LTM4612 EN55022B Compliant 36V , 15V , 5A, IN OUT DC/DC Module Regulator FEATURES DESCRIPTION n Complete Low EMI Switch Mode Power Supply The LTM 4612 is a EN55022 Class B certified high voltage n EN55022 Class B Compliant input and output, 5A switching mode DC/DC power supply. n Wide Input Voltage Range: 5V to 36V Included in the package are the switching controller, power n 3.3V to 15V Output Voltage Range FETs, inductor and all support components. Operating n 5A DC, 7A Peak Output Current over an input voltage range of 5V to 36V, the LTM4612 n Low Input and Output Referred Noise supports an output voltage range of 3.3V to 15V, set by a n Output Voltage Tracking and Margining single resistor. Only bulk input and output capacitors are n Power Good Tracks with Margining needed to finish the design. n PLL Frequency Synchronization High switching frequency and an adaptive on-time current n 1.5% Set Point Accuracy mode architecture enables a very fast transient response n Current Foldback Protection (Disabled at Start-Up) to line and load changes without sacrificing stability. n Parallel/Current Sharing n The onboard input filter and noise cancellation circuits Ultrafast Transient Response n achieve low noise coupling, thus effectively reducing the Current Mode Control n electromagnetic interference (EMI)see Figures 4 and 8. Programmable Soft-Start n Furthermore, the DC/DC Module regulator can be syn- Output Overvoltage Protection n chronized with an external clock to reduce undesirable 55C to 125C Operating Temperature Range frequency harmonics and allow PolyPhase operation for (LTM4612MPV) n high load currents. Small Surface Mount Footprint, Low Profile (15mm 15mm 2.8mm) LGA Package The LTM4612 is offered in a space saving and thermally enhanced 15mm 15mm 2.8mm LGA package, which APPLICATIONS enables utilization of unused space on the bottom of PC boards for high density point-of-load regulation. The n Telecom and Networking Equipment LTM4612 is Pb-free and RoHS compliant. n Industrial and Avionic Equipment L, LT, LTC, LTM, Linear Technology, the Linear logo, PolyPhase and Module are registered n RF Systems trademarks and LTpowerCAD is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. TYPICAL APPLICATION Radiated Emission Scan at 24V , 5V /5A IN OUT 70 5V/5A Ultralow Noise Module with 7V to 36V Input 60 V CLOCK SYNC IN 7V 50 TO 36V 2M 100k V PLLIN IN V OUT 40 EN55022 CLASS B LIMIT V 5V PGOOD OUT 5A RUN LTM4612 100pF 30 C OUT COMP V FB INTV 13.7k CC 20 C IN DRV CC FCB 10 f SET MARG0 MARGIN TRACK/SS CONTROL MARG1 0 0.01F V D MPGM 10F 392k 10 SGND PGND 5% MARGIN 226.2 1010 30 422.4 618.6 814.8 128.1 324.3 520.5 716.7 912.9 4612 TA01 FREQUENCY (MHz) 4612 TA01b 4612fc 1 For more information www.linear.com/LTM4612 dBV/mLTM4612 ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1) TOP VIEW INTV DRV ............................................. 0.3V to 6V CC, CC V ........................................................... 0.3V to 16V OUT PLLIN, FCB, TRACK/SS, MPGM, MARG0, A V MARG1, PGOOD ....................0.3V to INTV + 0.3V IN CC B f SET V BANK 1 D C MARG0 RUN .............................................................0.3V to 5V SGND MARG1 D V , COMP ................................................ 0.3V to 2.7V FB E DRV CC PGND V , V ....................................................... 0.3V to 36V F V IN D FB BANK 2 G PGOOD Internal Operating Temperature Range (Note 2) H SGND E and I Grades ................................... 40C to 125C J NC V K NC MP Grade ........................................... 55C to 125C OUT BANK 3 L NC Junction Temperature ........................................... 125C M FCB Storage Temperature Range .................. 55C to 125C 1 2 3 4 5 6 7 8 9 10 11 12 LGA PACKAGE 133-LEAD (15mm 15mm 2.8mm) T = 125C, = 15C/W, = 6C/W JMAX JA JC DERIVED FROM 95mm 76mm PCB WITH 4 LAYERS JA WEIGHT = 1.7g ORDER INFORMATION