2 1 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. * PANEL IN 36cell - 72cell +2 VIN1 R56 .005 1W 2512 M1 BSC028N06NS 8 L1 4.7µH SER2915L-472KL M4 BSC010NE2LSI 8 R57 .003 2W 2512 VBAT 12V Lead acid F1 2+ 1 - J1 C45 + C58 C79 33µF 63V + C78 OPT C52 DNI 1210 C41 2.2µF 100V 1210 C53 DNI 1210 C42 2.2µF 100V 1210 C88 OPT 0805 C54 C64 DNI 1210 C43 2.2µF 100V 1210 C44 2.2µF 100V 1210 67 21 5 3 4 R58 1 5 M2 BSC016N06NS M2-1 OPT 6 87 4 65 7 8 M3 BSC010NE2LSI 76 5 7 6 5 M3-1 OPT 4 21 67 3 5 4 R22 0 C48 C49 10uF 35V 1210 C72 C75 OPT 1210 C89 OPT 0805 C70 C71 OPT 1210 1 C50 10uF 35V 1210 C51 10uF 35V 1210 2 + C80 C81 C82 OPT 2 C55 + 150uF 25V 1 30A 1 * VBAT 12V SLA - J2 PGND 4 TG1 4 3 4 3 4 TG2 2 1 3 12 1 2 1 2 3 NOTES (UNLESS OTHERWISE SPECIFIED): 1- ALL SMD CAPACITORS ARE 16V. 2- ALL SMD CAPACITORS AND RESISTORS ARE 0603. SW1 SW2 R15 1.2 1206 R25 OPT 1206 C85 1000pF 100V 1206 C86 OPT 1206 A TG1 7 M1-1 6 5 1 OPT 4 2 D18 OPT D22 3 TG1 OPT R38 OPT D2 CMMR1U-02 R62 2 1 BG1 BG2 R60 0 R39 OPT D24 OPT D23 OPT A R51 1 R41 OPT 21 R43 OPT R44 0.004 1W 2512 D25 D26 OPT OPT 3 7 6 54 M4-1 OPT R59 OPT D27 OPT D28 OPT TG2 R23 10 C83 0.47uF R21 10 0805 3 2 R87 OPT 1 Q5 OPT R18 OPT 0805 D20 BAV99 D21 BAV99 EXTVCC * SEE DEMO MANUAL FOR DETAILS L2 0 ohm 0603 R24 C84 10 0.47uF C90 0.01uF 3.3 2 1 D1 CMMR1U-02 SW1 C47 0.22uF R8 R9 10 10 C14 C12 C15 3.3nF 3.3nF C13 0.22uF SW2 VDD C87 0.01uF 100V Q11 R17 100 R99 1W 3 100V 1nF R6 R12 R100 0 1 OPT 4.99K 2512 INTVCC 3.32K 1.3K 2 U1 TG1 32 SW1 31 BOOST1 33 BG1 23 CSP 13 CSN 12 BG2 25 BOOST2 27 SW2 29 TG2 28 VIN LT8490 3 C46 2.2µF 100V R68 102K 1% 44 CSNIN 45 CSPIN CSPOUT 42 R4 OPT R88 OPT R20 OPT 2 R85 100K 1 Q6 BSS84 3 3 CSNOUT 41 R2 196K 1210 R66 0 R3 8.06K R54 3.48K R55 5.90K R63 1.1K C65 1µF 1210 100V EXTVCC C66 1uF C57 2.2µF ( 6.3V ) C56 2.2µF VDD ( 3.3V ) INPUT FOR OPTIONAL VOLTAGE SOURCE C69 4.7µF R86 1 C73 1uF 46 VIN 1 FBIR 15 FBIN 54 VINR 6 FBIW 40 EXTVCC 7 INTVCC 24 GATEVCC 4 VDD 14 LDO33 58 AVDD 10 IMONIN 53 IIR FBOUT 16 FBOR 57 FBOW 5 SWEN 8 SWENO 49 ECON 48 STATUS 51 FAULT 2 SRVO_FBIN 35 SRVO_IIN 36 SRVO_IOUT 37 SRVO_FBOUT 38 N/C 60 R73 11.3K R71 53.6K C68 0.068uF STATUS FAULT 1 1 2 D12 3 RED 4 FAULT 2 JP2 2 1 D8 YELLOW ENABLE OPT D10 GREEN STATUS 2 1 R13 113K R101 01 3 Q13 MMBT3904 2 R16 10.0K R79 OPT R83 27.4K R84 215K 17 IMONOUT 64 IOR 50 IOW CLKOUT CLKDET TEMPSENSE 63 CHARGEDCFG2 61 CHARGEDCFG1 Q4 MMBT3904 1 2 2 3 M5 FDMS86101 8 1 7 2 6 3 5 VIN1 R48 21.0K VIN C60 4.7nF 16V R27 65 GND 55 GND 59 GND 62 GND 9 MODE 11 SHDN 22 RT 21 SYNC N/C 52 OPT R77 R75 remote sense 549 549 circuit for R5 10 INTVCC 18 VC 19 SS 3 1 7 53.6K 56 20 battery voltage. U3 LT1636/SO C77 0.01uF 2 3 C59 0.1uF R47 215K 0 R64 3.01K R65 30.1K 3+ 6 2- 1 Q14 MMBT3904 2 R67 R69 5 8 4 VDD * DC IN 17V - 54V +2 1 J3 R53 100K R61 33.2K D16 D14 SMAT70A DDZ9699T 4 3 12V 2 1 IN SOURCE GATE OUT D15 5 SHDN SMAJ24A VSS VSS 67 U2 LT4359CDCB R52 1K C76 2.2uF 100V 1206 4 R11 110K OPT R26 10 R14 35.7K SW1 1 STATUS 2 SGND 3 VDD 4 FAULT R50 C62 220p 4.99K C63 6.8n 25V R46 C67 10K 0.068µ VDD R89 19.1K 1 1 2 2 3 3 R90 80.6K 4 4 R49 124K C61 4.7nF R93 11.5K Remove R94 when external battery temp sensor is used C74 R94 0.1uF 10K R92 59.0K R91 41.2K R97 4.99K D19 BAV99 R96 4.99K R19 100 1W 2512 J4 1 2 3 4 5 6 REMOTE SENSE JP1 JP4 1 JP3 1 CONFIG1 CONFIG2 CUSTOMER NOTICE 1630 McCarthy Blvd. Milpitas, CA 95035 LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A Phone: (408)432-1900 www.linear.com CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO TECHNOLOGY Fax: (408)434-0507 LTC Confidential-For Customer Use Only VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED TITLE: SCHEMATIC CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT HIGH EFFICIENCY MPPT PERFORMANCE OR RELIABILITY. CONTACT LINEAR BATTERY CHARGER CONTROLLER TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. SIZE IC NO. LT8490 REV. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND N/A DEMO CIRCUIT 2069A 5 SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. DATE: Thursday, April 03, 2014 SHEET 1 OF 1 6 5 4 3 2 1 DEMO MANUAL DC2069A dc2069afb 7 DEMO MANUAL DC2069A 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 8 Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 www.linear.com dc2069afb LT 0915 REV B · PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 2014