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LTM4601AIV-1-PBF Datasheet(PDF) 1 Page - Linear Technology |
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LTM4601AIV-1-PBF Datasheet(HTML) 1 Page - Linear Technology |
1 / 28 page LTM4601A/LTM4601A-1 1 4601afb 12A DC/DC µModules with PLL, Output Tracking and Margining n Telecom and Networking Equipment n Servers n Complete Switch Mode Power Supply n Wide Input Voltage Range: 4.5V to 20V n 12A DC Typical, 14A Peak Output Current n 0.6V to 5V Output Voltage n Output Voltage Tracking and Margining n Redundant Mounting Pads for Enhanced Solder- Joint Strength n Parallel Multiple μModules for Current Sharing n Differential Remote Sensing for Precision Regulation (LTM4601A Only) n PLL Frequency Synchronization n ±1.5% Total DC Error n Current Foldback Protection (Disabled at Start-Up) n Pb-Free (e4) RoHS Compliant Package with Gold Finish Pads n UltraFast™ Transient Response n Current Mode Control n Up to 95% Efficiency at 5VIN, 3.3VOUT n Programmable Soft-Start n Output Overvoltage Protection n Enhanced (15mm × 15mm × 2.8mm) Surface Mount LGA Package 1.5V/12A Power Supply with 4.5V to 20V Input Efficiency and Power Loss vs Load Current The LTM®4601A is a complete 12A step-down switch mode DC/DC power supply with onboard switching controller, MOSFETs, inductor and all support components. The μModule™ is housed in a small surface mount 15mm × 15mm × 2.8mm LGA package. The LTM4601A LGA package is designed with redundant mounting pads to enhance solder-joint strength for extended temperature cycling endurance. Operating over an input voltage range of 4.5 to 20V, the LTM4601A supports an output voltage range of 0.6V to 5V as well as output voltage tracking and margining. The high efficiency design delivers 12A continuous current (14A peak). Only bulk input and output capacitors are needed to complete the design. The low profile (2.8mm) and light weight (1.7g) package easily mounts on the back side of PC boards. The μModule can be synchronized with an external clock for reducing undesirable frequency harmonics and allows PolyPhase® operation for high load currents. An onboard differential remote sense amplifier can be used to accurately regulate an output voltage independent of load current. The onboard remote sense amplifier is not available in the LTM4601A-1. TYPICAL APPLICATION FEATURES APPLICATIONS DESCRIPTION L, LT, LTC, LTM and PolyPhase are registered trademarks of Linear Technology Corporation. μModule and UltraFast are trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents including 5481178, 5847554, 6304066, 6476589, 6580258, 6677210, 6774611. VOUT VFB MARG0 MARG1 VOUT_LCL DIFFVOUT VOSNS + VOSNS – PGOOD RUN COMP INTVCC DRVCC MPGM TRACK/SS PLLIN LTM4601A ON/OFF R1 392k RSET 40.2k MARGIN CONTROL COUT 4601A TA01a VOUT 1.5V 12A CLOCK SYNC TRACK/SS CONTROL 100pF CIN VIN fSET PGND SGND 5% MARGIN VIN 4.5V TO 20V LOAD CURRENT (A) 0 50 55 65 70 75 95 4601A TA01b 60 24 6 8 10 12 14 80 85 90 0.5 1.0 2.0 4.0 1.5 2.5 3.0 3.5 12VIN 12VIN 5VIN 5VIN EFFICIENCY POWER LOSS |
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