5 4 3 2 1 REVISION HISTORY ECO REV __ D DESCRIPTION 2 APPROVED DATE Molly Z. 04-04-13 2ND PROTOTYPE D U1 LT3055EDE 11 C1 0.01uF 0603 PWRGD E8 FAULT1 R9 121k 1% (10mA) 0603 E9 E5 C SHDN R11 499K 1% 0603 1 ON 2 OFF 3 6 R14 499K 1% 0603 3 1 2 + GND C5 10uF 50V E1 CIN 22uF 50V IMON 7 E6 R8 1.00K 1% 0603 C2 0.1uF 10 C4 22nF FAULT1 GND GND FAULT2 12 13 PWRGD ADJ JP8 VIN 2.2V - 45V IMAX 4 8 IMIN C3 0.1uF 5 R13 499K 1% 0603 IMON TEMP 9 FAULT2 REF/BYP TEMP E7 C C8 0.01uF 0603 16 SHDN IN IN 14 C9 0.1nF R10 604 1% (497mA) 0603 R12 60.4K 1% JP1 1.2V JP2 1.5V JP3 1.8V JP4 2.5V JP5 R1 60.4K 1% R2 90.9K 1% R3 121K 1% R4 191K 1% R5 274K 1% OUT 15 OUT GND 17 3.3V JP6 5V JP7 R6 442K 1% R7 OPT 0603 USER SELECT VOUT E3 1210 C6 10uF 50V C7 OPT "D" Case 1210 E2 500mA + E4 GND B B CUSTOMER NOTICE A 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. NOTE: UNLESS OTHERWISE SPECIFIED 1. ALL RESISTORS ARE 0402. ALL CAPACITORS ARE 0402. TECHNOLOGY JW Molly Z. TITLE: SCHEMATIC 500mA LOW DROPOUT LINEAR REGULATOR SIZE N/A THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 4 3 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: 2 IC NO. REV. LT3055EDE 2 DEMO CIRCUIT1865A Friday, May 03, 2013 SHEET 1 1 OF 1 A