5 4 3 2 1 SEE NOTE 4 OV PROTECTION E1 3 2 1 ON 0.01 1% 1206 OFF R2 357k 1% C2 2.2uF 6.3V 0805 20 C E11 9 FAULT E14 8 CHRG E15 3 CLPROG E10 4 CHGOFF 5 BSTOFF 24 15 VSYS 6 7 IGATE VSYS RST BSTFB PFO RSTFB FAULT SW CHRG SW CLPROG BAT CHGOFF BSTOFF E9 25 2 GND NTC R4 1.69M 5V IN BACKUP D R12 OPT R5 324k 1 R11 18 0 R13 10 22 21 OPT L1 2.2uH COILCRAFT XAL5030-222ME C E6 23 VBAT C3 10uF, 10V 0603 C7 0.1uF 0603 2A CHARGE SEE NOTE 3 R8 17 VIN 10k RNTC F2 E12 PFO C4 OPT E8 EXTNTC 10k 12 11 F1 OPT RST PFI 13 E13 19 CLN C6 D5 ORG 16 LTC4040EUFD GND F0 D4 ORG COUT2 100uF 10V 1210 E5 U1 R27 121k 1% 14 D3 RED R22 390 5% VIN D6 GRN R23 390 5% PROG GND R24 390 5% VSYS COUT1 100uF 10V 1210 GND OVSNS R21 390 5% E4 C9 0.1uF 10V JP6 E17 VSYS 3 3 7 6 5 2 2 R1 6.2k 0805 3 2 1 R7 LEDS 1 Q2 SiS424DN 8 VIN 1 VDD CIN1 0.1uF 50V 0805 E2 8 SiS488DN 7 6 5 4 GND D Q1 R25 1 5% 0805 4.8V - 5.5V 4 DCIN NTC JP1 E18 R6 1.00k 1% 0603 INT VDD VSYS EXT D1 BAT46WJ B B E16 R16 NOTES: UNLESS OTHERWISE SPECIFIED, ENCHG OFF 2. ALL CAPACITORS ARE 0603, X7R. 3. F2=1(LI-ION) F2=0(LIFEP04) 3.95V F1 F0 3.45V 0 0 4.00V 3.50V 0 1 4.05V 3.55V 1 0 4.10V A 3.60V VDD ENBST 1 1. ALL RESISTORS ARE 0402, 1%. 1 1 2 3 ON JP2 VDD F0 1 OFF 1 2 3 ON VDD 1 0 JP3 VDD VDD F1 1 2 2 3 3 JP4 CUSTOMER NOTICE F2 0 JP5 1 2 3 4. LIMITED BY Q1 VDS RATING. 5 4 3 GND E7 0 E19 PROG APPROVALS TECHNOLOGY TITLE: SCHEMATIC SIZE THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. OPT JP7 LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES. VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED APP ENG. CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. (DEFAULT) C5 0.1uF 1 1 EXTVDD N/A SCALE = NONE DATE: 2 IC NO. 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only BATTERY CHARGER BACKUP POWER MANAGER LTC4040EUFD24 DEMO CIRCUIT 2118A SHEET 1 Friday, May 01, 2015 1 REV. 4 OF 1 A