4 3 2 1 REVISION HISTORY 4 E1 ON OFF R1 C1 1uF 25V 0603 10 % E2 GND JP1 VIN REV - 1 DESCRIPTION 4.2V 4.1V 4.0V 3 C5 150uF 6.3V C2 20% OPT C4 100uF 6.3V 1210 20% OPT NTCBIAS WARNING: DO NOT FLOAT, 2.7V JUMPER JP3 MUST BE INSTALLED 3.2V 8 VCC ADJ HBO E8 4 HBO E7 5 25 mils clearance 1 LBSEL Charged 1 NTCBIAS 2 NTC JP6 D1 Charging 2 HBO R7 Charging 1K 5% Charged R3 10k E4 25 mils clearance NTC 3 GND HBO LED JP5 JP3 LBSEL E3 4 C3 100uF 6.3V 1210 20% OPT R2 200 3 DATE 04-28-10 VCC 40mA C2 0.22uF 25V 0805 U1 LTC4071EDDB GEORGE B. E9 499 1% 2512 JP2 VFLOAT APPROVED PRODUCTION FAB 25 mils clearance VIN 5V - 25V ECO E6 GND GND 6 9 BAT 7 BAT 40mA J1 DF3-3P-2DSA 1 2 3 2 BAT GND ENTC 2 OPT E5 GND JP4 NTC R6 INT EXT 0 R4 0 1 UNLESS NOTED: RESISTORS: OHMS, 0402, 1%, 1/16W CAPACITORS: uF, 0402, 10%, 50V CUSTOMER NOTICE R5 10k 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. NOTE: C3,C4 AND C5 PCB FOOTPRINTS CAN ACCOMODATE 1206,1210,1812 SMD FOOTPRINTS. 4 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 3 2 APPROVALS PCB DES. NC APP ENG. GEORGE B. TECHNOLOGY TITLE: SCHEMATIC LI - ION / POLYMER SHUNT BATTERY CHARGER SYSTEM WITH LOW BATTERY DISCONNECT SIZE N/A 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 DATE: IC NO. REV. LTC4071EDDB DEMO CIRCUIT 1702A Wednesday, September 08, 2010 1 SHEET 1 1 OF 1 1