LTM4653 EN55022B Compliant 58V, 4A Step-Down DC/DC Module Regulator FEATURES DESCRIPTION n Complete Low EMI Switch Mode Power Supply The LTM 4653 is an ultralow noise 58V, 4A DC/DC step- n EN55022 Class B Compliant down Module regulator designed to meet the radiated n Wide Input Voltage Range: 3.1V to 58V emissions requirements of EN55022. Conducted emis- n Up to 4A Output Current sion requirements can be met by adding standard filter n Output Voltage Range: 0.5V V 0.94 V components. Included in the package are the switch- OUT IN n 1.67% Total DC Output Voltage Error Over Line, ing controller, power MOSFETs, inductor, filters and Load and Temperature (40C to 125C) supportcomponents. n Parallel and Current Share with Multiple LTM4653s Operating over an input voltage range of 3.1V to 58V, the n Analog Output Current Indicator LTM4653 supports an output voltage range of 0.5V to n Programmable Input Voltage Limiting 94% of V , and a switching frequency range of 250kHz IN n Constant-Frequency Current Mode Control to 3MHz (400kHz default), each set by a single resistor. n Power Good Indicator and Programmable Soft-Start For high load currents, the LTM4653 can be paralleled in n Overcurrent/Overvoltage/Overtemperature Protection PolyPhase operation and synchronized to an external n 15mm 9mm 5.01mm BGA Package clock. Only the bulk input and output filter capacitors are needed to finish the design. APPLICATIONS The LTM4653 is offered in a 15mm 9mm 5.01mm BGA n Avionics, Industrial Control and Test Equipment package with SnPb or RoHS compliant terminalfinish. n Video, Imaging and Instrumentation All registered trademarks and trademarks are the property of their respective owners. Protected n by U.S. Patents, including 5481178, 5705919, 5847554, 6580258. 48V Telecom and Network Power Supplies n RF Systems TYPICAL APPLICATION 4A, 24V Output Low EMI DC/DC Module Regulator Radiated Emission Scan in a 10m Chamber with Analog Output Current Indicator LTM4653 Delivering 24V at 3.5A, from 48V OUT IN I OUT 70 V IN 24V , OUT MEAS DIST 10m V V IN OUT 28V TO 58V UP TO 4A 60 SPEC DIST 10m 4.7F V SV OSNS 10F IN 50 2 V LOAD D 40 SGND RUN 4.7F 30 PGND INTV CC LTM4653 20 VINREG ANALOG OUTPUT 10 1 HORIZONTAL COMPa IMONa CURRENT INDICATOR 2 VERTICAL 10nF IMONb V = 0.25 I IMON OUT 0 QPK LIMIT + 499 FORMAL f 10 SET PINS NOT USED IN 30 130 230 330 430 530 630 730 830 930 1000 THIS CIRCUIT: 124k GND ISETa ISETb FREQUENCY (MHz) 4653 TA01b CLKIN, PGOOD, COMPb 4653 TA01a PGDFB, SW, EXTV CC + TEMP , TEMP , NC 481k Rev. A 1 Document Feedback For more information www.analog.com AMPLITUDE (dBV/m)LTM4653 ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1) (All Voltages Relative to V Unless Otherwise Indicated) OUT TOP VIEW Terminal Voltages 1 2 3 4 5 6 7 V IN V , V , SV , SW, ISETa, V , V .....0.3V to 60V IN D IN OUT OSNS A V CLKIN NC D GND, ISETb, EXTV ............................. 0.3V to 28V CC B RUN .................................... GND0.3V to PGND+60V PGND IMONb IMONa SV IN C INTV , PGDFB, VINREG, COMPa, COMPb, CC PGOOD PGDFB VINREG GND IMONa, IMONb ........................................ 0.3V to 4V D COMPb COMPa f SGND NC SET f ...................................................0.3V to INTV SET CC E CLKIN, PGOOD (Relative to GND) ........... 0.3V to 6V ISETb ISETa EXTV RUN CC F Terminal Currents INTV CC G INTV Peak Output Current (Note 8) ................30mA CC V SGND + OSNS SW TEMP ..................................................1mA to 10mA H + + TEMP TEMP TEMP TEMP TEMP .................................................10mA to 1mA J PGND Temperatures K Internal Operating Temperature Range V NC OUT L (Note 2) ............................................. 40C to 125C BGA PACKAGE Storage Temperature Range .............. 55C to 125C 77-PIN (15mm 9mm 5.01mm) T = 125C = 15.5C/W Peak Solder Reflow Package J(MAX) JA = 20.6C/W = 5.1C/W JCtop JCbot WEIGHT = 1.8 GRAMS Body Temperature ............................................ 245C NOTES: 1) VALUES ARE DETERMINED BY SIMULATION PER JESD51 CONDITIONS. 2) VALUE IS OBTAINED WITH DEMO BOARD. JA 3) REFER TO APPLICATION INFORMATION SECTION FOR LAB MEASUREMENT AND DERATING INFORMATION. ORDER INFORMATION PART MARKING* PACKAGE MSL TEMPERATURE RANGE PART NUMBER PAD OR BALL FINISH DEVICE FINISH CODE TYPE RATING (SEE NOTE 2) LTM4653EY PBF SAC305 (RoHS) e1 40C to 125C LTM4653IY PBF SAC305 (RoHS) LTM4653Y e1 BGA 3 40C to 125C LTM4653IY SnPb (63/37) e0 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