Maxim Integrated MAX17686

Description

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 low-resistance, 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 auto¬mation are available in EE-Sim.

Features

• 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

Typical applications

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

More information

• Datasheet
• IC product information