LTM4668A Quad DC/DC Module Regulator with Configurable 1.2A Output Array FEATURES DESCRIPTION n Quad Output Step-Down Module Regulator with The LTM 4668A is a quad DC/DC step-down Module 1.2A per Output Channel (micromodule) regulator with 1.2A DC current per out- n Wide Input Voltage Range: 2.7V to 17V put. Outputs can be paralleled in an array for up to 4.8A n 0.6V to 5.5V Output Voltage capability. Included in the package are the switching n 1.2A DC, Parallelable, Output Current Each Channel controllers, power FETs, inductors and support compo- n 1.5% Total Output Voltage Regulation nents. Operating over an input voltage range of 2.7V to n 100% Duty Cycle Operation 17V, the LTM4668A supports an output voltage range of n Current Mode Control, Fast Transient Response 0.6V to 5.5V. Only bulk input and output capacitors are n External Frequency Synchronization needed. The device supports frequency synchronization, n Selectable Burst Mode Operation PolyPhase operation, selectable Burst Mode operation, n Power Good Indicator 100% duty cycle and low I operation. Its high switching Q n Over Voltage, Current and Temperature Protection frequency and a current mode architecture enables a very n 6.25mm x 6.25mm x 2.1mm BGA Package fast transient response to line and load changes without n Pin Compatible with LTM4668 (0.6V to 1.8V sacrificing stability. Output,1MHz). Fault protection features include overvoltage, overcurrent and overtemperature protection. The power module is APPLICATIONS offered in a space saving and thermally enhanced 6.25mm 6.25mm 2.1mm BGA package. The LTM4668A is avail- n Telecom, Networking and Industrial Equipment able with SnPb (BGA) or RoHS compliant terminalfinish. n Multi-Rail Point of Load Regulation n Configurable Output Array FPGAs, DSPs and ASICs Application 1.2A All registered trademarks and trademarks are the property of their respective owners. 2.4A 1.2A 3.6A 4.8A 1.2A 1.2A 1.2A 1.2A 1.2A TYPICAL APPLICATION 5V to 17V Input, Quad 1.5V, 1.8V, 2.5V, 3.3V Output DC/DC Module Regulator 3.3V Output Efficiency (Each Channel) 100 5V V V 1.5V/1.2A IN OUT1 to 17V 95 22F V FB1 47F 2 90 6.3V PGOOD1 40.2k 25V LTM4668A 85 RUN1 V 2.5V/1.2A OUT2 80 RUN2 V FB2 47F 75 6.3V RUN3 PGOOD2 19.1k RUN4 70 V OUT3 3.3V/1.2A 65 V FB3 47F 60 PGOOD3 6.3V 13.3k V = 5V IN 55 V = 12V IN INTV V 1.8V/1.2A CC OUT4 50 0.0 0.2 0.4 0.6 0.8 1.0 1.2 MODE V FB4 47F LOAD CURRENT (A) GND PGOOD4 30.1k 6.3V 4668a TA01b 4668a TA01a Rev. B 1 Document Feedback For more information www.analog.com EFFICIENCY (%)LTM4668A ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1) FB2 PGOOD3 V ............................................................. 0.3V to 17V IN FB3 V OUT2 V (per Channel) ...................................... 0.3V to 6V OUT 7 V OUT3 PGOOD2 RUN (per Channel) ..................................... 0.3V to 17V GND 6 GND PGOOD (per Channel) .................................. 0.3V to 6V RUN2 RUN3 FB (per Channel) ...................................0.3V to INTV 5 CC MODE/SYNC MODE/SYNC ................................0.3V to INTV +0.3V V CC IN 4 V IN Operating Junction Temperature (Note 2) .. 40 to 125C INTV RUN4 CC 3 Storage Temperature Range ...................... 55 to 125C RUN1 PGOOD1 Peak Solder Reflow Body Temperature .................260C 2 PGOOD4 1 V OUT4 V OUT1 FB4 FB1 A B C D E F G BGA PACKAGE 49-LEAD (6.25mm 6.25mm 2.1mm) T = 125C, = 30.5C/W, JMAX JCtop = 7.4C/W, = 29.3C/W, JCbottom JA Weight=0.7g VALUES DETERMINED PER JESD51-12 ORDER INFORMATION PART MARKING* PACKAGE MSL TEMPERATURE RANGE PART NUMBER PAD OR BALL FINISH DEVICE FINISH CODE TYPE RATING (SEE NOTE 2) LTM4668AEY PBF LTM4668AY SAC305 (RoHS) e1 BGA 4 40C to 125C LTM4668AIY PBF LTM4668AY 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 Pad or ball finish code is per IPC/JEDEC J-STD-609. to Recommended BGA PCB Assembly and Manufacturing BGA Package and Tray Drawings Procedures. Rev. B 2 For more information www.analog.com