5 D 4 3 2 1 REVISION HISTORY 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 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 Applications Engineering for assistance. ECO REV DESCRIPTION 1 DATE PROTO 2 APPROVED 04/06/05 Change, Title, Currrent load 09/26/05 D C1 U1 * 1uF 4 5 C+ VIN 2 C6 OPT. C2 0.22uF 16V 1 VIN * E1 ON C GND JP1 VOUT 2 VIN VOUT SHDN C4 4.7uF 6.3V GND 1 7 E2 C5 0.22uF 16V GND C E5 3 GND * VOUT VOUT 3 C3 1uF 6 OFF E3 C- SHDN E4 R1 3.32M 1% B B * VERSION U1 -A LTC3240EDC-3.3 -B LTC3240EDC-2.5 VIN VOUT 2.5V - 5.5V 3.3V/150mA 1.8V - 5.5V 3.3V/40mA 1.8V - 5.5V 2.5V/60mA CONTRACT NO. APPROVALS DRAWN mei CHECKED A DATE 08/06/04 TECHNOLOGY TITLE APPROVED ENGINEER DESIGNER Thursday, October 20, 2005 5 4 3 SIZE 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 Fax: (408)434-0507 SCH, LTC3240EDC-3.3/-2.5, STEP-UP/STEP-DOWN CHARGE PUMP DC/DC CONVERTER CAGE CODE SCALE: DWG NO FILENAME: 2 903A-2.DSN REV DC903A SHEET A 2 1 1 OF 1