5 4 3 2 1 REVISION HISTORY D1 PDS540 R10 5.1K 1206 1 GND 2 18 22 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 SENSE 4 BAT 3 9 8 NTC RNG/SS 1 35 C1 1uF 50V 0805 SW GND SW 31 37 GND 32 34 VIN SW PIN R9 147k 15 CHRG PIN R11 20k OPT SW 26 21 C7 0.68uF C13 0.68uF SW FAULT 25 PIN R5 10K 3 3 JP2 ACPR 16 2 20 C/10 SW 17 PIN 2 CLP 19 1 1 2 JP1 E4 WURTH 744314650 GND TIMER C11 10uF 50V 1210 C3 10uF 50V 1210 L1 6.5uH VIN R2 5.1K 1206 R3 5.1K 1206 C6 10uF 50V 1210 D5 GRN PIN D3 RED 10 D4 GRN ACPR 33 R7 64.9k D6 CMHZ4697 10V FAULT PIN CHRG E2 SHDN DATE 12-18-10 D C12 10uF 50V 1210 29 RUN APPROVED K. SZOLUSHA SYSTEM LOAD 30 R13 100k + R12 10k C DESCRIPTION PRODUCTION FABRICATION E3 VIN C2 22uF 50V 20% Q1 Si7611DN 4 R1 OPT D REV - 0.015 1206 CLN E1 VIN 12V - 32V ECO D2 C CMPSH1-4 R4 0.024 1206 R8 0.05 1206 U1* E5 C8 100uF 10V 1210 20% C4 10uF 10V 0805 10% C9 0.022uF 16V BAT VFLOAT* 4A C10 0.022uF 16V E6 GND 1 2 3 BAT GND NTC-EXT J1 (OPT) DF3-3P-2DSA E7 B B NTC E8 RNG / SS R6 20k * C5 0.68uF ASSY U1 VFLOAT * -A LT3651EUHE - 8.4 8.4V -B LT3651EUHE - 8.2 8.2V 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. 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 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 4 3 APPROVALS TECHNOLOGY PCB DES. NC APP ENG. K. SZOLUSHA 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 4A HIGH VOLTAGE 2 CELL LI-ION BATTERY CHARGER SIZE IC NO. N/A SCALE = NONE 2 DATE: LT3651EUHE - 8.4 / - 8.2 DEMO CIRCUIT 1484A - A / B 12-18-10 REV. 4 SHEET 1 1 OF 1 A