Miniature 5-6W No-Opto Flyback DC-DC Converter

Reference designs with Maxim Integrated IC MAX17690

Characteristics

  • Small size
  • Very low leakage inductance
  • Self-shielding package
  • Pick and placeable
  • 6W output power
  • Functional insulation
  • Isolation voltage: 1500VAC
  • Lead free and RoHS compliant
  • Designed to meet IEC60950-1, EN60950-1, UL60950-1/CSA60950-1 and AS/NZS60950.1
  • Operating temp: -40°C to 125°C

Applications

  • Isolated flyback converters
  • Industrial and telecom power supplies
  • PLC I/O modules
  • Wide-range DC-input power supplies
Electrical Properties
Order Code UI (VDC) UO1 (V) IO1 (A) L (µH) ISAT (A) NP : NS fswitch (kHz) UT (VAC)
750317248 8-28 5 1.00 8 4.2 2 : 1 143 1500
750317250 8-28 12 0.50 8 4.8 1 : 1 143 1500
750317251 18-60 12 0.50 42 1.8 2 : 1 143 1500
750317252 8-28 24 0.25 8 4.8 1 : 2 143 1500
750317253 18-60 24 0.25 42 1.8 1 : 1 143 1500

IC Characteristics

  • No optocoupler or third winding required
  • 50kHz to 250kHz programmable switching frequency
  • Input EN/UVLO feature
  • Input overvoltage protection
  • Programmable soft-start
  • Hiccup-mode short-circuit protection