1 2 3 4 5 6 7 8 REVISION HISTORY V_CHRG / LD 2.7V - 5.5V E1 SENSE+ E3 E10 GND 1 2 3 BAT/CHRG QUICK EVAL U1 C1 0.1uF 1 PULL-UP 2 E5 VP R2 10K DATE SAL A. 12-04-14 REBUILD WITH CHANGE V_BAT A * SENSE- GND AL / CC SCL SDA 6 * 5 ASSY -A -B -C -D 4 EX PAD 7 E8 U1 LTC2941 LTC2942 LTC2941-1 LTC2942-1 GND SUFFIX R1 1 0.1 OHMS 2 0.1 OHMS 1-1 OPT 2-1 OPT 1 B D1 AL RED J1 2 6 4 7 5 MISO NC 8 3 GND C SDA/MOSI 8 C2 0.1uF 14 VCC S1 CC R9 100K VSS AL / CC 1 HD2X7-079-MOLEX 10 V+ EEVCC 11 5V EESCL 9 CS EESDA 12 SCK EEGND U2 24LC025-I / ST 6 SCL 5 SDA 7 WP 3 A2 2 A1 1 A0 R6 5.1K R7 5.1K R8 5.1K TP1 TP2 C 4 1 2 3 GND 2 JP2 QUICK EVAL DEMO ONLY GND E9 13 SDA AL LED CC PB R5 1K APPROVED E2 E7 AL / CC GND R4 10K 1 DESCRIPTION E4 VCC / SENSE+ E6 SCL B R3 10K 3 REV __ E11 * 1206 JP1 A SENSE- R1 ECO NOTES: UNLESS OTHERWISE SPECIFIED 1. ALL RESISTORS AND CAPACITORS ON THIS PAGE ARE 0603. CUSTOMER NOTICE APPROVALS LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES. VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APP ENG. APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. D THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 1 2 3 4 TECHNOLOGY KIM T. SAL A. 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only TITLE: SCHEMATIC D BATTERY GAS GAUGE WITH I2C SIZE IC NO. N/A SCALE = NONE 5 DATE: REV. LTC294XIDCB FAMILY 1 DEMO CIRCUIT 1496C Thursday, December 04, 2014 6 SHEET 7 1 8 OF 1