Vin 2.5V-5.5V GND 1 C2 4.7uF 6.3V ON 4 JP1 RUN 2 1 OFF 3 E1 U1 * L1 Vin SW 3 RUN Vfb 6 R1 4.7M GND E2 C4 10pF C1 2.2uF 6.3V R2 374K PGND 2 E3 4.7uH 5 Vout 1.8V@250mA C3 0.1uF R3 301K E4 GND GND E5 * VERSION TABLE Assembly Type GND E6 U1 DC870A-A LTC3410ESC6 DC870A-B LTC3410BESC6 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 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. CONTRACT NO. APPROVALS DRAWN June Wu DATE 12/29/04 CHECKED APPROVED ENGINEER Kevin Huang DESIGNER Friday, October 28, 2005 12/29/04 TECHNOLOGY 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 Fax: (408)434-0507 TITLE LTC3410ESC6/LTC3410BESC6, 2.25MHz High Efficiency Synchronous Step-Down Converter SIZE CAGE CODE SCALE: FILENAME: DWG NO REV A DC870A SHEET 1 OF 1