5 4 3 2 1 E7 PGood 9 Ith 10 SD/RT 2 Rs2 1M Rset 324K JP3 3 4.7M Rfb3 412K, 1% Rfb2 698K, 1% JP2 Rfb4 280K, 1% Opt. 3.3V E4 GND OFF ON E6 RPG RFB1 RSW CFFW C1 COUT2 RC CC GND COUT1 CIN2 CIN1 L1 U1 C 1.8V 2.5V E5 GND B Cout3 0.1uF 1 7 Rsd 2 E2 Rfb1 887K, 1% 1% Rfb5 Opt. R1 10K SYNC /MODE 6.3V Cffw 10pF Opt. Cc 1000pF Burst Mode C C1 Opt. Cout2 1uF 2 PGND Sy/Mode Rc 16.2K 1 2 SGND Cbyp Opt. Rsw Opt. 8 1 Vfb 1 SVin 4 PGood 7 3 JP1 8 0 Rs1 1M Pulse-skip 3 100K 3 Rfilt 2.2uH D1 Cout1 22uF Opt. 6 Cin1 10uF 6.3V Cin2 1uF Opt. Vout 3.3V/2.5V/1.8V 1.25A Cout4 Opt. E3 4 SW 5 Cin3 Opt. PVin 1 6 Rpg L1 2 Vin E1 VIN 2.65V-5.5V Cin4 47uF 16V D U1 LTC3411EMS 5 D B RSET PCB SILKSCREEN CONTRACT NO. APPROVALS DRAWN A June Wu DATE 6/28/01 TECHNOLOGY TITLE ENGINEER Tom Gross A LTC3411EMS CHECKED APPROVED 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 Fax: (408)434-0507 Buck Regulator: 2.65V-5.5V->1.8V, 2.5V, or [email protected](max) 6/28/01 SIZE CAGE CODE DESIGNER DWG NO REV A DEMO DC441A Monday, March 11, 2002 5 4 3 SCALE: 2 FILENAME: SHEET 1 1 OF 1