REVISION HISTORY ECO C2 10uF 25V 1206 (1210) C1 10uF 25V 1206 (1210) C4 1uF 25V 0805 2 1 VOUT+ CBST+ CBST- LDO + SW1 BYP+ VOUT+ VIN_N VIN_P 11 C12 10uF 50V 1210 VIN_P WURTH 450301014042 EN+ ON OFF 1 2 3 R1 1.0M 5% 13 E3 VIN_P C5 OPT 25V 0603 JP1 EN+ R5 4.7k 5% EN ON OFF 1 2 3 EN - R7 4 4.7k 5% MODE BURST CONST FREQ JP3 E5 17 15 C8 0.1uF 16V VIN_N ( 2 · VIN_P ) * E8 GND JP5 ** LDO+ CINV- CINV+ R2 1.0M EN+ ADJ+ C6 10uF 50V 1210 R3 604k R4 165k R14 MODE C15 10pF 50V E9 VIN_P E10 R8 1.0M 14 C9 OPT 25V 0603 4.7k 5% LDO - E6 GND FREQ 1 50kHz 2 3 4 200kHz 500kHz JP4 R15 909k R9 604k R10 165k C16 10pF 50V LDO 50mA E12 GND MODE BYP- 12 E11 6 R13 1.0M 5% 1 2 3 GND R12 52.3k ENADJ- LDO + 50mA 16 R11 52.3k C7 OPT 25V 0603 DATE VOUT+ C3 10uF 50V 1210 R6 1.0M 5% JP2 E4 9 C13 1uF 50V 1206 10 APPROVED M. MERCHANT 05 - 28 - 15 18 RT GND 19 VOUT- 5 C11 0.1uF 16V C10 10uF 50V 1210 -24V -15V -5V E2 PRODUCTION FAB E7 VIN_P 24V 15V 5V 3 VIN_P GND DESCRIPTION 3 U1 LTC3265 E1 4.5V - 16V REV JP6 ** LDO- 7 E13 8 VOUT( - VIN_N ) * C14 10uF 50V 1210 E14 GND R16 200k * SEE DEMO MANUAL FOR VOUT ± CURRENT CAPABILITY ** WARNING: IF LDO± OUTPUT JUMPER (JP5, JP6) IS REMOVED WHILE CONVERTER IS ENABLED, THE LDO OUPUT WILL INCREASE TO THE RESPECTIVE VOUT INPUT. CUSTOMER NOTICE NOTE: UNLESS OTHERWISE SPECIFIED 1. ALL RESISTORS ARE 0402, 1%, 1/16W ALL CAPACITORS ARE 0402, 10% 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. TECHNOLOGY NC MARTY M. 2. INSTALL SHUNTS AS SHOWN. TITLE: SCHEMATIC LOW NOISE DUAL SUPPLY WITH BOOST AND INVERTING CHARGE PUMPS SIZE THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 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. LTC3265EDHC DEMO CIRCUIT 2235A 05 - 28 - 15 3 SHEET 1 OF 1