5 4 3 2 1 REVISION HISTORY E11 SVIN ECO C7 1uF 25V 1206 2.7V - 17V E8 D R7 VIN1 2.7V - 17V CIN1 15uF 35V 7343 C5 10uF 25V 1206 + 0 PGOOD1 14 8 + RUN1 SW1 16 3.3uH FB1 C 2 OFF 3 10 R1 619k 1% RUN2 JP2 SYNC SYNC CFF1 22pF C3 OPT 13 BURST PULSE-SKIP MODE/SYNC 1 2 3 4 5 6 4 0 2 3 4 JP7 1.8V E9 R5 OPT JP8 2.5V GND JP9 USER SELECT C INTVCC NC 15 RPG2 100k 1% PHASE 1 R3 196k 1% MODE/SYNC JP3 180 R2 309k 1% JP6 1.2V VOUT1 E2 C1 47uF 1206 R8 0 RSET1 619k 1% VIN2 5 PHASE PGOOD2 E6 6 PGOOD2 E7 JP4 VOUT2 ILIM 500mA 1 2 500mA CHAN2 ONLY 3 4 5 6 1A 7 ILIM SW2 JP5 B FB2 9 L2 R9 4.7uH 0 RSET2 619k 1% C2 47uF 1206 CFF2 22pF 1A C4 OPT B 11 E3 E10 12 INTVCC INTVCC VOUT1 1A L1 1 ON D VIN1 RUN2 CIN2 15uF 35V 7343 HAORAN W. PGOOD1 JP1 C6 10uF 25V 1206 APPROVED E4 3 3 OFF DATE 2-4-14 E5 2 E12 VIN2 2.7V - 17V 1 SVIN LTC3622EMSE 1 E13 R6 0 0805 2 PROD. RUN1 ON GND U1 DESCRIPTION 2 RPG1 100k 1% GND E1 REV INTVCC C8 1uF 3.6V R13 137k 1% INTVCC GND R14 84.5K 1% R15 OPT GND 17 JP10 3.3V NOTE: UNLESS OTHERWISE SPECIFIED A 1. ALL RESISTORS ARE IN OHMS, 0402. ALL CAPACITORS ARE IN MICROFARADS, 0402. CUSTOMER NOTICE 4 JP12 USER SELECT 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. HZ VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APP ENG. HAORAN W. APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT 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 JP11 5V 3 TECHNOLOGY 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only TITLE: SCHEMATIC DUAL WIDE VIN SYNCHRONOUS BUCK REGULATOR WITH ULTRA-LOW QUIESCENT CURRENT SCALE = NONE SIZE IC NO. N/A PCB NO. DATE: 2 LTC3622EMSE DEMO CIRCUIT 2004A SHEET 1 Friday, July 18, 2014 1 REV. 2 OF 1 A