POWER LOSS (W) LTM4619 Dual, 26V , 4A DC/DC IN Module Regulator Fea T Descrip T n Complete Standalone Power Supply The LTM 4619 is a complete dual 4A or single 8A step- n Wide Input Voltage Range: 4.5V to 26.5V down DC/DC Module (micromodule) regulator. Included (EXTV Available for V 5.5V) in the package are the switching controller, power FETs, CC IN n Dual 180 Out-of-Phase Outputs with 4A DC inductor, and all support components. Operating over Typical, 5A Peak Output Current for Each input voltage ranges of 4.5V to 26.5V, the LTM4619 sup- n Dual Outputs with 0.8V to 5V Range ports two outputs with voltage ranges of 0.8V to 5V, each n Output Voltage Tracking set by a single external resistor. Its high efficiency design n 1.5% Maximum Total DC Output Error delivers 4A continuous current (5A peak) for each output. n Current Mode Control/Fast Transient Response High switching frequency and a current mode architecture n Power Good enable a very fast transient response to line and load n Phase-Lockable Fixed Frequency 250kHz to 780kHz changes without sacrificing stability. The two outputs n On Board Frequency Synchronization are interleaved with 180 phase to minimize the ripple n Parallel Current Sharing noise and reduce the I/O capacitors. The device supports n Selectable Burst Mode Operation frequency synchronization and output voltage tracking for n Output Overvoltage Protection supply rail sequencing. Burst Mode operation or pulse- n 15mm 15mm 2.82mm LGA Package skipping mode can be selected for light load operations. Fault protection features include overvoltage protection, a T overcurrent protection and foldback current limit for short-circuit protection. n Telecom and Networking Equipment n Servers The low profile package (2.82mm) enables utilization of n Storage Cards unused space on the bottom of PC boards for high density n ATCA Cards point of load regulation. The power module is offered in n Industrial Equipment a 15mm 15mm 2.82mm LGA package. The LTM4619 n Point of Load Regulation is RoHS compliant with Pb-free finish. L, LT, LTC, LTM, Linear Technology, the Linear logo, Burst Mode and Module are registered trademarks and LTpowerCAD is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. Typical a T Dual 4A 3.3V/2.5V DC/DC Module Regulator Efficiency and Power Loss at 12V input 95 2.0 EFFICIENCY 90 MODE/PLLIN INTV CC 5.5V TO 26.5V V FREQ/PLLFLTR IN 85 1.5 10F 28k 19.1k 2 V V FB1 FB2 80 22pF COMP1 COMP2 22pF V V 75 1.0 OUT2 OUT1 LTM4619 V V OUT1 OUT2 2.5V/4A 3.3V/4A 100F 100F 70 TK/SS1 TK/SS2 POWER LOSS 0.1F 0.1F RUN1 RUN2 65 0.5 PGOOD EXTV CC 60 2.5V OUT SGND PGND 3.3V OUT 55 0 4619 TA01a 0 0.5 1 1.5 2 2.5 3 3.5 4 LOAD CURRENT (A) 4619 TA01b 4619fc 1 For more information www.linear.com/LTM4619 EFFICIENCY (%) ion pplica ions pplica ion uresLTM4619 a Te Maxi Mu M r a T p in c F T (Note 1) TOP VIEW V ............................................................. 0.3V to 28V IN TK/SS2 V COMP2 COMP1 V TK/SS1 FB2 FB1 INTV , PGOOD, RUN1, RUN2, EXTV ....... 0.3V to 6V CC CC M V V , V ................................................. 0.3V to 2.7V IN FB1 FB2 L COMP1, COMP2 (Note 4) .......................... 0.3V to 2.7V K MODE/PLLIN, TK/SS1, TK/SS2, RUN2 FREQ/PLLFLTR J EXTV RUN1 CC SGND FREQ/PLLFLTR .....................................0.3V to INTV CC H SW2 SW1 V , V .................................................. 0.8V to 5V OUT1 OUT2 G PGOOD MODE/PLLIN Internal Operating Temperature Range F INTV CC (Note 2) .................................................. 40C to 125C E Maximum Reflow Body Temperature .................... 245C D GND Storage Temperature Range .................. 55C to 125C C V V OUT2 OUT1 B A 1 2 3 4 5 6 7 8 9 10 11 12 LGA PACKAGE 144-LEAD (15mm 15mm 2.82mm) T = 125C, = 13.4C/W, = 6C/W, = 16C/W, , JMAX JA JCbottom JCtop JB JCbottom + = 13.4 C/W, DERIVED FROM 95mm 76mm PCB WITH 4 LAYERS WEIGHT = 1.7g JB BA JA o r Der i n F Ma T PART NUMBER PAD OR BALL FINISH PART MARKING* PACKAGE MSL TEMPERATURE RANGE TYPE RATING (SEE NOTE 2) DEVICE FINISH CODE LTM4619EV PBF Au (RoHS) LTM4619V e4 LGA 3 40C to 125C LTM4619IV PBF Au (RoHS) LTM4619V e4 LGA 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 Tray Drawings: Terminal Finish Part Markings: