LTM4661 15V, 4A Step-Up Module Regulator FEATURES DESCRIPTION 2 n Complete Solution in <1cm (Single-Sided PCB) or The LTM 4661 is a synchronous step-up switching 2 0.5cm (Dual-Sided PCB) mode Module (power module) regulator in a 6.25mm n Input Voltage Range: 1.8V to 5.5V, Down to 0.7V 6.25mm 2.42mm BGA package. Included in the pack- After Start-Up age are the switching controller, power FETs, inductor and n Output Voltage Range: 2.5V to 15V all support components. Operating over an input voltage n 4A Switch Current of 1.8V to 5.5V, down to 0.7V after start-up, the LTM4661 n Dual Phase Operation regulates an output voltage of 2.5V to 15V set by an exter- n 3% Maximum Total DC Output Voltage Regulation nal resistor. It provides up to 4A switch current. Only bulk Over Load, Line and Temperature input and output capacitors are needed. n Output Disconnect in Shut Down The LTM4661 1MHz switching frequency and dual phase n Inrush Current Limit single output architecture enable fast transient response n External Frequency Synchronization to line and load changes and a significant reduction of n Selectable Burst Mode Operation output ripple voltage. It supports frequency synchroni- n Output Overvoltage and Overtemperature Protection zation, PolyPhase operation and selectable Burst Mode n 6.25mm 6.25mm 2.42mm BGA package operation. The LTM4661 features a true output disconnect during APPLICATIONS shutdown and inrush current limit at start-up. It also has n short-circuit, overvoltage and overtemperature protection. RF Microwave Power Amplifiers n Battery Powered DC Motors The LTM4661 is Pb-free and RoHS compliant. n 3.3V Bus Telecom Transceivers All registered trademarks and trademarks are the property of their respective owners. TYPICAL APPLICATION 5V/2A DC/DC Step-Up Module Regulator Efficiency vs Output Current at 3.3V Input 100 V = 5V OUT 95 FREQ COMP V V IN OUT V LTM4661 V IN OUT 3.3V 5V/2A 90 22F 2 22F 2 SDB 6.3V 16V MODE/SYNC FB 85 INTV CC R1 GND 31.6k 80 2.2F 4661 TA01a 75 70 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 LOAD CURRENT (A) 4661 TA01b Rev. A 1 Document Feedback For more information www.analog.com EFFICIENCY (%)LTM4661 ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (See Pin Functions, Pin Configuration Table) (Note 1) V .............................................................. 0.3V to 6V IN TOP VIEW V ........................................................... 0.3V to 18V OUT V OUT COMP, FREQ .........................................0.3V to INTV CC SDB SYNC/MODE, SDB ....................................... 0.3V to 6V 5 FB Operating Internal Temperature Range GND (Note 2) ............................................. 40C to 125C 4 COMP Storage Temperature Range .................. 55C to 125C INTV CC Peak Solder Reflow Body Temperature ................. 250C FREQ 3 SYNC/MODE GND 2 V IN 1 A B C D E BGA PBGA PACKAGEACKAGE 25-Lead (6.25mm 6.25mm 2.42mm)25-Lead (6.25mm 6.25mm 2.42mm) TT = 125C, = 125C, = 17C/W = 17C/W, , = 11C/W = 11C/W,, JMAXJMAX JCtopJCtop JCbottomJCbottom + + = 22C/W = 22C/W, , = 22C/W = 22C/W JBJB BABA JAJA WEIGHT = 0.25gWEIGHT = 0.25g ORDER INFORMATION PART MARKING* PACKAGE MSL TEMPERATURE RANGE PART NUMBER PAD OR BALL FINISH DEVICE FINISH CODE TYPE RATING (Note 2) LTM4661EY PBF SAC305 (RoHS) LTM4661Y e1 BGA 4 40C to 125C LTM4661IY PBF SAC305 (RoHS) LTM4661Y e1 BGA 4 40C to 125C LTM4661IY SnPb (63/37) LTM4661Y e0 BGA 4 40C to 125C Contact the factory for parts specified with wider operating temperature Recommended LGA and BGA PCB Assembly and Manufacturing ranges. *Pad or ball finish code is per IPC/JEDEC J-STD-609. Procedures LGA and BGA Package and Tray Drawings Rev. A 2 For more information www.analog.com