LT3973EDD-3.3#PBF

$7.88

Description：IC REG BUCK 3.3V 750MA 10DFN
Series：-
Mfr：Analog Devices Inc.
Package：Tube

SKU:853f808a2eee 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 750MA 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)：4.2V
Voltage - Input (Max)：42V
Voltage - Output (Min/Fixed)：3.3V
Voltage - Output (Max)：-
Current - Output：750mA
Frequency - Switching：195kHz ~ 2.15MHz
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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LT3973EDD-3.3#PBF

Overview

The LT3973EDD-3.3#PBF is a monolithic buck switching regulator from Analog Devices Inc., designed for industrial applications. It features an adjustable frequency range and accepts a wide input voltage up to 42V while consuming only 2.5uA of quiescent current. The device provides a fixed 3.3V output with a maximum current of 0.75A. It operates within a junction temperature range of -40°C to 125°C and utilizes a 10-WFDFN package.

Feature Summary

Adjustable frequency operation for flexible design optimization
Wide input voltage capability supporting high-voltage systems
Ultra-low quiescent current consumption for energy efficiency

Applications

Industrial power supply systems
General-purpose step-down conversion
Battery-powered equipment requiring low standby current

Procurement Notes

Verify the specific suffix '#PBF' indicates lead-free compliance and RoHS adherence when sourcing. Confirm the 'EDD' designation corresponds to the industrial temperature grade (-40°C to 125°C) rather than automotive or extended grades. Ensure the fixed 3.3V output variant matches the system requirement, as other output voltages exist in the family.

Selection Notes

Select this component when a fixed 3.3V output is required without external feedback resistors. The industrial temperature rating suits harsh environments. Consider the 0.75A limit for load requirements. The adjustable frequency feature allows noise management but requires external component selection. Compare against adjustable variants if different output voltages are needed later.

Part Context

This part belongs to the LT3973 family of synchronous buck converters. It shares core architecture with variants like LT3973IDD and LT3973HDD, differing primarily in temperature grade and output configuration. The 'EDD' suffix denotes the industrial grade and 10-pin DFN package. It serves as a compact solution for mid-range current applications in regulated power supplies.

Replacement Considerations

LT3973IDD-3.3#PBF offers similar electrical characteristics but may differ in temperature rating or packaging specifics. LT3973HDD-3.3#PBF is the automotive-grade alternative. Verify pin compatibility and thermal performance before substitution. Check datasheet revisions for any functional updates between manufacturing lots.

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

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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

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Mode of Transportation

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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.