LTM4605 Datasheet

• Single Inductor Architecture Allows V_IN Above, Below or Equal to V_OUT
• Wide V_IN Range: 4.5V to 20V
• Wide V_OUT 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)

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

The LTM4605 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.