POWER LOSS (W) LTM4601/LTM4601-1 12A Module Regulators with PLL, Output Tracking and Margining Fea T Descrip T n Complete Switch Mode Power Supply The LTM 4601 is a complete 12A step-down switch mode n Wide Input Voltage Range: 4.5V to 20V DC/DC power supply with onboard switching controller, n 12A DC Typical, 14A Peak Output Current MOSFETs, inductor and all support components. The n 0.6V to 5V Output Voltage Module regulator is housed in small surface mount n Output Voltage Tracking and Margining 15mm 15mm 2.82mm LGA and 15mm 15mm n Parallel Multiple Module Regulators for Current 3.42mm BGA packages. Operating over an input voltage Sharing range of 4.5V to 20V, the LTM4601 supports an output n Differential Remote Sensing for Precision voltage range of 0.6V to 5V as well as output voltage Regulation (LTM4601 Only) tracking and margining. The high efficiency design deliv - n PLL Frequency Synchronization ers 12A continuous current (14A peak). Only bulk input n 1.5% Regulation and output capacitors are needed to complete the design. n Current Foldback Protection (Disabled at Start-Up) The low profile and light weight package easily mounts n SnPb or RoHS Compliant Finish in unused space on the back side of PC boards for high n UltraFast Transient Response density point of load regulation. The Module regulator n Current Mode Control can be synchronized with an external clock for reducing n Up to 95% Efficiency at 5V , 3.3V IN OUT undesirable frequency harmonics and allows PolyPhase n Programmable Soft-Start operation for high load currents. n Output Overvoltage Protection n A high switching frequency and adaptive on-time current Small Footprint, Low Profile mode architecture deliver a very fast transient response (15mm 15mm 2.82mm) Surface Mount LGA and to line and load changes without sacrificing stability. An (15mm 15mm 3.42mm) BGA Packages onboard differential remote sense amplifier can be used to accurately regulate an output voltage independent of a T load current. The onboard remote sense amplifier is not n Telecom and Networking Equipment available in the LTM4601-1. n Servers L, LT, LTC, LTM, Linear Technology, the Linear logo, Module and PolyPhase are registered n trademarks and UltraFast and LTpowerCAD are trademarks of Linear Technology Corporation. Industrial Equipment All other trademarks are the property of their respective owners. Protected by U.S. Patents n Point of Load Regulation including 5481178, 5847554, 6580258, 6304066, 6476589, 6774611, 6677210. Efficiency and Power Loss Typical a T vs Load Current 1.5V/12A Power Supply with 4.5V to 20V Input 95 4.0 EFFICIENCY 5V IN CLOCK SYNC V 90 IN 3.5 TRACK/SS CONTROL 4.5V TO 20V 85 V PLLIN TRACK/SS IN V 12V OUT IN 3.0 1.5V 80 PGOOD V OUT 100pF 12A 2.5 V 75 FB 12V IN RUN MARG0 ON/OFF MARGIN 70 2.0 COMP MARG1 CONTROL C 5V IN LTM4601 OUT C IN INTV V 65 CC OUT LCL 1.5 DRV DIFFV CC OUT 60 + MPGM V POWER LOSS OSNS 1.0 55 V OSNS R1 f SGND PGND SET 392k R 50 0.5 SET 40.2k 0 2 4 6 8 10 12 14 5% MARGIN LOAD CURRENT (A) 4601 TA01a 4601 TA01b 4601fe 1 For more information www.linear.com/LTM4601 EFFICIENCY (%) ion pplica ions pplica ion uresLTM4601/LTM4601-1 a Te Maxi Mu M r a T (Note 1) INTV , DRV , V , V (V 3.3V with V ............................................................. 0.3V to 20V CC CC OUT LCL OUT OUT IN + DIFFV ) .................................................... 0.3V to 6V V , V ..........................0.3V to INTV + 0.3V OUT OSNS OSNS CC PLLIN, TRACK/SS, MPGM, MARG0, MARG1, Operating Temperature Range (Note 2)....40C to 85C PGOOD, f ..............................0.3V to INTV + 0.3V Junction Temperature ........................................... 125C SET CC RUN (Note 5) ............................................... 0.3V to 5V Storage Temperature Range .................. 55C to 125C V , COMP ................................................ 0.3V to 2.7V Reofl w (Peak Body) Temperature .......................... 245C FB p in c F T TOP VIEW TOP VIEW V f V f SET IN IN SET MARG0 MARG0 MARG1 MARG1 DRV DRV CC CC V V FB FB PGND PGND PGOOD PGOOD SGND SGND + + V /NC2* OSNS V /NC2* OSNS DIFFV /NC3* OUT DIFFV /NC3* OUT V V OUT OUT V V OUT LCL OUT LCL V /NC1* OSNS V /NC1* OSNS BGA PACKAGE LGA PACKAGE 118-LEAD (15mm 15mm 3.42mm) 118-LEAD (15mm 15mm 2.82mm) T = 125C, = 15.5C/W, = 6.5C/W, T = 125C, = 15C/W, = 6C/W, JMAX JA JC JMAX JA JC DERIVED FROM 95mm 76mm PCB WITH 4 LAYERS DERIVED FROM 95mm 76mm PCB WITH 4 LAYERS JA JA WEIGHT = 1.7g WEIGHT = 1.9g *LTM4601-1 ONLY *LTM4601-1 ONLY 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 LTM4601EV PBF Au (RoHS) LTM4601V e4 LGA 3 40C to 85C LTM4601IV PBF Au (RoHS) LTM4601V e4 LGA 3 40C to 85C LTM4601EV-1 PBF Au (RoHS) LTM4601V-1 e4 LGA 3 40C to 85C LTM4601IV-1 PBF Au (RoHS) LTM4601V-1 e4 LGA 3 40C to 85C LTM4601EY PBF SAC305 (RoHS) LTM4601Y e1 BGA 3 40C to 85C LTM4601IY PBF SAC305 (RoHS) LTM4601Y e1 BGA 3 40C to 85C LTM4601EY-1 PBF SAC305 (RoHS) LTM4601Y-1 e1 BGA 3 40C to 85C LTM4601IY-1 PBF SAC305 (RoHS) LTM4601Y-1 e1 BGA 3 40C to 85C LTM4601IY SnPb (63/37) LTM4601Y e0 BGA 3 40C to 85C LTM4601IY-1 SnPb (63/37) LTM4601Y-1 e0 BGA 3 40C to 85C 4601fe 2 For more information www.linear.com/LTM4601 INTV CC PLLIN TRACK/SS RUN COMP MPGM INTV CC PLLIN TRACK/SS RUN COMP MPGM ion or ion igura on ings bsolu