5 4 3 2 1 R1 2010 0.001 0.5W 3 UV OUT 8 GATE 11 1 E4 D GND1 LED2 LN1261CAL RED E5 E6 STATUS1 FAULT1 13 EP GND REV 9 E7 LED1 LN1351C GREEN U1 LTC4352CDD R8 3K 0805 VOUT1 C 3 2 1 VCC1 OPT R7 3K 0805 FAULT 6 2 R10 100K C4 0.1uF 50V OPT STATUS 5 4 OV 7 R9 OPT VCC R6 OPT SOURCE 12 VIN 1 R5 100K R4 0 R3 47K C9 100uF 35V SANYO 35CE100FS OPT 2 C2 0.1uF 50V E2 8 7 6 5 1 4 OPT D1 SMAJ17A OPT C Q1 Si4438DY 3 2 1 4 C3 0.1uF 50V 1 R2 100 OPT E3 3 2 1 CPO 10 GND1 Q2 Si4438DY 2 D 8 7 6 5 2 VIN1 E1 18V MAX C1 0.1uF 50V JP1 REV1 HIGH LOW R11 2010 0.001 0.5W C5 0.1uF 50V A NOTES: UNLESS OTHERWISE SPECIFIED 1. ALL RESISTORS ARE IN OHMS, 0402. ALL CAPACITORS ARE IN MICROFARADS, 0603. JP2 4 E12 OUT 8 1 E13 STATUS2 FAULT2 EP GND REV GND2 LED4 LN1261CAL RED REV2 HIGH LOW CUSTOMER NOTICE 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. CONTRACT NO. APPROVALS DRAWN: 3 TECHNOLOGY KIM T. TITLE: CHECKED: APPROVED: ENGINEER: VLADIMIR O. DESIGNER: THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 E11 B 2 4 GATE 11 R18 3K 0805 VOUT2 13 E14 LED3 LN1351C GREEN U2 LTC4352CDD 3 2 1 VCC2 OPT R17 3K 0805 FAULT 6 2 R20 100K C8 0.1uF 50V C10 100uF 35V SANYO 35CE100FS OPT STATUS 5 4 OV 7 R19 OPT VCC R16 OPT SOURCE 12 VIN 1 3 UV R13 47K 1 1 R15 100K E9 8 7 6 5 OPT R14 0 C6 0.1uF 50V OPT 9 B Q3 Si4438DY 3 2 1 OPT D2 SMAJ17A CPO 10 C7 0.1uF 50V 3 2 1 4 E10 Q4 Si4438DY 2 GND2 R12 100 OPT 8 7 6 5 2 VIN2 E8 18V MAX SCHEMATIC LOW VOLTAGE IDEAL DIODE CONTROLLER WITH MONITORING SIZE A DATE: 2 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 Fax: (408)434-0507 LTC Confidential-For Customer Use Only DWG NO. DC1329A-1 * LTC4352CDD Thursday, July 10, 2008 SHEET 1 REV A-1 1 OF 1 A