LT3844 - High Voltage, Current Mode Switching Regulator Controller with Programmable Operating Frequency
DESCRIPTIONHigh Voltage, Current Mode Switching Regulator Controller with Programmable Operating Frequencyn Avionicsn Telecom Power High Voltage Step-Down Regulator 48V to 12V, 50WEf ciency and Power Lossvs Load CurrentHigh Voltage Operation: Up to 60VOutput Voltages Up to 36V (Step Down)Programmable Constant Frequency: 100kHz to 500kHz Burst Mode Operation: 120A Supply Current Programmable Soft-Startn Thermal ShutdownnThe LT3844 is a DC/DC controller used for medium power, low part count, high ef ciency supplies. It offers a wide 4V to 60V input range (7.5V minimum start-up voltage) and can implement step-down, step-up, inverting and SEPIC topologies.The LT3844 includes Burst Mode operation, which reduces quiescent current below 120A and maintains high ef -ciency at light loads. An internal high voltage bias regulator allows for simple biasing.Additional features include current mode control for fast line and load transient response; programmable xed operating frequency that can be sy FEATURES APPLICATIONS DESCRIPTIONHigh Voltage, Current Mode Switching Regulator Controller with Programmable Operating Frequencyn Avionicsn Telecom Power High Voltage Step-Down Regulator 48V to 12V, 50WEf ciency and Power Lossvs Load CurrentHigh Voltage Operation: Up to 60VOutput Voltages Up to 36V (Step Down)Programmable Constant Frequency: 100kHz to 500kHz Burst Mode Operation: 120A Supply Current Programmable Soft-Startn Thermal ShutdownnThe LT3844 is a DC/DC controller used for medium power, low part count, high ef ciency supplies. It offers a wide 4V to 60V input range (7.5V minimum start-up voltage) and can implement step-down, step-up, inverting and SEPIC topologies.The LT3844 includes Burst Mode operation, which reduces quiescent current below 120A and maintains high ef -ciency at light loads. An internal high voltage bias regulator allows for simple biasing.Additional features include current mode control for fast line and load transient response; programmable xed operating fr LT38441 3844fb TYPICAL APPLICATION FEATURES AP
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