5 4 3 2 1 ECO REV - 10nF 500V 1206 TP1A IN TP2A SOURCE TP3A OUT Q2A IPB027N10N3G E1A 3 3 1 2 Q1A IPB027N10N3G VOUT A E9A CSNUBB 100 5% 1210 10nF 500V 1206 E2B E8A 2 RSNUBB E1B E8B 2 TP4B GATE COUTA 2.2uF 100V 1210 LTC4359HDCB VSS JP1B SHDN OUT E3B SHDN B EXPOSED PAD R1A 1K 1206 ON 1 2 EXT 3 4 OFF 5 6 E7A R5B 100K 5 GND 1 2 DDZ9699T GATE C OUT U1B SHDN COUTB 2.2uF 100V 1210 LTC4359HDCB CFB 10nF 100V OPT VSS EXPOSED PAD R1B 1K 1206 E5B E6A 1 SOURCE VSS E4A 2 BAS521 OPT IN E10B VSS TP5A D4B 2 7 GATE U1A SHDN E5A 2 2 3 SOURCE 10nF 100V D2B SMAJ24A D3B 1 6 5 1 DDZ9699T CFA 10nF 100V OPT E10A VSS D R4B 10K 2 2 7 6 2 6 4 OFF 5 D3A BAS521 OPT 4 R5A 100K 2 3 3 VOUT B E9B C1B 1 10nF 100V 2 ON 1 D1B SMAJ58A D4A 1 2 1 IN EXT 3 2 3 R4A 10K 1 E3A Q1B IPB027N10N3G R3B 10 OHM C1A D2A SMAJ24A SHDN A TP3B OUT Q2B IPB027N10N3G DATE 1 D1A SMAJ58A JP1A SHDN TP2B SOURCE TP4A GATE 1 R3A 10 OHM C TP1B IN APPROVED MITCHELL LEE 05/01/2012 PRODUCTION 1 100 5% 1210 E2A VIN B 28V DESCRIPTION 3 1 CSNUBA 4 D RSNUBA 1 VIN A 28V REVISION HISTORY TP5B E6B E4B GND E7B VSS GND GND B B NOTE: LTC4359HDCB TOP MARK LFKF. ALL RESISTORS AND CAPACITORS ARE 0805 PACKAGE U.O.N. INPUT VOLTAGE LIMITS OPERATING 4.5V to 60V DC SURVIVAL -40V to 75V 500ms SURGE VIN - VOUT -65V to 100V -100V OUTPUT CURRENT CAPABILITY VIN MAXIMUM CONTINUOUS LOAD 10A 4.5V to 8V > 8V 20A CUSTOMER NOTICE 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. M.HAWKINS VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APP ENG. MITCHELL LEE APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. A THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 4 3 TECHNOLOGY 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: 28V/20A IDEAL DIODE AND SWITCH WITH REVERSE INPUT PROTECTION IC NO. LTC4359HDCB REV. DEMO CIRCUIT 1676A 05/01/2012 SHEET 1 3 1 OF 1 A