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dc1812af

DEMO MANUAL DC1812A

Linear Technology  Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417  

(408) 432-1900 

 

FAX

: (408) 434-0507 

 

www.linear.com

 

LINEAR TECHNOLOGY CORPORATION 2013

LT 1013 • PRINTED IN USA

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 applica-

tion engineer.

Mailing Address:

Linear Technology

1630 McCarthy Blvd.

Milpitas, CA 95035

Copyright © 2004, Linear Technology Corporation

Summary of Contents for DC1812A

Page 1: ...g in the internal status register L LT LTC LTM Linear Technology and the Linear logo are registered trademarks and No Latency and QuikEval are trademarks of Linear Technology Corporation All other tra...

Page 2: ...istor Use SENSE and SENSE test points to read voltage across the sense resistor 3 Connect a 2 7V to 5 5V battery charger supply across V_CHRG LDandGNDforbatterychargemeasurement Up to 500mA supplied t...

Page 3: ...Eval automatically detects the demo board and brings up the LTC2943 evaluation software interface Figure 3 Interface Design The QuikEval interface consists of three tabs along with a columnthatdisplay...

Page 4: ...arging Temperature Display Data from the temperature ADC register U and V is dis played here It can be displayed in two formats Celsius and Kelvin Start Button Click on start to begin a polling routin...

Page 5: ...ending on user input The current plot displays the change in current with respect QuikEval Interface to time in mA If the current exceeds 1A then the graph auto scales to display the current in units...

Page 6: ...SE should be sized according to the following relationship RSENSE 0 340mAh 216 QBAT 50m Figure 5 Battery Gauge Tab where QBAT is in mAh Similarly for applications with a small battery but high maximum...

Page 7: ...m Voltage Li ion Only button gives an estimate oftheinitialACRvaluebysensingthevoltageandambient temperature of the battery being used It compares the voltage and temperature values to the discharge c...

Page 8: ...LTC2943 the I2C status will display an error and the corresponding LED will turn red Otherwise the status is good and the LED remains green Sense Resistor By default the demo board is populated with a...

Page 9: ...LTC2943 defaults to automatic mode which enables full time voltage current and temperature ADC conversions Selecting scan mode enables voltage current and temperature conversions cycles every 10s Aft...

Page 10: ...8 2 00 80 00 00 07 0 7 1 JP1 HEADER 3 PIN 1 ROW 079CC SAMTEC TMM 103 02 L S 8 1 XJP1 SHUNT 079 CENTER SAMTEC 2SN BK G 9 1 J1 HEADERS VERTICAL DUAL 2 7 079CC MOLEX 87831 1420 10 1 RSENSE RES CHIP 0 1 1...

Page 11: ...ccurate and reliable However noresponsibilityisassumedforitsuse LinearTechnologyCorporationmakesnorepresenta tion that the interconnection of its circuits as described herein will not infringe on exis...

Page 12: ...DING 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 CONS...

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