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dc1812af

DEMO MANUAL DC1812A

parts list

ITEm

QTy

REFEREnCE

PART DESCRIPTIon

mAnuFACTuRER/PART numBER

1

1

C2

CAP., CHIP X7R, 0.1µF 0603

AVX, 06033C104KAT2A

2

1

C3

CAP., X7R, 1.0µF, 100V, 10%, 1206

MURATA, GRM31CR72A105KA01

3

1

D1

LED, RED, LIGHT EMITTING DIODES

PANASONIC, LN1251CTR

4

1

D2

DIODE, BAT54C SOT23

DIODES INC.,BAT54C-7-F

5

4

E1-E4

TURRET, TESTPOINT .094"

MILL-MAX, 2501-2-00-80-00-00-07-0

6

5

E5-E9

TURRET, TESTPOINT .064"

MILL-MAX, 2308-2-00-80-00-00-07-0

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

R

SENSE

RES., CHIP, 0.1Ω 1/8W 1% 1206

IRC, LRC-LR1206LF-01-R100-F 

11

3

R6, R7, R8

RES., CHIP, 4.99k, 1%, 0603

NIC, NRC06J4991TRF

12

4

R2, R3, R4, R9

RES., CHIP, 10k, 5%, 0603

NIC, NRC06J103TRF

13

1

R5

RES., CHIP, 1k, 5%, 0603

VISHAY, CRCW06031K00JNEA

14

1

S1

SWITCH, SMT PUSH BUTTON  

PANASONIC, EVQPE105K

15

1

U2

I.C., SERIAL EEPROM TSSOP8

MICROCHIP, 24LC025-I/ST

16

1

FOR (J1)

CABLE ASSY., 8" STRIP

LINEAR RIBBON CABLE CA-2440

17

1

U1

I.C., BATTERY GAS GAUGE WITH I

2

C

LINEAR TECH., LTC2943CDD

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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