REVISION HISTORY ECO REV DESCRIPTION 0 VIN 8V - 40V DATE APPROVED 1st PROTOTYPE T1 E1 7 C1 6.8uF 50V E2 GND C2 6.8uF 50V C3 82uF 50V + 6 8 D1 C6 C4 0.1uF 630V CMR1U-10 9 VCC R4 100K U1 LT3751EUFD 5 DONE E6 6 C7 R8 80.6K CHARGE 1 1% 11 1uF R10 R11 845K 1% 2 80.6K 1% 3 GO R3 4 1.33K 1% 10 R6 E5 STOP R2 0 Ohm R5 100K 19 CHARGE 1 (Opt) R1 40.2K 1% VCC R17 JP1 RVTRANS DONE CHARGE VCC 14 RVOUT 16 RDCM 17 HGATE 13 20 UVLO1 LVGATE 12 1 OVLO1 CSP 10 2 UVLO2 CSN 9 3 OVLO2 FB 8 4 FAULT CLAMP 7 442K 1% VCC RBG DCT20EFD-U32S003 21.0K 1% Q1 Si7846DP (Opt) R16 0.012 1% VCC R23 OUTPUT BLEEDER 100K R13 33K R14 33K R15 33K 2 R24 0 Ohm E7 R12 100K 1 DISCHARGE 0 Ohm (Opt) 21 E4 GND GND R18 VOUT 300V C5 + 400uF 330V Rubycon 3 40.2K 1% R7 R9 E3 VOUT 12 5 NORMAL OPERATION FAULT Q2 2SD2568TLQ 3 JP2 R19 R20 R25 0 Ohm C10 (Opt) 1206 0 Ohm (Opt) (Opt) E8 VCC 8V - 24V VCC U2 LT3010EMS8E C8 0.47uF 50V 8 VIN OUT 1 VCC 1 E9 GND 5 SHDN GND 9 SENSE GND 4 2 EXT 2 3 R21 34.0K 1% C9 1uF WARNING! SHOCK HAZARD. OPERATION BY HIGH VOLTAGE TRAINED PERSONNEL ONLY. INT JP3 R22 4.99K 1% APPROVALS 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. DRAWN: Rudy Bautista ENGINEER: Wei Gu LINEAR TECHNOLOGY CORPORATION 1630 McCARTHY BLVD MILPITAS, CA. 95035 (408)432-1900 (408)434-0507 (FAX) www.linear.com LTC Confidential For Customer Use Only Title:: LT3751EUFD Capacitor Charger Controller with Regulation APPROVED: CHECKED: Date: Wednesday, February 04, 2009 SD Document Number Rev Demo Circuit 1322A C:\ORCADWIN\CAPTURE\1322A\1322A_REV1.DSN Sheet 1 1 of 1