LT3685EDD#PBF

$8.49

Description：IC REG BUCK ADJ 2A 10DFN
Series：-
Mfr：Analog Devices Inc.
Package：Tube

SKU:9253b6ad3b85 Category: Voltage Regulators - DC DC Switching Regulators Brand: Analog Devices Inc.

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Product introduction

Product Detailed Parameters

Description：IC REG BUCK ADJ 2A 10DFN
Series：-
Mfr：Analog Devices Inc.
Package：Tube
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Output Type：Adjustable
Number of Outputs：1
Voltage - Input (Min)：3.6V
Voltage - Input (Max)：36V
Voltage - Output (Min/Fixed)：0.79V
Voltage - Output (Max)：20V
Current - Output：2A
Frequency - Switching：200kHz ~ 2.4MHz
Synchronous Rectifier：No
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：10-WFDFN Exposed Pad
Supplier Device Package：10-DFN (3x3)

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LT3685EDD#PBF

Overview

The LT3685EDD#PBF is a synchronous step-down switching regulator manufactured by Analog Devices Inc. It features an adjustable output voltage range from 0.79V to 20V with a maximum output current of 2A. The device operates with an input voltage range of 3.6V to 36V and supports programmable switching frequencies between 200kHz and 2.4MHz. Housed in a thermally enhanced 10-WFDFN package with exposed pad, it functions as a positive buck converter suitable for surface mount installation across industrial temperature ranges.

Feature Summary

Integrates high-side and low-side power switches for efficient synchronous rectification without requiring external Schottky diodes.
Includes cycle-by-cycle current limit protection and soft-start functionality to manage inrush currents during startup.
Features a low quiescent current shutdown mode that disconnects the output to minimize power consumption in battery applications.

Applications

Regulating power from unregulated wall transformers
Powering systems from 24V industrial supplies
Automotive battery regulation

Procurement Notes

Verify the specific suffix #PBF indicates tube packaging rather than tape and reel when ordering. Confirm the manufacturer part number matches exactly to ensure correct pinout and thermal characteristics. Check datasheet revisions for any updates to electrical specifications or recommended component values before finalizing design implementation.

Selection Notes

Select this component when a wide input voltage range up to 36V is required alongside a compact footprint. The adjustable frequency allows optimization for efficiency versus component size. Ensure the application demands a single positive output channel within the 2A current limit and can accommodate the 10-DFN package thermal requirements.

Part Context

This part belongs to the LT3685 family of high-voltage step-down regulators designed for space-constrained applications. It shares functional similarities with other Linear Technology buck converters but is distinguished by its specific 36V input rating and integrated synchronous switch architecture. The DFN package provides a small solution size compared to traditional SOIC packages.