LTM4632EV

LTM4632EV LINER | Alldatasheet

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Ultrathin µModule Regulator for DDR-QDR4 Memory VDDQ, VTT and VREF Demonstration circuit DC2367A features the LT M®4632EV µModule® regulator , a tiny low-profile high-performance high efficiency dual step-down regulator for DDR power . LTM4632 has an operating input voltage range of 3.6V to 15V. The output voltage of channel 1 (VDDQ) is resis- tor programmable from 0.6V to 2.5V and is capable of delivering up to 3A of output current. The output voltage of channel 2 (VTT) is set to regulate ½ of the voltage on the VDDQIN pin which can provided by either the channel 1 output or an external reference voltage. It can source or sink up to 3A of output current. A 10mA buffered output of VDDQIN/2 is also provided for supplying VREF voltage for DDR memory. DC2367A also provides the option for paralleling channels 1 and 2 together for up to 6A capable VTT rail. LTM4632 is a complete DC/DC DDR dual point L, L T , L TC, L TM, Linear Technology, the Linear logo, µModule and Burst Mode are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. of load regulator in a low-profile thermally enhanced 6.25mm × 6.25mm × 1.82mm LGA package requiring only a few input and output capacitors. Output voltage tracking is available through the TRACK/SS pin for supply rail sequencing. External clock synchronization is avail - able through the SYNC/MODE pin. For high efficiency at low load currents the MODE pin jumper (JP4 ) selects the Burst Mode® option for operation in less noise sensitive applications. The LTM4632 data sheet must be read in conjunction with this demo manual for working on or modifying demo circuit 2367A. Design files for this circuit board are available at http://www.linear .com/demo/DC2367A BOARD PHOTO

Demonstration circuit DC2367A is an easy way to evaluate the performance of the LTM4632. Please refer to Figure 1 for test setup connections and follow the procedure below. With power off, place the jumpers in the following positions for a typical application for 2.5V OUT1 and 1.25VOUT2 rails: JP1 JP2 JP3 JP4 JP6 RUN1 RUN2 TRACK/SS MODE VDDQ SEL ON ON SS CCM 2.5V 2. Before powering up the input supply and loads, preset the input voltage supply to be between 3.6V to 15V. Preset the load current for each output rail to 0A. 3. With power off, connect the loads, input voltage supply and meters as shown in Figure 1. 4. Turn on the input power supply. The output voltage me- ters for each output rail should display the programmed output voltage ±1.5%. 5. Once the proper output voltages are established, ad - just the load current on each rail within the 0A to 3A range and observe each output rail’s load regulation, efficiency, and other parameters. 6. To observe increased light load efficiency place the mode pin jumper (JP4) in the BURST MODE position. PERFORMANCE SUMMARY Specifications are at TA = 25°C PARAMETER CONDITIONS MIN TYP MAX UNITS Input Voltage Range 3.6 15 V Output Voltage VOUT1 (VDDQ) Resistor Programmable, Jumper Selectable 1.5 (±1.5%) 1.8 (±1.5%) 2.5 (±1.5%) V V V Maximum Continuous Output Current I OUT1 Derating Is Necessary for Certain Operating Conditions. See Data Sheet for Details 3 A Output Voltage V OUT2 (VTT) VOUT1 = 1.5V VOUT1 = 1.8V VOUT1 = 2.5V 0.75 0.9 1.25 V V V Maximum Continuous Output Current I OUT2 Derating Is Necessary for Certain Operating Conditions. See Data Sheet for Details ±3 A Default Operating Frequency 1 MHz Efficiency V IN = 12V, VOUT1 = 2.5V, IOUT = 3A, fSW = 1MHz V IN = 12V, VOUT2 = 1.25V, IOUT = 3A, fSW = 1MHz 83.9 (See Figure 2) 72.3 (See Figure 3)

Figure 6. 12VIN Full Load Thermal Capture

ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Required Circuit Components 1 2 CIN1, CIN2 CAP ., 4.7µF, X5R, 16V, 10%, 0603 TDK - C1608X5R1C475K080AC 2 2 COUT7, COUT9 CAP ., 10µF, X5R, 6.3V, 10%, 0805 MURATA, GRM219R60J106KE19D 3 5 COUT1, COUT2, COUT3, COUT4, COUT6 CAP ., 100µF, X5R, 6.3V, 20%, 1206 MURATA, GRM31CR60J107ME39L 4 1 R4 RES., 19.1k, 1/10W, 1%, 0603 VISHAY, CRCW060319K1FKEA Additional Demo Board Circuit Components 1 0 CIN4, COUT5, COUT8 CAP ., OPTION, 1206 OPT 2 1 CIN5 CAP ., 47µF, X5R, 16V, 20%, 1206 TDK, C3216X5R1C476M160AB 3 1 CIN3 CAP ., 2.2µF, X7R, 25V, 10%, 0805 TAIYO YUDEN, TMK212B7225KGHT 4 1 CIN6 CAP ., POSCAP , 22µF, X5R, 25V, 20%, 7343 PANASONIC, 25TQC22MV 5 4 CVCC1, C4, C18, CVCC CAP ., 1µF, X5R, 10V, 10%, 0603 MURATA, GRM188R61A105KA61D 6 0 CDDQIN CAP ., OPTION, 0805 OPT 7 1 CTR1 CAP ., 4700pF, X7R, 50V, 10%, 0603 KEMET , C0603C472K5RACTU 8 1 CTTR CAP ., 0.01µF, X7R, 50V, 10%, 0603 KEMET , C0603C103K5RACTU 9 1 CFFW1 CAP ., 10pF, C0G, 50V, 5%, 0603 MURATA, GRM1885C1H100JA01D 10 0 CC1, CC2, CTTR1 CAP ., OPTION, 0603 OPT 11 0 RFB1, RT R2, R7, R26, RD1, RDDQIN RES, OPTION, 0603 OPT 12 1 R5 RES., 30.1k, 1/10W, 1%, 0603 VISHAY, CRCW060330K1FKEA 13 1 R6 RES., 40.2k, 1/10W, 1%, 0603 VISHAY, CRCW060340K2FKEA 14 1 R3 RES., 10k, 1/10W, 1%, 0603 VISHAY, CRCW060310K0FKEA 15 2 RPG1, RPG2 RES., 100k, 1/10W, 1%, 0603 VISHAY, CRCW0603100KFKEA 16 1 R8 RES., 1k, 1/10W, 1%, 0603 VISHAY, CRCW06031K00FKEA 17 2 R1, R2 RES., 1M, 1/10W, 1%, 0603 VISHAY, CRCW06031M00FKEA 18 2 RTR1, RVDDQ RES., 0Ω, 1/10W, 0603 VISHAY, CRCW06030000Z0EA 19 1 RS1 RES., 0.05Ω, 1/4W, 1%, 1206 VISHAY, WSL1206R0500FEA 20 0 R29 RES, OPTION, 2512 OPT 21 1 Q1 XSTR., MOSFET , N-CH, 40V, 14A, TO-252 VISHAY, SUD50N04-8M8P-4GE3 Hardware: For Demo Board Only 1 14 E1-E14 TESTPOINT , TURRET , 0.094" MTG. HOLE MILL-MAX, 2501-2-00-80-00-00-07-0 2 3 JP1, JP2, JP3 CONN., HEADER, 1X3, 2mm SULLINS, NRPN031PAEN-RC 3 1 JP4 CONN., HEADER, 2X3, 2mm SULLINS, NRPN032PAEN-RC 4 1 JP6 CONN., HEADER, 2X4, 2mm SULLINS, NRPN042PAEN-RC 5 5 XJP1, XJP2, XJP3, XJP4, XJP6 SHUNT , 2mm SAMTEC 2SN-BK-G 6 2 J1, J2 CONN, BNC, 5PINS CONNEX, 112404 7 4 STAND OFF STAND OFF , NYLON, SNAP-ON, 0.375" KEYSTONE_8832

Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However , no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. SCHEMATIC DIAGRAM D D C C B B A A [1]3.6V - 15V 10mA +/- 3A (FORCED CONTINUOUS MODE) 2.5V 1.8V 1.5V USER SEL VDDQ SEL 0603 15V DUAL 3A DDR µMODULE REGULATOR IOSTEP VDDQ [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. NOTE: UNLESS OTHERWISE SPECIFIED 1. ALL RESISTORS AND CAPACITORS ARE 0603 OPTIONAL JUMPERS FOR PARALLEL OPERATION FOR POLY-PHASE OPERATION: JP6 = OPEN RD1, R29, R26, RDDQIN = 0 RVDDQ = OPT VTT VDDQ VFB1 VDDQ VTT COMP1 COMP2 VDDQ COMP1 COMP2 VFB1 INTVCC VIN VIN INTVCC INTVCC INTVCC VIN SIZE DATE: IC NO. REV. SHEET OF TITLE: APPROVALS PCB DES. APP ENG. TECHNOLOGY Fax: (408)434-0507 Milpitas, CA 95035 Phone: (408)432-1900 1630 McCarthy Blvd. LTC Confidential-For Customer Use Only 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. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SCHEMATIC SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE www.linear.com Thursday, September 03, 2015 11 LT SY N/A LTM4632EV DEMO CIRCUIT 2367A SIZE DATE: IC NO. REV. SHEET OF TITLE: APPROVALS PCB DES. APP ENG. TECHNOLOGY Fax: (408)434-0507 Milpitas, CA 95035 Phone: (408)432-1900 1630 McCarthy Blvd. LTC Confidential-For Customer Use Only 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. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SCHEMATIC SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE www.linear.com Thursday, September 03, 2015 11 LT SY N/A LTM4632EV DEMO CIRCUIT 2367A SIZE DATE: IC NO. REV. SHEET OF TITLE: APPROVALS PCB DES. APP ENG. TECHNOLOGY Fax: (408)434-0507 Milpitas, CA 95035 Phone: (408)432-1900 1630 McCarthy Blvd. LTC Confidential-For Customer Use Only 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. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SCHEMATIC SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE www.linear.com Thursday, September 03, 2015 11 LT SY N/A LTM4632EV DEMO CIRCUIT 2367A

REVISION HISTORY

DESCRIPTION DATE APPROVEDECO REV SYPRODUCTION2 9/03/15 DESCRIPTION DATE APPROVEDECO REV SYPRODUCTION2 9/03/15 DESCRIPTION DATE APPROVEDECO REV SYPRODUCTION2 9/03/15 CFFW1 10pF 10uF COUT7 6.3V 0805 RFB1 OPT CIN5 47uF 16V 1206 E11 VDDQIN CIN2 4.7uF 16V 0603 LTM4632EV COMP2A5 GND D5 FB1 E4 VOUT2 B1 VOUT2 A1 COMP1E5 PGOOD1D4 VOUT1 D1 PGOOD2B4 VINE2 VINB3 RUN1D2 VDDQIN A4 VOUT1 E1 GND C1 GND C2 GND C4 GND B5 VIND3 RUN2B2 VINA2 MODE/SYNCC5 INTVCCC3 VTTRA3 TRACKSS1E3 PGOOD2 RPG2 100K VIN1 R26 OPT OPT COUT8 6.3V 1206 CVCC 1uF CC1 OPT RPG1 100K + CIN6 22uF 25V 7343 JP1 ON OFF RUN1 PGOOD1 CVCC1 1uF E12 CLK GND JP3 TRACKSS SS TRACK VDDQ OPT CDDQIN 0805 TRACK1 100uF COUT3 6.3V 1206 CTR1 4700pF CTTR1 OPT SUD50N04-8M8P 10K C18 1uF 10V GND JP2 ON OFF RUN2 OPT COUT5 6.3V 1206 RS1 0.050 1206 CIN3 2.2uF 25V 0805 100uF COUT2 6.3V 1206 E10 IOSTEP CLK CTTR 10nF R29 OPT 2512 100uF COUT6 6.3V 1206 CC2 OPT JP4 MODE FCM BURST MODE SYNC 1 2 3 4 5 6 RTR1 RTR2 OPT RVDDQ E13 VTTR 100uF COUT1 6.3V 1206 E14 GND 1uF 10V 30.1k CIN1 4.7uF 16V 0603 OPT 19.1k RDDQIN OPT RD1 OPT GND 40.2k 100uF COUT4 6.3V 1206 VTT JP6 CIN4 47uF OPT 16V 1206 10uF COUT9 6.3V 0805

DEMO MANUAL DC2367A Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear .com © LINEAR TECHNOLOGY CORPORATION 2016 LT 0116 • PRINTED IN USA DEMONSTRATION BOARD IMPORTANT NOTICE Linear Technology Corporation (LTC) provides the enclosed product(s) under the following AS IS conditions: This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not provided by LTC for commercial use. As such, the DEMO BOARD herein may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety measures typically found in finished commercial goods. As a prototype, this product does not fall within the scope of the European Union directive on electromagnetic compatibility and therefore may or may not meet the technical requirements of the directive, or other regulations. If this evaluation kit does not meet the specifications recited in the DEMO BOARD manual the kit may be returned within 30 days from the date of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY THE SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE. EXCEPT TO THE EXTENT OF THIS INDEMNITY, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES. The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user releases LTC from all claims arising from the handling or use of the goods. Due to the open construction of the product, it is the user’s responsibility to take any and all appropriate precautions with regard to electrostatic discharge. Also be aware that the products herein may not be regulatory compliant or agency certified (FCC, UL, CE, etc.). No License is granted under any patent right or other intellectual property whatsoever. LTC assumes no liability for applications assistance, customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind. LTC currently services a variety of customers for products around the world, and therefore this transaction is not exclusive. Please read the DEMO BOARD manual prior to handling the product. Persons handling this product must have electronics training and observe good laboratory practice standards. Common sense is encouraged. This notice contains important safety information about temperatures and voltages. For further safety concerns, please contact a LTC application engineer. Mailing Address: Linear Technology 1630 McCarthy Blvd. Milpitas, CA 95035 Copyright © 2004, Linear Technology Corporation