1 2 REVISION HISTORY LTC CONFIDENTIAL - For Customer Use Only ECO REV DESCRIPTION DATE PROTO 2 APPROVED 03-19-02 > VIN D2 D3 1 E1 C9 OPT 6032 C2 2.2uF C8 0.22uF X7R 0603 OPT CMDSH-3 25V 1206 X5R U1 CMDSH-3 SHDN 11 E5 SYNC 14 Boost Vsw Vsw shdn FB Vc Sync 1 8 9 16 17 GND GND GND GND GND E4 Vin Vin L1 5V/3.3V @ 2.0A 2.7uH D63CB C6 OPT E2 A 3 4 VOUT 2 + 2 N/C N/C N/C 5 6 D1 B230A SMA 0805 R1 31.6k 1% 0603 12 A 13 3.3V 5V 7 10 15 C3 3300pF X7R 0603 LT1765EFE R3 4.7k 5% 0603 1 JP1 3 R4 39.2k 1% 0603 2 [1] 3V to 25V VOUT C4 100pF NPO 0603 C7 GND C5 22uF X5R 6.3V 62pF NPO 0603 R2 10.0k 1% 0603 GND E3 E6 NOTES: UNLESS OTHERWISE SPECIFIED, B [1] 3V IS IC MINIMUM INPUT VOLTAGE. MINIMUM INPUT VOLTAGE REQUIRED TO MAINTAIN VOUT MAY BE HIGHER. SEE QUICKSTART GUIDE FOR DETAILS. UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN INCHES TOLERANCE ON ANGLE - - 2 PLACES - - - 3 PLACES - - INTERPRET DIM AND TOL PER ASME Y14.5M -1994 THIRD ANGLE PROJECTION B CONTRACT NO. APPROVALS DRAWN MEI DATE 11-02-01 TECHNOLOGY 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 Fax: (408)434-0507 TITLE CHECKED SCH,LT1765EFE WIDE INPUT RANGE STEP-DOWN CONVERTER APPROVED ENGINEER DESIGNER SIZE CAGE CODE DWG NO DO NOT SCALE DRAWING 1 Tuesday, May 07, 2002 SCALE:NONE REV 2 DC476A A FILENAME: 476A-1.PCB 2 SHEET 1 OF 1