LTM8028 36V , UltraFast, IN Low Output Noise 5A Module Regulator Fea T Descrip T n High Performance 5A Linear Regulator with The LTM 8028 is a 36V , 5A Module regulator, con- IN Switching Step-Down Converter for High Efficiency sisting of an UltraFast 5A linear regulator preceded by a n Digitally Programmable V : 0.8V to 1.8V high efficiency switching regulator. In addition to providing OUT n Input Voltage Range: 6V to 36V tight output regulation, the linear regulator automatically n Very Tight Tolerance Over Temperature, Line, Load controls the output voltage of the switcher to provide and Transient Response optimal efficiency and headroom for dynamic response. n Low Output Noise: 40V (10Hz to 100kHz) RMS The output voltage is digitally selectable in 50mV incre- n Parallel Multiple Devices for 10A or More ments over a 0.8V to 1.8V range. An analog margining n Accurate Programmable Current Limit to Allow function allows the user to adjust system output voltage Asymmetric Power Sharing over a continuous 10% range, and a single-ended feed- n Analog Output Margining: 10% Range back sense line may be used to mitigate IR drops due to n Synchronization Input parasitic resistance. n Stable with Low ESR Ceramic Output Capacitors n The LTM8028 is packaged in a compact (15mm 15mm 15mm 15mm 4.92mm Surface Mount 4.92mm) overmolded ball grid array (BGA) package suit- BGA Package n able for automated assembly by standard surface mount SnPb or RoHS Compliant Finish equipment. The LTM8028 is available with SnPb (BGA) or RoHS compliant terminal finish. a T L, LT, LTC, LTM, Module, Linear Technology and the Linear logo are registered trademarks and UltraFast is a trademark of Linear Technology Corporation. All other trademarks are the n FPGA and DSP Supplies property of their respective owners. n High Speed I/O Click to view associated TechClip Videos. n ASIC and Microprocessor Supplies n Servers and Storage Devices Typical a T Low Output Noise, 1.2V, 5A Module Regulator V OUT 20mV/DIV LTM8028 V OUT V V IN OUT V LINEAR IN 1.2V REGULATOR 9V TO 15V 150k 5A SENSEP RUN I OUT 10F MARGA 2A/DIV BKV IMAX I = 0.5A TO 5A 0.01F OUT 1s RISE/FALL TIME SS PGOOD 137F 10s/DIV 82.5k 100F RT V V V V SYNC GND OB O0 O1 O2 + FULL LOAD 470F NOISE AND RIPPLE f = 500kHz 8028 TA01a 500V/DIV 1s/DIV MEASURED PER AN70, 150MHz BW 8028 TA01b 8028fb 1 For more information www.linear.com/LTM8028 ion pplica ions pplica ion uresLTM8028 a Te Maxi Mu M r a T p in c F T (Notes 1, 4) TOP VIEW V ............................................................................40V IN 11 V ............................................................................3V OUT BANK 1 BANK 2 V OUT 10 RUN, SS, SYNC ..........................................................6V BKV 9 Current Into RUN ..................................................100A SENSEP 8 V , V , V , V , TEST, OB O0 O1 O2 TEST 7 PGOOD, SENSEP, MARGA ...........................................4V MARGA BANK 3 GND PGOOD 6 RT, BKV, I .............................................................3V MAX V O0 V O1 5 Maximum Operating Junction Temperature V O2 V OB 4 (Note 2) ................................................................. 125C 3 Peak Solder Reflow Body Temperature ................. 245C Maximum Storage Temperature ............................ 125C 2 SS SYNC BANK 4 V IN 1 I MAX RT RUN A B C D E F G H J K L BGA PACKAGE 114 PADS (15mm 15mm 4.92mm) T = 125C, = 17.7C/W, JMAX JA = 6.0C/W, = 15C/W, JB JCtop = 6.0C/W JCbottom VALUES DETERMINED PER JEDEC 51-9, 51-12 WEIGHT = 1.8 GRAMS o r Der i n F Ma T PART NUMBER PAD OR BALL FINISH PART MARKING* PACKAGE MSL TEMPERATURE RANGE TYPE RATING (Note 2) DEVICE FINISH CODE LTM8028EY PBF SAC305 (RoHS) LTM8028Y e1 BGA 3 40C to 125C LTM8028IY PBF SAC305 (RoHS) LTM8028Y e1 BGA 3 40C to 125C LTM8028IY SnPb (63/37) LTM8028Y e0 BGA 3 40C to 125C LTM8028MPY PBF SAC305 (RoHS) LTM8028Y e1 BGA 3 55C to 125C LTM8028MPY SnPb (63/37) LTM8028Y e0 BGA 3 55C 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 Pb-free and Non-Pb-free Part Markings: LGA and BGA Package and T ray Drawings: www.linear.com/leadfree www.linear.com/packaging e Trical c T TThe l denotes the specifications which apply over the full internal operating temperature range, otherwise specifications are at T = 25C. V = 12V, RUN = 3V unless otherwise noted. (Note 2) A IN PARAMETER CONDITIONS MIN TYP MAX UNITS Minimum Input Voltage 6 V l Output DC Voltage 0.788 0.8 0.812 V l 0.985 1.0 1.015 V l 1.182 1.2 1.218 V l 1.477 1.5 1.523 V l 1.773 1.8 1.827 V Output DC Current V = 1.8V 5 A OUT 8028fb 2 For more information www.linear.com/LTM8028 ics eris harac lec ion or ion igura on ings bsolu