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LTM4605 - High Efficiency Buck-Boost DC/DC μModule (Power Module) Regulator

The LTM®4605 is a high efficiency switching mode buckboost power supply. Included in the package are the switching controller, power FETs, and support components. Operating over an input voltage range of 4.5V to 20V, the LTM4605 supports an output voltage range of 0.8V to 16V, set by a resistor. This high efficiency design delivers up to 5A continuous current in boost mode (12A in buck mode). Only the inductor, sense resistor, bulk input and output capacitors are needed to finish the design.

The low profile package enables utilization of unused space on the bottom of PC boards for high density point of load regulation. The high switching frequency and current mode architecture enable a very fast transient response to line and load changes. The LTM4605 can be frequency synchronized with an external clock to reduce undesirable frequency harmonics.

Fault protection features include overvoltage and foldback current protection. The DC/DC μModule® regulator is offered in a small and thermally enhanced 15mm × 15mm × 2.8mm LGA package. The LTM4605 is Pb-free and RoHS compliant.

Features Single Inductor Architecture Allows VIN Above, Below or Equal to VOUT Wide VIN Range: 4.5V to 20V Wide VOUT Range: 0.8V to 16V 5A DC Typical (12A DC Typical at Buck Mode) High Efficiency Up to 98% Current Mode Control Power Good Output Signal Phase-Lockable Fixed Frequency: 200kHz to 400kHz Ultrafast Transient Response Current Foldback Protection Output Overvoltage Protection Small, Low Profile Surface Mount LGA Package (15mm × 15mm × 2.8mm) Typical Application

Applications Telecom, Servers and Networking Equipment Industrial and Automotive Equipment High Power Battery-Operated Devices Packaging

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