5 4 3 2 1 REVISION HISTORY ECO REV __ SENSE+ BAT54C +5V 2 E3 GND APPROVED DATE PRODUCTION S. AFZAL 09-18-13 SENSE- RSENSE 0.1 E1 V_CHRG/LD D 3 DESCRIPTION E2 V_BAT 1206 C3 1uF 1206 U1 E4 * * D GND SEE OPTION TABLE R5 1K 1 D2 7 E6 SCL SCL 5 1 SDA AL LED CC PB C +5V GND E5 +5V E9 J1 HD2X7-079-MOLEX U2 24LC025-I /ST 1 2 C2 0.1uF 6 CS 4 SCK/SCL 7 MOSI/SDA 5 MISO 10 EEVCC 9 EESDA 11 EESCL 12 EEGND 14 AUX 1 2 3 4 A0 VCC A1 WP A2 SCL VSS SDA R7 4.99K 8 R6 4.99K R8 4.99K 7 B 6 WP 5 VSS 13 8 3 GND GND GND B 6 S1 PANASONIC-EVQPE105K E8 V+ 5V ALCC C CC AL / CC AL / CC 2 D1 AL (RED) 1 2 3 8 2 JP1 SENSE- GND 4 E7 SDA SENSE+ GND R9 10K 3 R4 10K EXPAD R3 10K 9 R2 10K 1 GND 3 A * U1 V-BAT ASSY -A LTC2943CDD 0-20V -B LTC2944CDD 0-60V NOTE: UNLESS OTHERWISE SPECIFIED 1. ALL RESISTORS AND CAPACITORS ARE 0603 5 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. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 4 3 TECHNOLOGY LT LEO C. SCALE = NONE 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 MULTICELL BATTERY GAS GAUGE WITH TEMPERATURE, VOLTAGE AND CURRENT MEASUREMENT SIZE IC NO. REV. LTC294XCDD N/A 3 DEMO CIRCUIT 1812A DATE: Wednesday, September 18, 2013 2 SHEET 1 1 OF 1 A