5 4 3 2 ECO REV 1 2 - - 1 REVISION HISTORY DESCRIPTION APPROVED 1st PROTOTYPE PRODUCTION EDWIN LI EDWIN LI DATE May 20, 2011 Jun 06, 2013 D D U1 LT3081EFE VIN VIN 2.8V - 36V E1 + E2 12 13 14 15 CIN2 10uF 50V 1210 CIN1 10uF 50V IN IN IN IN OUT OUT OUT OUT OUT OUT OUT OUT OUT GND E3 10 IMON R13 499 1% R12 (Opt) C VOUT IMON ILIM 1 2 3 4 5 8 9 16 17 E4 VOUT ADJ., R8 (Opt) 1.5A MAX R9 499 1% 0805 C1 22uF 16V 1206 E5 GND 6 E6 SET TEMP 11 TEMP C2 (Opt) 7 C3 (Opt) C R14 1k C4 0.01uF B R1 1 2 1.2V 3 4 1.5V 5 6 1.8V 7 8 2.5V R4 3.3V 49.9k 1% 9 10 11 12 13 14 24.3k R2 30.1k 1% 36.5k 100k 66.5k 1. ALL CAPACITORS AND RESISTORS ARE 0603. 2. JUMPERS SHOWN IN DEFAULT POSITIONS 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. RB VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APP ENG. EDWIN LI APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. C:\PADS PROJECTS\1870A(LT3081EFE)\SCH\1870A_REV2.DSN THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 4 1% (Opt) CUSTOMER NOTICE NOTES: UNLESS OTHERWISE SPECIFIED. B R7 1% JP1 A 1% R5 R6 5V USER SELECT 1% R3 3 TECHNOLOGY LTC CONFIDENTIAL - FOR CUSTOMER USE ONLY TITLE: SCHEMATIC SIZE N/A SCALE = NONE 1630 McCarthy Blvd. Milpitas, CA 95035 www.linear.com Phone: (408)432-1900 Fax: (408)434-0507 1.5A SINGLE RESISTOR RUGGED LINEAR REGULATOR WITH MONITORS IC NO. REV. LT3081EFE 2 DEMO CIRCUIT 1870A Jun 06, 2013 DATE: 2 SHEET 1 1 OF 1 A