1 2 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 customers 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 DESCRIPTION 3 6 1 2 TP2 A 2 5 Danger High Voltage 320V +STROBE CAP 3 CIN 4.7uF 1 6.3V 3 4 APPROVED 06/06/03 D3 GSD2004S T1 KIJIMA W03-073 TP1 DATE PROTO 1 1.8V-6V Vbatt A REV COUT 22nF 630V VCC JP1 CONNECT RFB 2 DISCONNECT 60.4K 1 U1 1 2 3 4 5 2.3V-6V Vcc TP3 R1 10K GND TP5 JP2 CVCC 4.7uF 6.3V RREF VBATT RFB VCC GND CT CHARGE DONE ISEC ISW CHARGE TP7 10 9 8 7 6 DONE TP6 C2 1uF 6.3V RDONE 100K -STROBE CAP TP4 3 CHARGE RREF 1.96K LT3420-1EMS ON 2 B 1 OFF CONTRACT NO. APPROVALS DRAWN MEI DATE 06/06/03 CHECKED APPROVED ENGINEER DESIGNER Wednesday, October 29, 2003 LTC CONFIDENTIAL - For Customer Use Only 1 TECHNOLOGY B 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 Fax: (408)434-0507 TITLE SCH, LT3420-1EMS STROBE CAPACITOR CHARGER, HIGH VOLTAGE SUPPLY SIZE CAGE CODE SCALE: DWG NO FILENAME: 690A-2.DSN 2 REV DC690A SHEET 1 1 OF 1