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LTM4601A-1

Linear Technology
Part Number LTM4601A-1
Manufacturer Linear Technology
Description 12A uModule Regulator
Published Jul 5, 2009
Detailed Description FEATURES n Complete Switch Mode Power Supply n Wide Input Voltage Range: 4.5V to 20V n 12A DC Typical, 14A Peak Outpu...
Datasheet PDF File LTM4601A-1 PDF File

LTM4601A-1
LTM4601A-1

Overview
FEATURES 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 SnPb or RoHS Compliant Finish 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.
82mm) Surface Mount LGA and (15mm × 15mm × 3.
42mm) BGA Packages APPLICATIONS n Telecom and Networking Equipment n Servers LTM4601A/LTM4601A-1 12A µModule Regulators with PLL, Output Tracking and Margining DESCRIPTION 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® regulator is housed in a small surface mount 15mm × 15mm × 2.
82mm LGA or 15mm × 15mm × 3.
42mm BGA package.
The LTM4601A LGA and BGA packages are designed with redundant mounting pads to enhance solder-joint strength for extended temperature cycling endurance.
Operating over an input voltage range of 4.
5V 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 and light weight package easily mounts on the back side of PC boards.
The µModule regulator 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 regul...


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