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dc1812af

DEMO MANUAL DC1812A

Quikeval interface

The DC1812A can be connected to a DC590 and used 

with the QuikEval software. The DC590 connects to a PC 

through USB. QuikEval 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 

column that displays accumulated charge since the start of 

the scan, voltage, current and temperature. A start button 

allows convenient polling of the registers.

Figure 3. LTC2943 QuikEval Interface

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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