5 4 3 E2 2 1 E1 R1 0 VIN C6 4.7uF 50V 1210 0805 7.5V - 32V + CHRG D3 RED C3 4.7uF 50V 1210 SYSTEM LOAD E8 D4 GRN 1 1 R2 5.1K 1206 R3 5.1K 1206 1 * U1 2 C12 0.01uF 0603 50V (OPT) VIN 12 SW CLP BOOST 11 SENSE 10 3 LT3650EDD 4 C CHRG 2 FAULT BAT 9 1 2 3 JP1 SHDN 1 3 R5 100K NTC 8 TIMER GND RNG/SS 6 13 D2 CMPSH1-4 R4 0.05 1206 1/4W E4 R8 0.1 1206 1/2W 7 1 2 VFLOAT * C4 10uF 16V 0805 10% C10 0.022uF 16V 2A C11 0.022uF 16V E5 GND JP2 3 0 C BAT C9 100uF 6.3V 1206 20% 1 5 0 D1 CMSH3-40MA C1 1uF 50V 0805 2 R7 1.0Meg 2 IHLP-2525CZ-01 1 E3 GND D GND L1 6.8uH 2 C2 22uF 50V 20% D 1 FAULT 1 2 3 C8 0.1uF J1 (OPT) BAT GND NTC DF3-3P-2DSA RUN UVLO JP1 1 1 0 JP2 1 0 X NTC C/10 E7 2 * VERSION TABLE Assembly Version U1 DC1229B - A LT3650EDD - 4.2 4.2V DC1229B - B LT3650EDD - 4.1 4.1V C7 0.68uF VFLOAT * Unless noted: Resistors: Ohms 0402 1% 1/16W Capacitors: 0402 10% 10V A 4 RNG / SS JP3 3 TIMER 5 B E6 SHDN 1 B C5 0.1uF R6 (OPT) 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. 3 CONTRACT NO. APPROVALS DRAWN J.Drew DATE 1/19/09 CHECKED TECHNOLOGY TITLE APPROVED ENGINEER J.Drew 1/19/09 DESIGNER Wednesday, April 01, 2009 2 A LT3650EDD - 4.2 / LT3650EDD - 4.1 2A Monolithic Li-Ion Battery Charger SIZE CAGE CODE SCALE: 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 Fax: (408)434-0507 FILENAME: DWG NO DC1229B - A/B SHEET 1 1 OF REV B 1