A 4 B C D E1 +VIN 1V-5V REVISION HISTORY SD PC AD FD 0 DESCRIPTION 0 0 0 DATE APPROVED 1st Release 2 R4 from 1.10M to 1.07M 4 2 3 2 Value Change R1,R2,R3,R4 & C3 Add "E" Version Add "F to H" Version Obsolete "A" and "C" Version. 5 2 4 2 Obsolete "B" and "D" Version. 3 12/01/06 F. Hoffart 08/17/07 F. Hoffart 4 04/02/09 F. Hoffart 06/05/09 F. Hoffart L1 + 3 * C1 (Opt) "B" Case U1 E2 GND 3 C2 1uF 10V * VIN 3 D1 SW 1 (Opt) E3 4 SHDN SHDN VOUT 6 R1 1.58M 1% C3 47pF JP4 VOUT 2 GND FB 5 R4 499K 1% 2 3 OFF R2 301K 1% JP1 R3 1.96M 1% C5 1uF 10V C4 10uF 10V E4 1.8V / 3.3V / 5V +VOUT E5 GND 1.8V 1 ON 2 E REVISION # This circuit is proprietary to Linear Technology and supplied for use with Linear Technology parts. Customer Notice: Linear Technology has made a best effort to design a circuit that meets customer-supplied specifications; however, it remains the customers 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 Applications Engineering for assistance. JP2 3.3V 2 JP3 5V BOARD ASSEMBLY U1* 1 DC1053A-E DC1053A-F DC1053A-G DC1053A-H LTC3526LEDC LTC3526LBEDC LTC3526LEDC-2 LTC3526LBEDC-2 L1* freq 4.7uH 4.7uH 2.2uH 2.2uH 1MHz 1MHz 2MHz 2MHz APPROVALS Mode DRAWN: Rudy Bautista Burst No Burst Burst No Burst ENGINEER: B 1630 McCARTHY BLVD MILPITAS, CA. 95035 (408)432-1900 (408)434-0507 (FAX) Title APPROVED: CHECKED: Date: A Fran Hoffart LINEAR TECHNOLOGY CORPORATION C Friday, June 12, 2009 SD LTC3526L www.linear.com LTC Confidential For Customer Use Only 500mA Synchronous Boost Converter Document Number Rev Demo Circuit 1053A C:\ORCADWIN\CAPTURE\1053A\1053A_REV5.DSN D 1 Sheet E 5 1 of 1