Overview
Features and Benefits
- 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
Product Details
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
Product Categories
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
Documentation & Resources
Tools & Simulations
EE-Sim Power® Tools
The EE-Sim DC-DC Converter Tool uses your requirements to quickly create a complete power design including a schematic, BOM with commercially available parts, and time and frequency domain simulations. Your customized schematic can be downloaded for further analysis in the standalone EE-Sim OASIS Simulator, featuring SIMPLIS and SIMetrix SPICE engines.

Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
Support & Discussions
Sample & Buy
Ordering FAQs
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Buy Now Pricing
(**) Displayed Buy Now Price and Price Range is based on small quantity orders.
List Pricing
(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
Lead Times
Please see the latest communication from our CCO regarding lead times.
Sampling
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Evaluation Boards
Pricing displayed is based on 1-piece.
Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.