5 4 3 2 1 REVISION HISTORY ECO REV __ CSNUB 500V 10nF 1 2 SHDN 7 CUV 10nF 200V SHDN E9 GND E11 E12 B 1. ALL RESISTORS AND CAPACITORS ARE 0805. ASSY TYPE DC2062A-A DC2062A-B U1 LT4363IDE-1 LT4363IDE-2 PIN 7 GND OV BEHAVIOR LATCH OFF AUTO RETRY COV OPT 10nF ROV4 OPT 140k CUSTOMER NOTICE THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 3 24.5V 3A 3.8A ROV6 0 OHM 10k APPROVALS LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES. VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APP ENG. APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. 4 OUTPUT OUTPUT REGULATION MAXIMUM LOAD CURRENT CURRENT LIMIT NOTE: UNLESS OTHERWISE SPECIFIED * 1 EP E14 CTMR2 OPT [2] ISO-7637-2 PULSE 5A -30V TO +50V 5V TO 23.5V 4.2V 19V A 5 E13 CTMR1 6.8uF 6.3V FLT ENOUT TMR GND INPUT DC SURVIVAL DC OPERATING UV OV RETRY INHIBIT R2 10k GND B SURGE RIDE-THROUGH 2 3 SNS UV 200V RUV6 10k FB 1 13 * C DFN12DE-4X3 TMR REVERSE BATTERY PROTECTION OV/GND 8 12 * COV ENOUT ROV6 E10 [1] GND R1 182k U1 LT4363IDE-1/-2 11 LED DRIVER J4 OUT 6 D7 DDZ9702S 15V 4 R8 240k OPT GND R12 240k 1206 RLED1 3k 1206 E8 GATE D1 SMAJ60A 68V 9 C4 10nF 200V SUNCON 50CE33LX 1 1 C2 100nF 100V D5 BAV3004W 2 2 DLED BAV3004W 1 RLED4 3.3k 1206 OUTPUT [2] LED1 ZSM-T3020-R GREEN CG 47nF 100V VCC D 2 1 D3 BAV3004W 1 R11 240k 1206 CL 33uF 50V R3 10 2 RLED3 200 2 C J3 OUTPUT RG 33 R10 10k 1206 1 OUT RSNS 0.013 GATE FLT D4 BAV3004W 3 3 Q4 PZTA42 1 1 Q5 MMBT3904 R9 240k 1206 2 RLED2 249k 1206 J2 1206 D2 BAV3004W 1 2 4 GND * R7 620 1206 10 E5 DGATE ROV4 5 Q3 MMBT3904 2 3 SNS 1206 RUV4 23.2k 1206 DATE 04-11-13 E3 3 VCC 2 1 LED3 ZSM-T3020-R RED 2 2 1 1 2 LED2 ZSM-T3020-G GREEN D6 DDZ9702S 15V DRAIN 8 7 6 5 SAL A. 1210 Q1 FQA140N10 1 3 2 1 INPUT 4 INPUT J1 2 INPUT [1] Q2 FDS86240 APPROVED PRODUCTION RSNUB 100 1812 E2 D DESCRIPTION 2 TECHNOLOGY KIM T. SAL A. 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only TITLE: SCHEMATIC 12V SYSTEM ISO-7637-2 SURGE STOPPER SIZE B SCALE = NONE 2 DATE: IC NO. LT4363IDE-1/-2 REV. 2 DEMO CIRCUIT 2062A 04/11/2013, 12:38 PM SHEET 1 1 OF 1 A