LTM8051 Quad 40V Silent Switcher Module Regulator IN with Configurable 1.2A Output Array FEATURES DESCRIPTION n Four Complete Step-Down Switching Power Supplies The LTM 8051 is quad 40V , 1.2A step-down Silent IN n Switcher Module regulator. The Silent Switcher archi- Low Noise Silent Switcher Architecture n tecture minimizes EMI while delivering high efficiency at CISPR22 Class B Compliant frequencies up to 3MHz. Included in the package are the n CISPR25 Class 5 Compliant controllers, power switches, inductors, and support com- n Wide Input Voltage Range: 3V to 40V ponents. Operating over a wide input voltage range, the n Wide Output Voltage Range: 0.8V to 8V LTM8051 supports output voltages from 0.8V to 8V, and n 1.2A Continuous Output Current per Channel at a switching frequency range of 300kHz to 3MHz, each set 12V , 3.3V , T = 85C IN OUT A by a single resistor. Only the bulk input and output filter n 1.5A Continuous Output Current per Channel at capacitors are needed to finish the design. The LTM8051 12V , 3.3V , T = 60C IN OUT A product video is available on website. n Multiphase or Multi-Module Parallelable for The LTM8051 is packaged in a compact (6.25mm Increased Output Current 11.25mm 2.22mm) over-molded Ball Grid Array (BGA) n Selectable Switching Frequency: 300kHz to 3MHz package suitable for automated assembly by standard n Compact Package (6.25mm 11.25mm 2.22mm) surface mount equipment. The LTM8051 is available with Surface Mount BGA SnPb (BGA) or RoHS compliant. Configurable Output Array APPLICATIONS The LTM8051 outputs can be paralleled in an array for up n Automated Test Equipment to 4.8A capability. n Distributed Supply Regulation 1.2A n Industrial Supplies 2.4A 1.2A 3.6A n Medical Equipment 4.8A 1.2A 1.2A All registered trademarks and trademarks are the property of their respective owners. 1.2A 1.2A 1.2A Click to view associated Video Design Idea. TYPICAL APPLICATION 1.8-5V from 7-40V Quad Step-Down Converter OUT IN Efficiency, V = 24V, BIAS = 5V IN Efciency, V = 24V, BIAS = 5V IN V IN1 95 V IN 7V to 40V RUN14 BIAS14 23.2k V OUT1 90 V OUT1 RT14 5V f = 1.3MHz SW 1.2A 47F 47.5k 85 SYNC14 FB1 SHARE14 80 V V OUT4 OUT4 1.8V VCC14 200k 100F 1.2A 75 FB4 V IN4 GND 70 V IN23 65 RUN23 BIAS23 24.9k V V OUT2 RT23 OUT2 3.3V 3.3V OUT 60 f = 1.2MHz SW 78.7k 100F 1.2A 5V OUT SYNC23 FB2 PINS NOT USED: 55 TRSS1, TRSS2, 0 0.5 1 1.5 2 TRSS3, TRSS4, SHARE23 V OUT3 V PG1, PG2, PG3, OUT3 2.5V LOAD CURRENT (A) PG4, CLKOUT14, VCC23 8051 TA01b 118k 100F 1.2A CLKOUT23 FB3 GND 1F 8051 TA01a x4 Rev. A 1 Document Feedback For more information www.analog.com EFFICIENCY (%)LTM8051 ABSOLUTE MAXIMUM RATINGS (Note 1) SYNCn .......................................................................6V V , RUNn, PGn ......................................................42V INn Maximum Internal Temperature (Note 2) .............. 125C V , BIASn ...........................................................10V OUTn Storage Temperature ............................. 55C to 125C FBn, TRSSn, SHAREn , RT , VCC .............................4V n n Peak Solder Reflow Package Body Temperature ..260C PIN CONFIGURATION TOP VIEW RUN23 RUN14 V V PG3 PG4 IN1 IN4 7 BANK2 BANK4 CLKOUT23 CLKOUT14 SYNC23 SYNC14 PG2 PG1 V V OUT2 OUT4 6 BIAS23 SHARE14 5 BANK6 V V CC23 CC14 4 GND SHARE23 BIAS14 3 TRSS2 FB2 TRSS1 TRSS4 FB1 2 BANK1 BANK3 TRSS3 FB3 RT23 RT14 FB4 V V OUT1 OUT3 BANK5 1 V IN23 A B C D E F G H J K L M N BGA PACKAGE 91-LEAD (11.25mm 6.25mm 2.22mm) T = 125C, = 16C/W, = 11.4C/W, JMAX JA JCtop = 3.5C/W, WEIGHT = 0.42g JCbot VALUES DETERMINED PER JEDEC 51-9, 51-12 ORDER INFORMATION PART MARKING* PACKAGE MSL TEMPERATURE RANGE PART NUMBER PAD OR BALL FINISH DEVICE FINISH CODE TYPE RATING (SEE NOTE 2) LTM8051EY PBF SAC305 (RoHS) e1 LTM8051IY PBF LTM8051Y BGA 3 40C to 125C LTM8051IY SnPb (63/37) e0 Device temperature grade is indicated by a label on the shipping container. This product is not recommended for second side reflow. This product is moisture sensitive. For more information, go to Pad or ball finish code is per IPC/JEDEC J-STD-609. Recommended BGA PCB Assembly and Manufacturing Procedures. BGA Package and Tray Drawings Rev. A 2 For more information www.analog.com