1 2 REVISION HISTORY ECO REV __ U1 VIN E1 1.7V - 23V 5 + CIN * 10uF 50V C1 4.7uF 50V 1206 A VCONTROL 2.8V - 25V E2 IN OUT NC VCONTROL E4 3 C3 22uF 16V 10% 1206 6 1 EDWIN L. 11-10-10 R7 499 0805 VOUT ADJ., 3A MAX A E5 GND 2 2 1.2V 3 4 1.5V 5 6 1.8V 7 8 2.5V 9 10 3.3V 12 5.0V 1 C4 0.01uF GND PRODUCTION DATE SET C2 4.7uF 50V 1206 E3 2 APPROVED LT3083EQ OUT 4 DESCRIPTION 11 R1 R8 24.3K 1% R2 30.1K 1% R3 35.7K 1% R4 49.9K 1% R5 14 USER 100K 1% SELECT 13 JP1 66.5K1% R6 (OPT) NOTE: UNLESS OTHERWISE SPECIFIED 1. ALL RESISTORS AND CAPACITORS ARE IN 0603. 2. INSTALL SHUNTS AS SHOWN. B * CIN IS OPTIONAL, FOR VIN PAMPING PURPOSE ONLY. CUSTOMER NOTICE B 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. TECHNOLOGY HZ EDWIN L. TITLE: SCHEMATIC ADJUSTABLE 3A SINGLE RESISTOR LDO REGULATOR SIZE THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 1 N/A SCALE = NONE 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only DATE: IC NO. REV. LT3083EQ 2 DEMO CIRCUIT 1585A Thursday, November 18, 2010 2 SHEET 1 OF 1