LTM4622 Dual Ultrathin 2.5A or Single 5A Step-Down DC/DC Module Regulator FEATURES DESCRIPTION 2 n Complete Solution in <1cm The LTM 4622 is a complete dual 2.5A step-down switch- n Wide Input Voltage Range: 3.6V to 20V ing mode Module (powermodule) regulator in a tiny n 3.3V Input Compatible with V Tied to INTV ultrathin 6.25mm 6.25mm 1.82mm LGA and 6.25mm IN CC n 0.6V to 5.5V Output Voltage 6.25mm 2.42mm BGA packages. Included in the pack- n Dual 2.5A (3A Peak) or Single 5A Output Current age are the switching controller, power FETs, inductor and n 1.5% Maximum Total Output Voltage Regulation support components. Operating over an input voltage Error Over Load, Line and Temperature range of 3.6V to 20V, the LTM4622 supports an output n Current Mode Control, Fast Transient Response voltage range of 0.6V to 5.5V, set by a single external n External Frequency Synchronization resistor. Its high efficiency design delivers dual 2.5A con- n Multiphase Parallelable with Current Sharing tinuous, 3A peak, output current. Only a few ceramic input n Output Voltage Tracking and Soft-Start Capability and output capacitors are needed. n Selectable Burst Mode Operation The LTM4622 supports selectable Burst Mode operation n Overvoltage Input and Overtemperature Protection and output voltage tracking for supply rail sequencing. n Power Good Indicators Its high switching frequency and current mode control n 6.25mm 6.25mm 1.82mm LGA and 6.25mm enable a very fast transient response to line and load 6.25mm 2.42mm BGA Packages changes without sacrificing stability. Fault protection features include input overvoltage, output APPLICATIONS overcurrent and overtemperature protection. n General Purpose Point-of-Load Conversion The LTM4622 is available with SnPb (BGA) or RoHS com- n Telecom, Networking and Industrial Equipment pliant terminal finish. n Medical Diagnostic Equipment All registered trademarks and trademarks are the property of their respective owners. n Test and Debug Systems TYPICAL APPLICATION 1.5V and 1V Dual Output DC/DC Step-Down Module Regulator 1.5V Output Efficiency vs Load Current 95 PGOOD1 PGOOD2 90 V OUT1 V V IN1 OUT1 1V, 2.5A V IN 85 47F V IN2 3.6V TO 20V 4.7F LTM4622 RUN1 80 25V V OUT2 V OUT2 RUN2 1.5V, 2.5A 47F 75 INTV COMP1 CC SYNC/MODE COMP2 70 TRACK/SS1 FB1 65 V = 5V IN TRACK/SS2 FB2 V = 12V IN 90.9k 60 40.2k FREQ 0 2.5 3 0.5 1.0 1.5 2.0 GND 4622 TA01a LOAD CURRENT (A) 4622 TA01b Rev. H 1 Document Feedback For more information www.analog.com EFFICIENCY (%)LTM4622 (Note 1) ABSOLUTE MAXIMUM RATINGS V , V ................................................... 0.3V to 22V Operating Internal Temperature Range IN1 IN2 V ............................................................. 0.3V to 6V (Note 2) .................................................. 40C to 125C OUT PGOOD1, PGOOD2 ..................................... 0.3V to 18V Storage Temperature Range .................. 55C to 125C RUN1, RUN2 .................................... 0.3V to V + 0.3V Peak Solder Reflow Body Temperature .................260C IN INTV , TRACK/SS1, TRACK/SS2 ............ 0.3V to 3.6V CC SYNC/MODE, COMP1, COMP2, FB1, FB2 ............................................... 0.3V to INTV CC PIN CONFIGURATION (See Pin Functions, Pin Configuration Table) TOP VIEW TOP VIEW SYNC/ SYNC/ COMP2 GND MODE GND COMP1 COMP2 GND MODE GND COMP1 5 5 PGOOD2 FREQ PGOOD2 FREQ PGOOD1 PGOOD1 FB2 FB2 4 4 FB1 FB1 INTV INTV CC CC V V IN1 IN1 TRACK/SS2 TRACK/SS2 3 3 TRACK/SS1 TRACK/SS1 V V IN2 IN2 RUN1 RUN1 RUN2 RUN2 2 2 V V IN1 IN1 V V GND GND IN2 IN2 V 1 V V 1 V OUT2 OUT1 OUT2 OUT1 A B C D E A B C D E LGA PACKAGE BGA PACKAGE 25-LEAD (6.25mm 6.25mm 1.82mm) 25-LEAD (6.25mm 6.25mm 2.42mm) T = 125C, = 17C/W, = 11C/W, T = 125C, = 17C/W, = 11C/W, JMAX JCtop JCbottom JMAX JCtop JCbottom JB + BA = 22C/W, JA = 22C/W, JB + BA = 22C/W, JA = 22C/W, WEIGHT = 0.21g WEIGHT = 0.25g ORDER INFORMATION PART MARKING* PACKAGE MSL TEMPERATURE RANGE PART NUMBER PAD OR BALL FINISH DEVICE FINISH CODE TYPE RATING (Note 2) LTM4622EV PBF Au (RoHS) LTM4622V e4 LGA 4 40C to 125C LTM4622IV PBF Au (RoHS) LTM4622V e4 LGA 4 40C to 125C LTM4622EY PBF SAC305 (RoHS) LTM4622Y e1 BGA 4 40C to 125C LTM4622IY PBF SAC305 (RoHS) LTM4622Y e1 BGA 4 40C to 125C LTM4622IY SnPb (63/37) LTM4622Y e0 BGA 4 40C to 125C 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. H 2 For more information www.analog.com