LT3971EDD-3.3#PBF

$7.88

Description：IC REG BUCK 3.3V 1.2A 10DFN
Series：-
Mfr：Analog Devices Inc.
Package：Tube

SKU:c9a1b5e19dd9 Category: Voltage Regulators - DC DC Switching Regulators Brand: Analog Devices Inc.

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Product introduction

Product Detailed Parameters

Description：IC REG BUCK 3.3V 1.2A 10DFN
Series：-
Mfr：Analog Devices Inc.
Package：Tube
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Output Type：Fixed
Number of Outputs：1
Voltage - Input (Min)：4.3V
Voltage - Input (Max)：38V
Voltage - Output (Min/Fixed)：3.3V
Voltage - Output (Max)：-
Current - Output：1.2A
Frequency - Switching：200kHz ~ 2MHz
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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LT3971EDD-3.3#PBF

Overview

The LT3971EDD-3.3#PBF is a synchronous step-down switching regulator manufactured by Analog Devices Inc., designed for automotive applications. It features a wide input voltage range from 4.3V to 38V and delivers a fixed output of 3.3V at up to 1.2A. The device operates with an adjustable switching frequency up to 2MHz and maintains low quiescent current of 2.8µA during regulation. It utilizes a 10-lead DFN package with an exposed pad for thermal management.

Feature Summary

Synchronous buck topology with integrated high-efficiency power switch
Adjustable switching frequency for optimized component size and transient response
Low quiescent current operation with Burst Mode functionality for light-load efficiency
Automotive-grade qualification for reliability in harsh environments

Applications

Automotive infotainment systems
Telematics control units
Body electronics power distribution
Industrial sensor node power supplies

Procurement Notes

Verify the specific suffix #PBF indicates lead-free tube packaging when ordering. Confirm automotive grade requirements align with AEC-Q100 standards if applicable. Ensure the 10-DFN EP footprint matches the PCB layout design. Check for RoHS compliance documentation prior to integration into final assemblies.

Selection Notes

Select this part for designs requiring a fixed 3.3V output from a wide input range. The DFN package suits space-constrained layouts. Consider the 2MHz frequency option to minimize external inductor size. Verify thermal performance under maximum load conditions given the exposed pad requirement.

Part Context

This component belongs to the LT3971 family of ultra-low quiescent current buck regulators. It shares architectural similarities with the LT3971A but differs in specific electrical characteristics and package options. The EDD variant specifically denotes the DFN package form factor suitable for surface mount assembly.