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LTM4601EV-1-PBF Datasheet(PDF) 1 Page - Linear Technology |
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LTM4601EV-1-PBF Datasheet(HTML) 1 Page - Linear Technology |
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1 / 28 page  LTM4601/LTM4601-1 1 4601f 12A DC/DC µModules with PLL, Output Tracking and Margining ■ Telecom and Networking Equipment ■ Servers ■ Industrial Equipment ■ Point of Load Regulation ■ Complete Switch Mode Power Supply ■ Wide Input Voltage Range: 4.5V to 20V ■ 12A DC Typical, 14A Peak Output Current ■ 0.6V to 5V Output Voltage ■ Output Voltage Tracking and Margining ■ Parallel Multiple µModules for Current Sharing ■ Differential Remote Sensing for Precision Regulation (LTM4601 Only) ■ PLL Frequency Synchronization ■ ±1.5% Regulation ■ Current Foldback Protection (Disabled at Start-Up) ■ Pb-Free (e4) RoHS Compliant Package with Gold Finish Pads ■ Ultrafast Transient Response ■ Current Mode Control ■ Up to 95% Efficiency at 5VIN, 3.3VOUT ■ Programmable Soft-Start ■ Output Overvoltage Protection ■ Small Footprint, Low Profile (15mm × 15mm × 2.8mm) Surface Mount LGA Package 1.5V/12A Power Supply with 4.5V to 20V Input APPLICATIO S FEATURES DESCRIPTIO TYPICAL APPLICATIO Efficiency and Power Loss vs Load Current The LTM ®4601 is a complete 12A step-down switch mode DC/DC power supply with onboard switching controller, MOSFETs, inductor and all support components. The µModuleTM is housed in a small surface mount 15mm ×15mm × 2.8mm LGA package. Operating over an input voltage range of 4.5 to 20V, the LTM4601 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) pack- age easily mounts in unused space on the back side of PC boards for high density point of load regulation. The µModule can be synchronized with an external clock for reducing undesirable frequency harmonics and allows PolyPhase ® operation for high load currents. A high switching frequency and adaptive on-time current mode architecture deliver a very fast transient response to line and load changes without sacrificing stability. 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 LTM4601-1. , LTC, LT and PolyPhase are registered trademarks of Linear Technology Corporation. µModule is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 5481178, 5847554, 6580258, 6304066, 6476589, 6774611, 6677210 VOUT VFB MARG0 MARG1 VOUT_LCL DIFFVOUT VOSNS + VOSNS – PGOOD RUN COMP INTVCC DRVCC MPGM TRACK/SS PLLIN LTM4601 ON/OFF R1 392k RSET 40.2k MARGIN CONTROL COUT 4601 TA01a VOUT 1.5V 12A CLOCK SYNC TRACK/SS CONTROL 100pF CIN VIN fSET PGND SGND 5% MARGIN VIN 4.5V TO 20V OUTPUT CURRENT (A) 0 50 55 65 70 75 95 4601 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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