LTM4630 Dual 18A or Single 36A DC/DC Module Regulator FEATURES DESCRIPTION n Dual 18A or Single 36A Output The LTM 4630 is a dual 18A or single 36A output switching n Wide Input Voltage Range: 4.5V to 15V mode step-down DC/DC Module (micromodule) regula- n Output Voltage Range: 0.6V to 1.8V tor. Included in the package are the switching controllers, n 1.5% Maximum Total DC Output Error Over Line, power FETs, inductors, and all supporting components. Load and Temperature Operating from an input voltage range of 4.5V to 15V, the n Differential Remote Sense Amplifier LTM4630 supports two outputs each with an output voltage n Current Mode Control/Fast Transient Response range of 0.6V to 1.8V, each set by a single external resistor. n Adjustable Switching Frequency Its high efficiency design delivers up to 18A continuous n Overcurrent Foldback Protection current for each output. Only a few input and output ca- n Multiphase Parallel Current Sharing with Multiple pacitors are needed. The LTM4630 is pin compatible with LTM4630s Up to 144A the LTM4620 and LTM4620A (dual 13A, single 26A) and n Frequency Synchronization the LTM4628 (dual 8A, single 16A). n Internal Temperature Monitor The device supports frequency synchronization, multi- n Pin Compatible with the LTM4620 and LTM4620A (Dual phase operation, Burst Mode operation and output voltage 13A, Single 26A) and LTM4628 (Dual 8A, Single 16A) tracking for supply rail sequencing and has an onboard n Selectable Burst Mode Operation temperature diode for device temperature monitoring. High n Soft-Start/Voltage Tracking switching frequency and a current mode architecture enable n Output Overvoltage Protection a very fast transient response to line and load changes n 16mm 16mm 4.41mm LGA and 16mm 16mm without sacrificing stability. 5.01mm BGA Packages Fault protection features include overvoltage and overcurrent protection. The LTM4630 is offered in 16mm APPLICATIONS 16mm 4.41mm LGA and 16mm 16mm 5.01mm n Telecom and Networking Equipment BGA packages. The LTM4630 is ROHS compliant. n Storage and ATCA Cards L, LT, LTC, LTM, Linear Technology, the Linear logo, Module, Burst Mode and PolyPhase are n Industrial Equipment registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 5481178, 5705919, 5929620, 6100678, 6144194, 6177787, 6304066 and 6580258. Other patents pending. TYPICAL APPLICATION 36A, 1.2V Output DC/DC Module Regulator INTV CC 1.2V Efficiency vs I OUT OUT 4.7F 10k PGOOD 95 MODE PLLIN CLKOUT INTV EXTV PGOOD1 V = 5V CC CC IN V IN 90 V V IN OUT1 4.5V TO 15V 22F + 100F 470F TEMP V 10k 120k OUTS1 25V 6.3V 6.3V V = 12V 4 85 IN RUN1 DIFFOUT RUN2 SW1 80 TRACK1 V FB1 LTM4630 5.1V TRACK2 V FB2 60.4k 75 0.1F f COMP1 SET PHASMD COMP2 70 V OUTS2 V OUT V 1.2V 121k OUT2 65 + 36A 100F 0 2 4 6 8 10 12 14 16 18 SW2 470F 6.3V 6.3V OUTPUT CURRENT (A) PGOOD2 SGND GND DIFFP DIFFN 4630 TA01b PGOOD 4630 TA01a 4630fa 1 For more information www.linear.com/LTM4630 EFFICIENCY (%)LTM4630 ABSOLUTE MAXIMUM RATINGS (Note 1) V (Note 8) ............................................... 0.3V to 16V DIFFP, DIFFN .......................................... 0.3V to INTV IN CC V , V ................................................... 1V to 16V COMP1, COMP2, V , V (Note 6) ........ 0.3V to 2.7V SW1 SW2 FB1 FB2 PGOOD1, PGOOD2, RUN1, RUN2, INTV Peak Output Current ................................100mA CC INTV , EXTV ........................................... 0.3V to 6V Internal Operating Temperature Range CC CC MODE PLLIN, f , TRACK1, TRACK2, (Note 2) ............................................. 40C to 125C SET DIFFOUT, PHASMD ................................ 0.3V to INTV Storage Temperature Range ................... 55C to 125C CC V , V , V , V (Note 6) ........ 0.3V to 6V Peak Package Body Temperature .......................... 245C OUT1 OUT2 OUTS1 OUTS2 PIN CONFIGURATION TOP VIEW TOP VIEW TEMP EXTV CC TEMP EXTV CC M M L L V IN K K J J H INTV CC CLKOUT INTV H CC SW2 CLKOUT SW1 SW2 SW1 G PGOOD1 G PGOOD1 PGOOD2 PHASMD RUN1 SGND PGOOD2 PHASMD RUN1 SGND RUN2 F RUN2 MODE PLLIN F DIFFOUT MODE PLLIN GND COMP1 COMP2 DIFFOUT GND COMP1 COMP2 DIFFP E DIFFP DIFFN E TRACK1 V TRACK2 GND DIFFN SGND FB2 TRACK1 V V SGND FB2 TRACK2 GND FB1 D V FB1 D f V SGND OUTS2 SET V f SET SGND OUTS2 C C V OUTS1 V OUTS1 B B V V OUT1 GND OUT2 V GND OUT2 A A 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 LGA PACKAGE BGA PACKAGE 144-LEAD (16mm 16mm 4.41mm) 144-LEAD (16mm 16mm 4.41mm) T = 125C, = 7C/W, = 1.5C/W, = 3.7C/W, + 7C/W JMAX JA JCbottom JCtop JB JBA T = 125C, = 7C/W, = 1.5C/W, = 3.7C/W, + 7C/W JMAX JA JCbottom JCtop JB JBA VALUES DEFINED PER JESD 51-12 VALUES DEFINED PER JESD 51-12 WEIGHT = 3.2g WEIGHT = 3.2g ORDER INFORMATION PART MARKING* PACKAGE MSL TEMPERATURE RANGE PART NUMBER PAD OR BALL FINISH DEVICE FINISH CODE TYPE RATING (Note 2) LTM4630EV PBF Au (RoHS) LTM4630V e4 LGA 3 40C to 125C LTM4630IV PBF Au (RoHS) LTM4630V e4 LGA 3 40C to 125C LTM4630EY PBF SAC305 (RoHS) LTM4630Y e1 BGA 3 40C to 125C LTM4630IY PBF SAC305 (RoHS) LTM4630Y e1 BGA 3 40C to 125C LTM4630IY SnPb (63/37) LTM4630Y e0 BGA 3 40C to 125C Consult Marketing for parts specified with wider operating temperature Recommended LGA and BGA PCB Assembly and Manufacturing ranges. *Device temperature grade is indicated by a label on the shipping Procedures: container. Pad or ball finish code is per IPC/JEDEC J-STD-609. www.linear.com/umodule/pcbassembly LGA and BGA Package and T ray Drawings: Terminal Finish Part Marking: www.linear.com/packaging www.linear.com/leadfree 4630fa 2 For more information www.linear.com/LTM4630