LT3684EDD#PBF

Overview

The LT3684EDD#PBF is a monolithic step-down switching regulator from Analog Devices Inc., housed in a 10-WFDFN exposed pad package. It accepts input voltages up to 36V and delivers a maximum output current of 2A. The device features an adjustable switching frequency ranging from 300kHz to 2.8MHz, allowing optimization for efficiency or size. Key electrical parameters include a low shutdown quiescent current of less than 1µA and an integrated boost diode. The unit supports positive adjustable output voltage configuration with a minimum output of 0.79V.

Feature Summary

• Integrates a high-voltage power switch capable of handling input voltages up to 36V
• Features an adjustable switching frequency range to balance performance and component size
• Includes an internal boost diode to facilitate operation with low output voltages
• Provides a Power Good signal indicator for system monitoring

Applications

• Battery-powered systems requiring efficient voltage regulation
• Industrial control applications with wide input voltage ranges
• Portable equipment utilizing single-cell lithium-ion batteries
• General-purpose point-of-load regulation circuits

Procurement Notes

Verify the specific suffix #PBF indicates lead-free RoHS compliance when sourcing. Confirm the DFN-10 package variant matches the footprint requirements of the target PCB design. Ensure the supplier provides official datasheets to validate the 36V absolute maximum rating and thermal characteristics for the exposed pad mounting style.

Selection Notes

Select this component when a compact solution is needed for inputs exceeding standard 5V or 12V rails. The adjustable frequency allows designers to minimize external inductor and capacitor sizes. Consider the 2A current limit for load requirements and ensure adequate thermal dissipation through the exposed pad due to the dense package.

Part Context

This part belongs to the LT3684 family of buck regulators designed by Analog Devices (formerly Linear Technology). It shares architectural similarities with other high-voltage synchronous and non-synchronous converters but is distinguished by its specific 2A current rating and non-synchronous topology with an integrated boost diode.

Replacement Considerations

LT3684EDD#TRPBF: Tape and reel version of the same device; functionally identical but differs in packaging format.