5 4 3 2 1 REVISION HISTORY ECO VIN E2 REV DESCRIPTION DATE PRODUCTION 2 APPROVED 9/03/15 SY VIN1 [1] 3.6V - 15V + CIN6 22uF 25V 7343 CIN4 47uF OPT 16V 1206 CIN5 47uF 16V 1206 CIN3 2.2uF 25V 0805 CIN2 4.7uF 16V 0603 CIN1 4.7uF 16V 0603 E3 D INTVCC INTVCC D GND RPG1 100K RPG2 100K E1 E8 PGOOD1 PGOOD2 RUN1 JP1 B4 D3 E2 VIN A2 B3 VIN PGOOD2 D2 VIN 1M 3 OFF 1M E11 VDDQIN RDDQIN A4 VDDQIN B2 RUN2 VOUT1 VOUT1 INTVCC CVCC1 1uF FB1 RTR1 E14 JP6 B1 VTTR VDDQ SEL 2.5V R4 19.1k 1% CC2 OPT TRACKSS 8 A1 COMP2 0 1 TRACK 1.8V R5 30.1k 1% 1.5V R6 40.2k 1% USER SEL R7 OPT E7 GND 2 SS E5 3 VTT JP3 B CTR1 4700pF COUT2 100uF 6.3V 1206 CTTR 10nF COUT4 100uF 6.3V 1206 COUT6 100uF 6.3V 1206 COUT8 OPT 6.3V 1206 E10 C18 1uF 10V B E13 VDDQ 2 3 4 5 3 C4 1uF 10V SUD50N04-8M8P VTT +/- 3A COUT9 10uF 6.3V 0805 J2 1 VDDQ Q1 C A3 GND D5 GND B5 GND C4 GND C2 GND COMP2 A5 E9 VOUT2 C1 COMP1 CC1 OPT RTR2 OPT VDDQ 3A COUT7 10uF 6.3V 0805 TRACKSS1 VOUT2 E5 COMP1 TRACK1 COUT5 OPT 6.3V 1206 VFB1 6 JP4 (FORCED CONTINUOUS MODE) GND E4 COUT3 100uF 6.3V 1206 GND E3 E6 LTM4632EV MODE/SYNC COUT1 100uF 6.3V 1206 7 6 CFFW1 10pF RFB1 OPT 4 5 C5 VDDQ 5 4 E4 E1 2 FCM R8 1k 1% 2 3 D1 1 SYNC CLK 1 RVDDQ 0 INTVCC MODE BURST MODE E12 C C3 CVCC 1uF CDDQIN OPT 0805 OPT JP2 3 3 R1 2 R2 2 VIN ON D4 1 1 ON OFF VIN PGOOD1 RUN1 VIN RUN2 OPTIONAL JUMPERS FOR PARALLEL OPERATION VTTR CTTR1 OPT 0603 10mA 1 R3 10K FOR POLY-PHASE OPERATION: JP6 = OPEN VFB1 RD1, R29, R26, RDDQIN = 0 RVDDQ = OPT 2 IOSTEP CLK J1 IOSTEP R29 INTVCC VDDQ VTT OPT 2512 RD1 OPT COMP1 1 5 4 3 2 RS1 0.050 1% 1206 [1] CIN6, IS AN OPTIONAL CAPACITOR. IT IS INSERTED TO DAMPEN THE (POSSIBLE) RINGING VOLTAGE DUE TO LONG INPUT LEADS. ON A NORMAL, TYPICAL PCB, WITH SHORT TRACES, THE CAPACITOR IS NOT NEEDED. A CUSTOMER NOTICE COMP2 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. LT VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED APP ENG. SY CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. TECHNOLOGY 15V DUAL 3A DDR µMODULE REGULATOR SIZE 1. ALL RESISTORS AND CAPACITORS ARE 0603 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 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 TITLE: SCHEMATIC NOTE: UNLESS OTHERWISE SPECIFIED 5 R26 OPT N/A SCALE = NONE 2 DATE: IC NO. REV. LTM4632EV DEMO CIRCUIT 2367A SHEET 1 Thursday, September 03, 2015 1 2 OF 1 A