5 4 3 2 1 * SEE DEMO MANUAL U1 LT3042EDD EN/UV 1 3 INPUT RIPPLE MONITOR C 2 R6 OPT 0402 J1 5 C5 OPT 0603 2 3 ON 4 USER SELECT 6 OFF R1 200K JP1 0805 4 IN OUTS EN/UV PGFB PG GND E2 C1 4.7uF 50V 1206 OUT GND GND CIN 10µF 50V IN SET D VOUT 10 9 R3 453K 0805 6 7 C3 4.7uF 25V 1206 8 + 1 ILIM 50CE10BSS E1 5 VIN 3.8V-20V 11 D R2 33.2K 1206 C2 4.7uF 25V 1206 R4 49.9K 0805 C4 E5 OPT 1206 3.3V, 200mA * GND E6 OUTPUT NOISE MONITOR C6 J2 OPT 0603 C EN/UV E3 R5 510 0805 R7 OPT 0402 PG E4 B B 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. A TECHNOLOGY TITLE: SCHEMATIC SIZE THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 4 3 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only N/A DATE: 20V, 200mA, ULTRALOW NOISE, ULTRAHIGH PSRR RF LDO REGULATOR IC NO. REV. LT3042EDD 2 DC2246A Thursday, January 15, 2015 2 SHEET 1 1 OF 1 A