DescripTion
●The LTC®3789 is a high performance buck-boost switching regulator controller that operates from input voltages above, below or equal to the output voltage. The constant-frequency, current mode architecture allows a phase-lockable frequency of up to 600kHz, while an output current feedback loop provides support for battery charging. With a wide 4V to 38V (40V maximum) input and output range and seamless, low noise transitions between operating regions, the LTC3789 is ideal for automotive, telecom and battery-powered systems.
●Features
●Single Inductor Architecture Allows VIN Above, Below or Equal to Regulated VOUT
●Programmable Input or Output Current Feedback Loop
●Wide VIN Range: 4V to 38V
●1% Output Voltage Accuracy: 0.8V < VOUT < 38V
●Synchronous Rectification: Up to 98% Efficiency
●Current Mode Control
●Phase-Lockable Fixed Frequency: 200kHz to 600kHz
●No Reverse Current During Start-Up
●Power Good Output Voltage Monitor
●Internal 5.5V LDO
●Quad N-Channel MOSFET Synchronous Drive
●VOUT Disconnected from VIN During Shutdown
●Adjustable Soft-Start Output Ramping
●Available in 28-Lead QFN (4mm × 5mm) and 28-Lead SSOP Packages
●Applications
●Automotive Systems
●Distributed DC Power Systems
●High Power Battery-Operated Devices
●Industrial Control
