4 3 2 1 REVISION HISTORY E1 HVIN 8V - 38V 4 C6 4.7uF 50V 1206 E2 R3 150k 4 VIN BD 1 BOOST 2 5% 5 SW 3 L3 4.7uH 1 C7 0.068uF 50V 0603 RUN/SS 6 10 R4 40.2k 8 SYNC PG 7 Vc 9 GND 11 D5 DFLS240L 40V 2A 3 DESCRIPTION PRODUCTION FAB APPROVED DATE GEORGE B. 9 - 17 - 13 R7 536k R8 150k 20% R6 100k R5 20k 3 C10 22uF 6.3V 0805 M3 Si2333DS 1 5% R10 100k C8 330pF 3 REV - 5V OUT RT FB ECO 4 C9 0.47uF 25V 0603 2 GND U1 LT3480EDD 2 3 3 M4 2N7002L 5% 1 2 E3 VCC 4.75V - 5.25V L1 68uH D6 ON L2 68uH E6 E4 GND R9 1K 5% Cx1 0.15uF 2% FC6041 Cx2 0.15uF 2% FC6041 2 D2 NSR10F40NXT5G 5678 M1 Si4108DY-T1-GE3 4 321 D1 BZX84C16 16V C5 0.01uF R1 R2 100 100 5% 5% 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. 1 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 4 3 2 Cy 2 M2 Si4108DY-T1-GE3 123 D4 BZX84C16 16V UNLESS NOTED: RESISTORS: OHMS, 0402, 1%, 1/16W CAPACITORS: uF, 0402, 10%, 50V APPROVALS APP ENG. Cx Lx 5.0uH 5% 8765 4 PCB DES. Cx4 0.15uF 2.5% MKS02 OPT E5 D3 NSR10F40NXT5G C4 0.01uF Cx3 0.15uF 2.5% MKS02 OPT TECHNOLOGY NC 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only GEORGE B. TITLE: SCHEMATIC BASIC INDUCTIVE TRANSMITTER WITH PRE - REGULATOR SIZE IC NO. N/A SCALE = NONE DATE: REV. LTC4120EUD / LTC4120-4.2EUD DEMO CIRCUIT 1968A 3 SHEET 1 9 - 17 - 13 1 OF 1 1