5 4 3 2 1 REVISION HISTORY ECO REV D1 2 VEXT E1 1 D XAL5030-222ME 9 SVSYS 3 CMPIN 3 1 R22 1K LTC3110EUF JP2 RUN 1 R1 24 10 1 C15 0.1uF VMID C10 OPT 11 R5 R6 1.02Meg OPT 1 7 C6 0.1uF C VCAP PROG R10 1.91Meg 3 FBVCAP 5 6 8 4 R18 931K FB MODE CHRGB CAPOK JP5 FBVCAP 24 R14 1.5Meg BURST 2 FIXED FREQ. R17 1 Meg 22 R15 845K GND E8 GND E9 R19 23 E11 1 Meg GND GND GND JP4 MODE E12 E13 25 3 DIR SW1 15 1 EXT.DIR 16 SGND 3 2 2.5V 5.0V 2 DIR CMPOUTB AUTO 2 1 C13 470pF OPT 4 CHRGB R20 1 Meg C11 10uF 20 3 JP3 PROG C14 OPT 19 2 2A R12 280K E10 0.1uF VMID VCAP 1A R16 100K B GND E5 OFF 21 C9 RSEN R8 6.04K R13 2.0K R11 OPT C5 5F OPT E6 R7 6.04K 0.5A R9 200K RUN VSYS + VCAP MAX. 5.5V C8 5F OPT ON 2 3 R4 576K VSYS 5 3 12 VSYS R2* 0.1uF + C3 HS230F 1.2F 5.5V BAL 1 2 V+ R3 634K E3 2 14 SW2 13 U1 D2 BAV70W 1 2 3 C4 1uF SW2 E4 18 L1 2.2uH 1 C2 47uF 1210 SW1 100uF 6.3V OPT 7343 C1 22uF OPT 1210 17 + C17 SW1 100uF 6.3V OPT 7343 GND C 4-29-15 MBR230LSFT + C16 JP1 FB DATE VICTOR K. E2 1.8V - 5.25V 3.2V 1.8V APPROVED VSYS VSYS D DESCRIPTION PRODUCTION 2 B GND CAPOK CMPOUTB EXT.DIR E14 R21 OPT CUSTOMER NOTICE A NOTES: UNLESS OTHERWISE SPECIFIED 1. ALL RESISTORS ARE 0603. ALL CAPACITORS ARE 0603. APPROVALS 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 APP ENG. APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. VICTOR K. 5 4 3 TITLE: SCHEMATIC 2A, BIDIRECTIONAL BUCK-BOOST DC / DC REGULATOR AND CHARGER / BALANCER SIZE N/A 2. * R2 IS OPTIONAL. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. TECHNOLOGY HZ 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only SCALE = NONE 2 DATE: IC NO. LTC3110EUF DEMO CIRCUIT 1964A REV. 2 Wednesday, April 29, 2015 SHEET 1 1 OF 1 A