5 4 3 2 1 REVISION HISTORY D1 PDS540 OPT C12 4.7uF 50V 1210 D D3 RED R3 5.1K 1206 R2 5.1K 1206 APPROVED DATE K. SZOLUSHA 12-18-10 GND 18 22 31 37 GND 34 VIN 32 VIN 15 26 CHRG SW 14 27 SHDN SW 13 24 TIMER SW 12 28 ILIM SW 38 36 RT SW 7 23 GND SW 11 6 GND BOOST 5 RNG/SS SENSE 4 BAT 3 8 1 35 NTC SW PIN 16 FAULT PIN R9 147k SW 25 21 C13 0.68uF ACPR 20 C7 0.68uF R11 20k OPT 2 PIN R5 10K 3 3 JP2 SW 17 PIN C/10 CLP 19 2 JP1 C11 4.7uF 50V 1210 D E4 1 PIN 1 1 TIMER 2 E3 GND 2 WURTH 744314330 10 E2 GND RUN DESCRIPTION PRODUCTION FABRICATION L1 3.3uH 29 SHDN C3 4.7uF 50V 1210 R10 5.1K 1206 R12 10k C C6 4.7uF 50V 1210 D5 GRN 30 R7 44.2k D4 GRN ACPR 33 100k FAULT VIN D6 CMHZ4697 10V CHRG PIN R13 + 9 C2 22uF 50V 20% CLN Q1 Si7611DN 4 SYSTEM LOAD 0.015 1206 C1 1uF 50V 0805 SW 6.5V - 32V REV R1 VIN SW E1 ECO D2 CMPSH1-4 C R4 0.024 1206 E5 BAT R8 0.05 1206 * U1 C8 100uF 10V 1210 20% C4 10uF 10V 0805 10% C9 0.022uF 16V VFLOAT * 4A C10 0.022uF 16V E6 GND 1 2 3 B BAT GND NTC-EXT J1 (OPT) B DF3-3P-2DSA E7 NTC E8 * R6 20k OPT A NOTES: UNLESS OTHERWISE SPECIFIED 1. ALL RESISTORS ARE IN OHMS, 0402, 1%, 1/16W. 2. ALL CAPACITORS ARE IN MICROFARADS, 0402, 10%, 10V. 3. INSTALL SHUNTS ON JUMPERS AS SHOWN. 5 C5 0.68uF RNG/SS ASSY U1 -A LT3651EUHE - 4.2 4.2V -B LT3651EUHE - 4.1 4.1V CUSTOMER NOTICE LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL 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 VFLOAT APPROVALS TECHNOLOGY PCB DES. NC APP ENG. 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only K. SZOLUSHA TITLE: SCHEMATIC 4A HIGH VOLTAGE LI-ION BATTERY CHARGER SIZE IC NO. N/A SCALE = NONE 2 REV. LT3651EUHE - 4.2 / - 4.1 DEMO CIRCUIT 1362A-A/B DATE: 12-18-10 4 SHEET 1 1 OF 1 A