5 C1 TBD 3528 E2 3 2 1 SEPERATE L1 4.7uH SUMIDA CDRH2D18/HP D 2 VOUT1 1 D1 OPT 3V 3.3V 5V SW1 1 SW2 1 5 E7 JP4 HD2X3-079 C7 33PF C5 10uF 10V 0805 C6 1uF 16V 0603 VOUT1 3V/3.3V/5V E8 C GND 1 3 5 JP3 E6 11 SHDN1 8 SHDN2 FB1 VOUT2 12 R1 750k R4 499k R2 130k R3 715k 1.8V 2.85V 3.3V E5 4 E9 2 4 6 JP2 VOUT2 3 ON 2 1 OFF D2 OPT U1 LTC3535EDD 2 4 6 SUMIDA CDRH2D18/HP 2 C4 2.2UF 16V 0805 L2 4.7uH 10 E4 C SHDN2 C2 2.2UF 16V 0805 VIN1 C3 TBD 3528 VOUT1 3 ON 2 1 OFF SHDN1 1 E3 2 GND INPUT PARALLEL JP1 D VIN2 0.7V - 5V 2 E1 7 GND 3 VIN2 VIN1 0.7V - 5V 4 JP5 HD2X3-079 C8 10uF 10V 0805 C9 1uF 16V 0603 E10 GND 1 3 5 C10 33PF VOUT2 1.8V/2.85V/3.3V GND FB2 13 6 3 GND GND B B 9 R8 499k R5 255k R6 432k R7 191k CONTRACT NO. APPROVALS NOTE: UNLESS OTHERWISE SPECIFIED A DRAWN: 1. ALL RESISTORS ARE IN OHMS, 0402. ALL CAPACITORS ARE IN MICROFARADS, 0402. CHECKED: APPROVED: ENGINEER: FRAN H. DESIGNER: TECHNOLOGY KIM T. TITLE: SCHEMATIC 4 3 A DUAL 550mA SYNCHRONOUS BOOST CONVERTER SIZE DWG NO. A DATE: 5 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 Fax: (408)434-0507 LTC Confidential-For Customer Use Only Tuesday, November 18, 2008 2 REV DC1483A * LTC3535EDD SHEET 1 1 A OF 1