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LTC3780
1
3780ff
For more information www.linear.com/LTC3780
Typical Application
Features
Applications
Description
High Efficiency, Synchronous,
4-Switch Buck-Boost Controller
The LTC®3780 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 phaselockable
frequency of up to 400kHz. With a wide 4V to
30V (36V maximum) input and output range and seamless
transfers between operating modes, the LTC3780 is ideal
for automotive, telecom and battery-powered systems.
The operating mode of the controller is determined through
the FCB pin. For boost operation, the FCB mode pin can
select among Burst Mode® operation, discontinuous mode
and forced continuous mode. During buck operation, the
FCB mode pin can select among skip-cycle mode, discontinuous
mode and forced continuous mode. Burst Mode
operation and skip-cycle mode provide high efficiency
operation at light loads while forced continuous mode
and discontinuous mode operate at a constant frequency.