General Description
The MAX17498A/MAX17498B/MAX17498C devices are current-mode fixed-frequency flyback/boost converters with a minimum number of external components. They contain all the control circuitry required to design wide input voltage isolated and nonisolated power supplies. The MAX17498A has its rising/falling undervoltage lockout (UVLO) thresholds optimized for universal offline (85V AC to 265V AC) applications, while the MAX17498B/MAX17498C support UVLO thresholds suitable to low voltage DC-DC applications.

Benefits and Features
♦ Peak Current-Mode Converter
♦ Current-Mode Control Provides Excellent
   Transient Response
♦ Fixed Switching Frequency
   ◇ 250kHz: MAX17498A/MAX17498C
   ◇ 500kHz: MAX17498B
♦ Flexible Error Amplifier to Regulate Both Positive
   and Negative Outputs
♦ Programmable Soft-Start to Reduce Input Inrush Current
♦ Programmable Voltage or Current Soft-Start
♦ Power-Good Signal (PGOOD)
♦ Reduced Power Dissipation Under Fault
   ◇ Overcurrent Protection
   ◇ Thermal Shutdown with Hysteresis
♦ Robust Protection Features
   ◇ Programmable Current Limit
   ◇ Input Overvoltage Protection
♦ Optimized Loop Performance
   ◇ Programmable Slope Compensation
♦ High Efficiency
   ◇ Low RDSON, 175mI, 65V Rated Internal
      n-Channel MOSFET
   ◇ No Current-Sense Resistor
♦ Optional Spread Spectrum
♦ Space-Saving, 16-Pin (3mm x 3mm) TQFN Package

Applications
   Front-End AC-DC Power Supplies for Industrial Applications (Isolated and Nonisolated)
   Telecom Power Supplies
   Wide Input Range DC Input Flyback/Boost Industrial Power Supplies