LT3971EDD-3.3

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

SKU:1aa6c744ebe4 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)
Grade：-
Qualification：-

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LT3971EDD-3.3

Overview

The LT3971EDD-3.3 is a synchronous step-down DC-to-DC converter manufactured by Analog Devices Inc., designed for automotive applications. It features a fixed 3.3V output voltage and supports a maximum continuous output current of 1.2A. The device operates with an input voltage range from 4.3V to 38V. It utilizes a 10-pin DFN package with an exposed pad (EP) for thermal management. The integrated switching frequency is adjustable, allowing optimization for efficiency or component size.

Feature Summary

Synchronous buck topology for high efficiency
Automotive-grade reliability specification
Wide input voltage capability up to 38V
Adjustable switching frequency operation

Applications

Automotive power distribution systems
High-voltage battery-powered equipment
Industrial control modules
Point-of-load regulation in harsh environments

Procurement Notes

Verify the specific suffix designation to confirm the packaging format. The #PBF variant indicates tube packaging, while #TRPBF indicates tape and reel. Ensure the order matches the required handling method for assembly processes. Confirm RoHS compliance status through official documentation before procurement.

Selection Notes

Select this component when a fixed 3.3V rail is required from a wide input range. The 1.2A current rating suits moderate load applications. Consider the DFN package for space-constrained designs requiring effective heat dissipation via the exposed pad. Verify that the application environment meets automotive qualification standards if used in vehicle systems.

Part Context

This part belongs to the LT3971 family of monolithic buck switching regulators. The series offers various output voltage options and package types to suit different design constraints. The EDD suffix specifically denotes the 10-lead DFN EP package configuration, distinguishing it from MSOP or other form factors within the same functional family.

Replacement Considerations

LT3971EDD-5#PBF provides a 5V output option in the identical package. LT3971IMSE-3.3#PBF offers the same electrical specifications but in a 10-MSOP package. Cross-reference pinouts and thermal characteristics when substituting between package types.

How to buy

Online and offline orders are supported. If the item is available for online purchase, you can place it in the cart; for wholesale pricing, please contact our product manager for a quote.

Payment Method

Payment methods: T/T, WeChat Pay, credit cards, Google Pay, Apple Pay . Buyer covers shipping, fees, duties, and taxes; contact our product manager if you need a contract/procurement process.

Delivery time

In-stock items usually ship within 24 hours. Otherwise, shipment is arranged 1 to 2 days after the items arrive at our warehouse. Timing depends on destination and shipping method.

Freight calculation

Freight cost depends on destination, package size, and weight . We offer shipping options via DHL, FedEx, UPS, and TNT , and can ship using your freight account upon request.

Mode of Transportation

We ship via DHL, FedEx, UPS, and TNT. If you prefer a specific logistics provider, we can ship using your designated carrier.

Return and Refund

Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.