LT3686IDD#TRPBF

Overview

The LT3686IDD#TRPBF is a monolithic step-down switching regulator manufactured by Analog Devices Inc., housed in a compact 3mm x 3mm DFN-10 package. It integrates a 37V N-channel power switch and supports an input voltage range from 3.6V to 37V, delivering up to 1.2A of output current. The device features a programmable switching frequency adjustable between 300kHz and 2.5MHz, allowing for optimization of external component size and efficiency. Operating temperatures span from -40°C to +125°C, with a typical quiescent current of 1.2mA.

Feature Summary

• Integrates a high-voltage N-channel power switch capable of handling inputs up to 37V within a minimal footprint.
• Offers flexible switching frequency adjustment across a wide range to optimize transient response and passive component size.
• Provides thermal regulation and cycle-by-cycle current limiting to ensure robust operation under fault conditions.

Applications

• Industrial control systems requiring isolated or non-isolated DC-DC conversion
• Point-of-load regulation for microprocessors and FPGAs
• Battery-powered equipment with wide input voltage ranges

Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm tape-and-reel packaging and lead-free status. Ensure the ordering part number matches the exact temperature grade and package variant required for your design. Cross-reference datasheet revisions to confirm pinout compatibility and electrical specifications before finalizing procurement.

Selection Notes

Select this component when space constraints necessitate a small DFN package while requiring support for higher input voltages up to 37V. Consider the adjustable frequency feature if minimizing inductor size is critical. Evaluate thermal performance requirements given the 1.2A continuous current capability and the thermal pad design of the DFN-10 package.

Part Context

This part belongs to the LT3686 family of high-efficiency step-down regulators designed for applications demanding high input voltage tolerance in compact form factors. It serves as a solution for converting higher bus voltages down to lower logic levels efficiently.

Replacement Considerations

LT3686IDE#PBF (Tube version)

FAQ

What is the maximum input voltage supported by the LT3686?

The LT3686 supports a maximum input voltage of 37V.

Does the LT3686 include internal compensation?

Yes, the LT3686 includes internal compensation to simplify external component selection and reduce board space.