5 4 3 2 1 ECO REV - TP1 E2 E1 3 GND 1 FB 2 OUT SNS TMR ENOUT 11 FLT 13 12 SHDN 4 GND CTMR 47nF 100V TP5 E8 B C R2 10K 1% U1* GND/OV 7 WIDE VOLTAGE RANGE CONSTANT CURRENT LED DRIVER GATE * R1C 0 CG 47nF 100V 3 TP7 5 R6 1% 240 5% R1B 143K 1% TP2 VCC R11 * 2 RG 33 5% 0 5% R5 1% D3 GREEN R1A 118K 1% 10 R8 6 2 1 1 Q4 MMBT3904 C3 10nF D2 CMJ2700 1 Q2 PZTA42 (OPT) R9 100K (OPT) 3 C 1 R4B 140K 1% D4 GREEN 1 D1 SMAJ60A D 2 CL 33uF 50V R3 10 5% GND 2 R4C 0 C2 100nF 100V + 9 2 Q3 PZTA42 OUTPUT 2A E4 5% CSNUB 10nF 500V UV 1 11/11/2011 2 3 R4A 93.1K 1% 0.020 OHMS RSNUB 100 5% 2 R10 270K 5% DATE M.LEE 1 TP6 APPROVED E3 1 R7 1K 5% PRODUCTION RSNS 2 8 INPUT DESCRIPTION 1 TP4 Q1 FDB33N25 3 D TP3 REVISION HISTORY E5 E7 GND E6 B * ASSEMBLY OPTIONS ASS'Y TYPE U1 PIN 7 BEHAVIOR R5 R6 DC1935A-A LT4363IDE-1 GND LATCH OFF 28K 0 OHMS DC1935A-B LT4363IDE-2 OV AUTO RETRY 18.2K E13 GND 10K E14 E12 SHDN E11 FLT E10 ENOUT E9 TMR GND R1C,R4C ARE USED TO SELECT EITHER 12V OR 28V OPERATION NOMINAL INPUT R1C, R4C INPUT OPERATING RANGE A 12V 28V 0 OHMS OPEN 5.7V-14.7V INPUT DC SURVIVAL 80V INPUT 1ms TRANSIENT 250V OUTPUT REGULATION UV OV RETRY INHIBIT CUSTOMER NOTICE 12.4V-31.6V 16.3V 34.6V 5.6V 11.9V 15.5V 33.3V LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S 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 TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 4 3 APPROVALS TECHNOLOGY PCB DES. M.HAWKINS APP ENG. M.LEE TITLE: SCHEMATIC SIZE N/A SCALE = NONE 2 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only DATE: HIGH VOLTAGE SURGE STOPPER WITH CURRENT LIMIT IC NO. LT4363IDE-1,2 REV. DEMO CIRCUIT 1935A 11/11/2011 SHEET 1 1 1 OF 1 A