5 4 3 2 D3 D D2 CMDSH-3 OPT. Vin C8 0.1uF L1 BOOST 2 VIN 8 SYNC VSW C C1 2.2uF 25V 5 SYNC FB Vout 5V/3.3V@1A Vout 3 CDRH5D18-5R4 E1 C6 TAJ OPT. D CMDSH-3 U1 LT1767EMS8E 1 * 3V-25V 1 E2 R2 6 C7 0805 OPT. 31.6k SHDN GND VC 4 7 C5 Vfb C 100pF OPT. E4 R5 100k OPT. D1 UPS140 C3 6800pF SHDN R1 10.0k C2 10uF 6.3V C4 100pF E5 R3 2.2k GND GND E3 E6 EXPOSED PAD SOLDER TO GROUND B B 2 Vfb Vout JP1 1 3 5.0V 3.3V * VIN MINIMUM A 39.2k VOUT CONTRACT NO. 6.6 5 4.5 3.3 3.5 2.5 DRAWN 3 1.8 CHECKED APPROVALS June Wu DATE 2/12/02 See Quick-Start Guide. ENGINEER Keith S. Tuesday, August 06, 2002 3 TITLE A DESIGNER 4 TECHNOLOGY 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 Fax: (408)434-0507 LT1767EMS8E, 1.25MHz Wide Input Range Step Down DC/DC Converter APPROVED 5 R4 2/12/02 SIZE CAGE CODE DWG NO REV A DC502A SCALE: FILENAME: 2 SHEET 1 1 OF 1