LT3758A

FEATURES nn Wide Input Voltage Range: 5.5V to 100V nn Positive or Negative Output Voltage Programming with a Single Feedback Pin nn Current Mode Control Provides Excellent Transient Response nn Programmable Operating Frequency (100kHz to 1MHz) with One External Resistor nn Synchronizable to an External Clock nn Low Shutdown Current < 1µA nn Internal 7.2V Low Dropout Voltage Regulator nn Programmable Input Undervoltage Lockout with Hysteresis nn Programmable Soft-Start nn Small 10-Lead DFN (3mm × 3mm) and MSOPE Packages APPLICATIONS nn Automotive nn Telecom nn Industrial All registered trademarks and trademarks are the property of their respective owners. LT3758/LT3758A High Input Voltage, Boost, Flyback, SEPIC and Inverting Controller DESCRIPTION The LT®3758/LT3758A are wide input range, current mode, DC/DC controllers which are capable of generating either positive or negative output voltages. They can be configured as either a boost, flyback, SEPIC or inverting converter. The LT3758/LT3758A drive a low side external N-channel power MOSFET from an internal regulated 7.2V supply. The fixed frequency, current-mode architecture results in stable operation over a wide range of supply and output voltages. The operating frequency of LT3758/LT3758A can be set with an external resistor over a 100kHz to 1MHz range, and can be synchronized to an external clock using the SYNC pin. A minimum operating supply voltage of 5.5V, and a low shutdown quiescent current of less than 1µA, make t...