LTC3649EFE#PBF

LTC®3649 is a high efficiency 60V, 4A synchronous monolithic step-down regulator. The regulator features a single resistor programmable output voltage, internal compensation and high efficiencies over a wide VOUT range. The step-down regulator operates from an input voltage range of 3.1V to 60V and provides an adjustable rail-to-rail output range from (VIN – 0.5V) to ground while delivering up to 4A of output current. A user-selectable mode input is provided to allow the user to trade off ripple noise for efficiency at light loads; Burst Mode operation provides the highest efficiency at light loads, while forced continuous mode provides low output ripple. This operates with a peak current mode architecture that allows for fast transient response with inherent cycle-to-cycle current limit protection. It also features programmable output current limit, current monitoring and input voltage regulation. Typical applications are industrial, automotive.

• Switching frequency is also adjusted with an external resistor
• Single resistor VOUT programming, 95% efficiency with 12VIN and 5VOUT
• Integrated 110mohm top N-channel/50mohm bottom N-channel MOSFETs
• Accurate current monitoring (±4%) without sense resistor
• Accurate programmable output current, input voltage regulation for MPPT applications
• ±0.8% output voltage accuracy, peak current mode operation
• Programmable wire drop compensation, Burst Mode® operation, forced continuous mode
• Internal compensation and programmable soft-start, overtemperature protection
• 28-lead plastic TSSOP package, -40°C to 125°C package

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