Analog Devices MAX17686 Product Info

• Reduces External Components and Total Cost
  • No OptoCoupler
  • Synchronous Primary Operation
  • All-Ceramic Capacitors, Compact Layout
• Supports Numerous Isolated DC-DC Applications
  • Wide 4.5V to 60V Input
  • Delivers Up to 5W Output Power
• Reduces Power Dissipation
  • Peak Efficiency > 90%
  • 0.9µA (typ) Shutdown Current
• Operates Reliably in Adverse Industrial Environments
  • Peak and Sink Current-Limit Protection
  • Robust Secondary-Side Output Overcurrent Protection
  • ±1.7% Feedback Accuracy
  • Programmable EN/UVLO Threshold
  • Adjustable Soft-Start
  • Overtemperature Protection
  • -40°C to +125°C Operation

The Rainier series of isolated DC-DC products enable small, efficient solutions with a lower BOM cost. The MAX17686 is a high-voltage, high-efficiency, iso-buck DC-DC converter designed to provide isolated power up to 5W. The device operates over a wide 4.5V to 60V input and uses primary-side feedback to regulate the output voltage.

The MAX17686 uses peak-current-mode control. The lowresistance, on-chip MOSFETs ensure high efficiency at full load while simplifying the PCB layout.

The device generates a well regulated primary side voltage which is then scaled by a suitable transformer turns ratio to derive isolated secondary output rails. The MAX17686 features robust overcurrent protection on both the primary and secondary side.

The MAX17686 is available in a compact 10-pin (3mm x 2mm) TDFN package. Simulation model and design automation are available in EE-Sim.

Applications

• Floating Power Supply Generation
• Isolated Fieldbus Interfaces
• Isolated Power Supplies in Medical Equipment
• PLC I/O Modules
• Smart Meters