5 4 3 2 1 REVISION HISTORY ECO REV DESCRIPTION APPROVED DATE - 2 PRODUCTION FAB GEORGE B. 10 - 5 - 15 BH1 D E2 GND 2 C1 4.7µF 10V D1 U1 LTC4123EDC 2 ACIN E3 VCC 1 244kHz C CRx 33nF 25V 1206/0805 LRx 13µH +/-10% ACIN 4 CHRG PROG GND 6 R1 953 2 2.2 - 5.5V 1 E1 1 VCC D BAT E7 3 CHRG E6 5 BAT 0.8 - 1.7V 25mA C2 GND 7 C 1uF 16V OPT E5 GND R2 4.7k E4 PROG B B UNLESS NOTED: RESISTORS: OHMS, 0402, 1%, 1/16W CAPACITORS: uF, 0402, 10%, 50V CUSTOMER NOTICE 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 APPLICATION. COMPONENT SUBSTITUTION AND PRINTED APP ENG. CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. A TECHNOLOGY NC GEORGE B. TITLE: SCHEMATIC 5 4 N/A SCALE = NONE 3 A LOW POWER WIRELESS CHARGER SIZE THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 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. LTC4123EDC DEMO CIRCUIT 2300A 10 - 5 - 15 2 2 SHEET 1 1 OF 1