B A REVISION HISTORY LTC CONFIDENTIAL - For Customer Use Only L1 2.2uH LPO1704-222M VIN 5V 1 VOUT 12V 250mA 1 E2 D1 ZHCS400 3 1 1 C2 2.2uF 16V SHDN 4 R1 115K SHDN C5 1uF 16V DATE INITIATED APPROVED 02/13/01 2 MFR SPECS CONFIG DIAGRAM ERROR : CORRECT INDUCTOR PIN-OUT. 3/26/01 3 ADD R7; CHG L1, L2, L3. 6/6/01 4 CORR L2,L3 MFR#: WAS 92Y-153/5. R MV C5;CHG C4,D2,3; C6 TO C5 01/17/02 5 DEMO BOARD RELEASE 01/30/02 R2 13.3K 2 LT1930A GND 1 E4 2 C4 2.2uF 16V C3 10pF DESCRIPTION 3 FB GND E3 U1 5 C1 1uF 16V SW 2 VIN ON JP1 OFF REV 1 1 E1 ECO 2 BOOST C7 1uF 25V L2A 3.3uH CMD5D13-4371-T004 2 1 VOUT 12V 250mA 1 E6 D2 UPS140 1 VIN 10-16V 1 E5 R7 118K 1 R3 115K 1 U2 4 SHDN L3A 3.3uH CMD5D13-4371-T004 2 1 VIN 12V 1 4 L3B 3.3uH C12 1uF 16V 3 SEPIC VOUT -12V 250mA 1 E10 3 L2B 3.3uH 1 4 SHDN NFB GND 3 SHDN E11 U3 1 C15 2.2uF 16V SW 2 C14 1uF 16V VIN ON JP3 OFF 5 1 E9 C13 1uF 25V LT1930A 1 R4 13.3K 2 GND E8 C11 2.2uF 16V C10 OPT. 3 FB GND E7 5 C9 2.2uF 16V 4 SHDN C8 1uF 16V SW 3 2 VIN ON JP2 OFF E12 C16 OPT. C17 2.2uF 16V C18 2.2uF 16V C19 1uF 16V 3 R6 13.3K D3 UPS140 2 LT1931A GND 1 R5 105K 1 1 INVERTER 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 CONTRACT NO. APPROVALS DRAWN L.SANTOS DATE 02/07/01 TECHNOLOGY 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 Fax: (408)434-0507 TITLE CHECKED APPROVED SCHEMATIC, LT1930A/31A, 2.2MHz, SOT-23 DC/DC CONVERTER PCB ENGINEER DESIGNER SIZE CAGE CODE DWG NO DO NOT SCALE DRAWING B Wednesday, January 30, 2002 SCALE: NONE REV DC397A A FILENAME: 397A_r5.DSN A SHEET 5 1 OF 1