5 E1 2 +VIN E2 CHRG LED1 LN1351C R8 1 E3 CHRG 5 CHRG VCC 10 2 R1 330 U1 LTC4062EDD E6 EN 7 JP2 ICHG-2 C JP1 TERMINATION METHOD 1 2 3 4 3 C/5 TIMER C2 0.1UF,16V E5 9 IDET = 100mA B HIGH LOW ICHG-2 CHARGE CURRENT CHARGE CURRENT PROG R2 374K 1% GND 8 IDET R5 1K 1% 1A 100mA 500mA 50mA 200mA 100mA 100mA 50mA C 500mA 100mA 250mA 25mA C/5 100mA 100mA 50mA 25mA CUSTOMER NOTICE R7 715K 1% COMP OUT C COMP IN BAT 1 JP5 COMP EXT BAT C3 2.2UF,6.3V 0603 COMP LED2 LN1851C (ORANGE) R6 470 CONTRACT NO. 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 CIRUIT 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. 5 C/5 E9 BAT [email protected]/1A E10 GND + B IDET C/10 C 2. INSTALL SHUNTS ON JP1-JP5 PIN 1 AND 2. IN+ 2 JP4 IDET C/10 100mA SEE TABLE C/5 1. ALL RESISTORS ARE IN OHMS, 0402. ALL CAPACITOR ARE 0402. E4 IDET = C/10 IDET 100mA NOTES: UNLESS OTHERWISE SPECIFIED A R4 2K 1% E7 E8 11 R3 1K 1% JP3 ICHG-1 HIGH LOW SEE TABLE 6 OUT 4 C CURRENT MONITOR C/5 SEE TABLE ENABLE 2 TIMER EXT ITERM D C1 1UF,16V 0603 (GREEN) ICHG-1 1 1 GND D 3 1 +VIN 4.3V-8V 4 4 3 APPROVALS DRAWN: CHECKED: APPROVED: ENGINEER: FRAN H. DESIGNER: TECHNOLOGY KIM T. TITLE: 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 Fax: (408)434-0507 LTC Confidential-For Customer Use Only SCHEMATIC A SINGLE CELL LI-ION BATTERY CHARGER WITH COMPARATOR SIZE DWG NO. A DATE: DC789A-1*LTC4062EDD Thursday, January 13, 2005 2 SHEET 1 1 REV A OF 1