LTM4646 Dual 10A or Single 20A Module Regulator FEATURES DESCRIPTION n Dual 10A or Single 20A Output The LTM 4646 is a complete dual 10A output switching n Wide Input Voltage Range: 4.5V to 20V mode DC/DC power supply. Included in the package are n 2.375V with CPWR Bias the switching controller, power FETs, inductors, and all MIN n Output Voltage Range: 0.6V to 5.5V supporting components. Operating from an input voltage n 1.5% Maximum Total DC Output Error range of 4.5V to 20V, the LTM4646 supports two outputs n Multiphase Current Sharing each with an output voltage range of 0.6V to 5.5V, set by n Differential Remote Sense Amplifier, Each Channel external resistors. Its high efficiency design delivers up to n Current Mode Control/Fast Transient Response 10A continuous current for each output. Only a few input n Up to 96% Efficiency and output capacitors are needed. n Adjustable Switching Frequency (250kHz to 1.3MHz) The device supports frequency synchronization, multiphase n Frequency Synchronization operation, high efficiency light load operation and output n Overcurrent Foldback Protection voltage tracking for supply rail sequencing and has an n Output Overvoltage Protection onboard temperature diode per channel for device tempera- n Internal or External Compensation ture monitoring. High switching frequency and a current n Built-In Temperature Monitoring Diode mode architecture enable a very fast transient response to n SnPb or RoHS Compliant Finish line and load changes without sacrificing stability. n 11.25mm 15mm 5.01mm BGA Package Fault protection features include overvoltage and overcur- rent protection. The power module is offered in a small APPLICATIONS footprint 11.25mm 15mm 5.01mm BGA package. n Point-of-Load Power Supplies The LTM4646 is available with SnPb or RoHS compliant n Telecom and Networking Equipment terminal finish. n Industrial Equipment All registered trademarks and trademarks are the property of their respective owners. Protected n Medical Equipment by U.S. patents, including 5481178, 5847554, 6580258, 6304066, 6476589, 6774611. Efficiency, 12V to 0.9V, TYPICAL APPLICATION 1.2V at 10A Each V IN 95 4.5V 10F TO 20V 4 130k 90 V V CPWR INTV IN1 IN2 CC VRNG RUN1 MODE PLLIN RUN2 DRV CC 85 4.7F V V OUT1 OUT2 0.9V V 1.2V OUT2 V OUT1 80 AT 10A V AT 10A V OUTS1 OUTS2 LTM4646 V V FB2 100F FB1 100F 4 121k 60.4k 30.1k 75 4 12V TO 1.2V EFF, 500kHz IN V V OUTS1 OUTS2 12V TO 0.9V EFF, 400kHz IN 70 COMP1A COMP2A 1 2 3 4 5 6 7 8 9 10 COMP1B COMP2B PINS NOT USED IN THIS CIRCUIT: OUTPUT CURRENT (A) TRACK/SS1 TRACK/SS2 4646 TA01b FREQ SGND GND PGOOD1, PGOOD2, EXTV , CC 0.1F 0.1F + + TEMP1 , TEMP1 , TEMP2 , TEMP2 4646 TA01a 115k PHASMD, CLKOUT, SW1, SW2 Rev. A 1 Document Feedback For more information www.analog.com EFFICIENCY (%)LTM4646 ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1) TOP VIEW 1 2 3 4 5 6 7 8 CPWR, V , V ....................................... 0.3V to 22V IN1 IN2 TEMP2 V , V ................................................... 2V to 22V SW1 SW2 A PGOOD1, PGOOD2, RUN1, RUN2, DRV , V CC IN2 + TEMP2 INTV , EXTV , V , V , V , B CC CC OUT1 OUT2 OUTS1 V OUT2 V ..................................................... 0.3V to 6V GND OUTS2 C TRACK/SS1, TRACK/SS2 ............................. 0.3V to 5V GND SW2 FREQ, VRNG, PHASMD, V VRNG SGND OUTS2 RUN2 D MODE PLLIN ............................0.3V to INTV +0.3 CC EXTV V V CC V (Note 6) ....................................... 0.3V to V COMP2B OUTS2 COMP2A FB2 PGOOD2 OUTS1 FB1 E V , V (Note 6).................0.3V to INTV +0.3V OUTS2 FB1 CC MODE INTV CPWR CC FREQ TRACK/SS2 PLLIN CLKOUT COMP1A, COMP2A (Note 6) ..................... 0.3V to 2.7V F COMP1B, COMP2B, V .......................... 0.3V to 2.7V FB2 DRV V V CC COMP1B OUTS1 COMP1A FB1 PGOOD1 DRV Peak Output Current .................................100mA CC G Internal Operating Temperature PHASMD SGND TRACK/SS1 RUN1 Range (Note 2) .................................. 40C to 125C H Storage Temperature Range .................. 55C to 125C SW1 V GND OUTS1 Peak Solder Reflow Package Body Temperature .... 245C J V OUT1 TEMP1 K GND V + IN1 TEMP1 L BGA PACKAGE 88-LEAD (15mm 11.25mm 5..01mm) T = 125C, = 12.6C/W, = 1.8C/W, JMAX JCtop JCbottom = 2.3C/W, = 9.6C/W JB JA VALUES DEFINED PER JESD51-12 WEIGHT = 2.1g ORDER INFORMATION PART MARKING* PACKAGE MSL TEMPERATURE RANGE PART NUMBER BALL FINISH DEVICE FINISH CODE TYPE RATING (SEE NOTE 2) LTM4646EY PBF LTM4646Y SAC305 (RoHS) e1 LTM4646IY PBF LTM4646Y BGA 3 40C to 125C LTM4646IY SnPb (63/37) LTM4646Y e0 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. Ball finish code is per IPC/JEDEC J-STD-609. LGA and BGA Package and Tray Drawings Rev. A 2 For more information www.analog.com