The LT3759 operates over an input voltage range from 1.6V to 42V and is well suited for industrial, automotive, medical and telecom applications. With a programmable and synchronizable operating frequency from 100kHz to 1MHz, designers can choose a wide range of inductors and capacitors to optimize size, performance and cost. The fixed frequency, current-mode control architecture results in stable operation over a wide range of supply and output voltages, and the use of all ceramic capacitors, enables a smaller solution size. The LT3759 drives an external N-channel MOSFET from an internally regulated 4.75V supply. Additional features include programmable soft-start, an accurate 50mV current sense threshold, programmable undervoltage lockout with hysteresis, and a power good signal along with output overvoltage and overcurrent protection.
The LT3759 is available in a thermally enhanced MSOP-12 package with extended and industrial operating junction temperature ranges from -40°C to 125°C while the H-grade version operates over a -40°C to 150°C junction temperature range.
Summary of Features: LT3759
For Boost, SEPIC & Inverting Applications
Wide Input Operating Voltage:
1.6V to 42V
• Positive or Negative Output Voltage Setting with a Single Feedback Pin
• Selectable Fixed 100kHz to 1MHz Operating Frequency
• Synchronizable to an External Clock
• Programmable Soft Start
• True Current-Mode Control
• Internal 4.75V Low Dropout Voltage Regulator
• Programmable Input Undervoltage Lockout with Hysteresis