POWER LOSS (W) LTM4601A/LTM4601A-1 12A Module Regulators with PLL, Output Tracking and Margining FEATURES DESCRIPTION n Complete Switch Mode Power Supply The LTM 4601A 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 a small surface mount n Output Voltage Tracking and Margining 15mm 15mm 2.82mm LGA or 15mm 15mm n Redundant Mounting Pads for Enhanced Solder- 3.42mm BGA package. The LTM4601A LGA and BGA Joint Strength packages are designed with redundant mounting pads to n Parallel Multiple Modules for Current Sharing enhance solder-joint strength for extended temperature n Differential Remote Sensing for Precision cycling endurance. Operating over an input voltage range Regulation (LTM4601A Only) of 4.5V to 20V, the LTM4601A supports an output voltage n PLL Frequency Synchronization range of 0.6V to 5V as well as output voltage tracking n 1.5% Total DC Error and margining. The high efficiency design delivers 12A n Current Foldback Protection (Disabled at Start-Up) continuous current (14A peak). Only bulk input and output n SnPb or RoHS Compliant Finish capacitors are needed to complete the design. n UltraFast Transient Response The low profile and light weight package easily mounts n Current Mode Control on the back side of PC boards. The Module regulator n Up to 95% Efficiency at 5V , 3.3V IN OUT can be synchronized with an external clock for reducing n Programmable Soft-Start undesirable frequency harmonics and allows PolyPhase n Output Overvoltage Protection operation for high load currents. n Enhanced (15mm 15mm 2.82mm) Surface Mount An onboard differential remote sense amplifier can be used LGA and (15mm 15mm 3.42mm) BGA Packages to accurately regulate an output voltage independent of load current. The onboard remote sense amplifier is not available in the LTM4601A-1. APPLICATIONS L, LT, LTC, LTM, Module and PolyPhase are registered trademarks of Linear Technology n Telecom and Networking Equipment Corporation. UltraFast and LTpowerCAD are trademarks of Linear Technology Corporation. n All other trademarks are the property of their respective owners. Protected by U.S. Patents Servers including 5481178, 5847554, 6304066, 6476589, 6580258, 6677210, 6774611. TYPICAL APPLICATION Efficiency and Power Loss 1.5V/12A Power Supply with 4.5V to 20V Input vs Load Current 95 4.0 CLOCK SYNC EFFICIENCY 5V V IN IN TRACK/SS CONTROL 90 4.5V TO 20V 3.5 V PLLIN TRACK/SS V IN OUT 85 1.5V 12V PGOOD V IN 3.0 OUT 100pF 12A 80 V FB 2.5 75 ON/OFF RUN MARG0 MARGIN 12V IN MARG1 CONTROL COMP C 70 LTM4601A OUT 2.0 C IN INTV V 5V CC OUT LCL IN 65 DRV DIFFV CC OUT 1.5 + MPGM V OSNS 60 V POWER LOSS OSNS 1.0 R1 55 f 392k SGND PGND SET R SET 40.2k 50 0.5 5% MARGIN 0 2 4 6 8 10 12 14 4601A TA01a LOAD CURRENT (A) 4601A TA01b 4601afe 1 For more information www.linear.com/LTM4601A EFFICIENCY (%)LTM4601A/LTM4601A-1 (Note 1) ABSOLUTE MAXIMUM RATINGS 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 .............................................................0.3V to 5V Storage Temperature Range .................. 55C to 125C V , COMP ................................................ 0.3V to 2.7V Peak Solder Reflow Body Temperature ................. 245C FB (See Table 5. Pin Assignment) PIN CONFIGURATION TOP VIEW TOP VIEW V f IN SET MTP1 V f SET IN MTP1 MARG0 MTP2 MARG0 MARG1 MTP2 INTV CC MARG1 DRV MTP3 CC INTV CC MTP3 DRV CC V PGND FB V PGND FB PGOOD PGOOD SGND + SGND V /NC2* OSNS + DIFFV /NC3* V /NC2* OUT OSNS V OUT V OUT LCL DIFFV /NC3* OUT V OUT V /NC1* V OSNS OUT LCL BGA PACKAGE V /NC1* OSNS 133-LEAD (15mm 15mm 3.42mm) LGA PACKAGE 133-LEAD (15mm 15mm 2.82mm) T = 125C, = 15.5C/W, = 6.5C/W JMAX JA JCbottom T = 125C, = 15C/W, = 6C/W JMAX JA JC DERIVED FROM 95mm 76mm PCB WITH 4 LAYERS JA DERIVED FROM 95mm 76mm PCB WITH 4 LAYERS JA WEIGHT = 1.9g, *LTM4601A-1 ONLY WEIGHT = 1.7g, *LTM4601A-1 ONLY ORDER INFORMATION PART NUMBER PAD OR BALL FINISH PART MARKING* PACKAGE MSL TEMPERATURE RANGE TYPE RATING (Note 2) DEVICE FINISH CODE LTM4601AEV PBF Au (RoHS) LTM4601AV e4 LGA 3 40C to 85C LTM4601AIV PBF Au (RoHS) LTM4601AV e4 LGA 3 40C to 85C LTM4601AEV-1 PBF Au (RoHS) LTM4601AV-1 e4 LGA 3 40C to 85C LTM4601AIV-1 PBF Au (RoHS) LTM4601AV-1 e4 LGA 3 40C to 85C LTM4601AEY PBF SAC305 (RoHS) LTM4601AY e1 BGA 3 40C to 85C LTM4601AEY-1 PBF SAC305 (RoHS) LTM4601AY-1 e1 BGA 3 40C to 85C LTM4601AIY-1 PBF SAC305 (RoHS) LTM4601AY-1 e1 BGA 3 40C to 85C LTM4601AIY PBF SAC305 (RoHS) LTM4601AY e1 BGA 3 40C to 85C LTM4601AIY SnPb (63/37) LTM4601AY e0 BGA 3 40C to 85C LTM4601AIY-1 SnPb (63/37) LTM4601AY-1 e0 BGA 3 40C to 85C 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: www.linear.com/umodule/pcbassembly container. Pad or ball finish code is per IPC/JEDEC J-STD-609. LGA and BGA Package and Tray Drawings: Terminal Finish Part Marking: www.linear.com/packaging www.linear.com/leadfree 4601afe 2 For more information www.linear.com/LTM4601A INTV CC PLLIN TRACK/SS RUN COMP MPGM INTV CC PLLIN TRACK/SS RUN COMP MPGM