LTM8053/LTM8053-1 40V , 3.5A Step-Down IN Silent Switcher Module Regulator FEATURES DESCRIPTION n Complete Step-Down Switch Mode Power Supply The LTM 8053 is a 40V , 3.5A continuous, 6A peak step- IN n Low Noise Silent Switcher Architecture down Module (power module) regulator. Included in n Wide Input Voltage Range: 3.4V to 40V the package are the switching controller, power switches, n Wide Output Voltage Range: 0.97V to 15V inductor, and all support components. Operating over an n 3.5A Continuous Output Current at 12V , 5V , input voltage range of 3.4V to 40V, the LTM8053/LTM8053- IN OUT T = 85C 1 supports an output voltage range of 0.97V to 15V and a A n 6A Peak Output Current switching frequency range of 200kHz to 3MHz, each set n Parallelable for Increased Output Current by a single resistor. Only the input and output filter capaci- n Selectable Switching Frequency: 200kHz to 3MHz tors are needed to finish the design. The LTM8053-1 can n Tiny, Low Profile 6.25mm 9mm 3.32mm RoHS operate in forced continuous mode. Compliant BGA Package The low profile package enables utilization of unused space on the bottom of PC boards for high density point APPLICATIONS of load regulation. The LTM8053/LTM8053-1 is packaged in a thermally enhanced, compact over-molded ball grid n Automotive Battery Regulation array (BGA) package suitable for automated assembly n Power for Portable Products by standard surface mount equipment. The LTM8053/ n Distributed Supply Regulation LTM8053-1 is RoHS compliant. n Industrial Supplies All registered trademarks and trademarks are the property of their respective owners. n Wall Transformer Regulation TYPICAL APPLICATION 5V from 7V to 40V Step-Down Converter OUT IN IN Efficiency, V = 5V OUT 95 LTM8053 V V IN IN 7V TO 40V BIAS RUN 85 AUX 4.7F V OUT V OUT 5V 3.5A RT 75 100F 40.2k 60.4k 1MHz FB GND SYNC 8053 TA01a 65 PINS NOT USED IN THIS CIRCUIT: TR/SS, PG, SHARE 12V IN 55 0 1 2 3 4 LOAD CURRENT (A) 8053 TA01 Rev D 1 Document Feedback For more information www.analog.com EFFICIENCY (%)LTM8053/LTM8053-1 ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Notes 1, 2) TOP VIEW V , RUN, PG Voltage ................................................42V IN AUX, V , BIAS Voltage ..........................................19V RUN BANK 2 OUT V GND IN FB, TR/SS Voltage.......................................................4V 6 SYNC Voltage ..............................................................6V RT TR/SS 5 Maximum Internal Temperature ............................ 125C SHARE SYNC BANK 1 BANK 3 Storage Temperature.............................. 50C to 125C 4 PG GND V OUT Peak Reflow Solder Body Temperature ................. 250C 3 AUX BIAS 2 GND FB 1 A B C D E F G H 48-LEAD (9mm 6.25mm 3.32mm) BGA PACKAGE T = 125C, = 24.3C/W, = 5.8C/W, JMAX JA JCbottom = 16.8C/W, = 5.9C/W, WEIGHT = 0.5g JCtop JB VALUES DETERMINED PER JEDEC 51-9, 51-12 ORDER INFORMATION PART MARKING* PACKAGE MSL PART NUMBER TERMINAL FINISH DEVICE FINISH CODE TYPE RATING TEMPERATURE RANGE LTM8053EY PBF SAC305 (RoHS) LTM8053 e1 BGA 3 40C to 125C LTM8053IY PBF LTM8053EY-1 PBF SAC305 (RoHS) LTM8053-1 e1 BGA 3 40C to 125C LTM8053IY-1 PBF 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. LGA and BGA Package and Tray Drawings Rev D 2 For more information www.analog.com