5 4 3 2 1 Vin E8 T1 510-1017 D1 1 1 C1 100uF 6.3V 2 D2 ZHCS1000 D3 Q3 Si3434DV ZHCS1000 3 R18 330K Q1 Si3434DV JP2 V Cell 4.2V 4.1V C 4 C4 C5 1nF 1500pF 6 5 2 1 B Vout 3.3V@400mA E1 C14 100nF + C3 R3 169k 1% C2 22pF R5 174k 1% 12 PGND 11 RGTDR VDD 10 9 R6 100k 1% R11 200k C C6 1uF Vbias1 13 BGTDR 14 BATT2 REG 15 CMDSH-3 BATT1 MODE 16 2 8 WA TIMER 17 7 Vreg Vbat 18 6 LDODRV Vbias2 19 5 LDOFB 4 Vc GND 20 Isense 21 3 REGFB CAOUT 22 2 PROGT OVP 23 1 PROG SS 24 D4 C7 0.22uF C8 C11 220pF JP3 ON/OFF ON OFF 1uF C10 3.3nF C9 100nF B R7 100k R8 51.1k 33uF 6.3V R4 100k 1% R12 10 VDD U1 LTC1980EGN 2 3 Q2 FDC640P R14 0 VDD GND E7 R2 100k R13 opt. R1 0.05 1206 1% 3 AUX OUT E5 D Caution: Make sure JP1 & JP2 are properly configured before connecting battery. 1 R15 221k C13 100nF E3 BAT- 3 3 1 JP1 VDD # of Cells 2 Cells 2 1 Cell C12 22uF 10V BAT+ 1A Imax 1 GND E6 4 1 2 5 6 - WALL ADAPTER 4V-6.5V C15 330pF R17 36 C16 330pF 6 5 2 1 R16 22 4 B320A 4 + 3 2 D E2 3 3 Vin J1 R9 402k R10 3.32k GND E4 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 CIRUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. A THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 4 3 CONTRACT NO. APPROVALS DRAWN June Wu DATE 5/13/02 CHECKED A TITLE LTC1980EGN, Regulator / Battery Charger Controller APPROVED ENGINEER John Shannon TECHNOLOGY 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 Fax: (408)434-0507 5/13/02 DESIGNER SIZE CAGE CODE Wednesday, January 07, 2004 SCALE: 2 FILENAME: DWG NO REV DC532A SHEET 1 A 1 OF 1