With a programmable fixed or synchronizable operating frequency from 100kHz to 1MHz, designers can choose a wide range of inductors and capacitors to optimize size, performance and cost.
The LT3959’s current-mode control results in stable operation over a wide range of supply and output voltages. The device supports designs using only ceramic capacitors, enabling a smaller solution size. Additional features include programmable soft-start, adjustable input undervoltage lockout and a power good pin.
Summary of Features: LT3959
• For Boost, SEPIC & Inverting Applications
• Wide Input Operating Voltage: 2.5V to 40V
• Onboard 6A/40V Power Switch
• 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
• Output Overvoltage & Overcurrent Protection
• Programmable Input Undervoltage Lockout with Hysteresis
The LT3959 operates from a -40°C to 125°C temperature range and is available in a 5mm x 6mm QFN-36 package. The 1000-piece price starts at $3.05 each