LT3971EDD-3.3#TRPBF

$3.52

Description：IC REG BUCK 3.3V 1.2A 10DFN
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR)

SKU:f3cd89dda93f 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：Tape & Reel (TR)
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#TRPBF

Overview

The LT3971EDD-3.3#TRPBF is a synchronous step-down switching regulator manufactured by Analog Devices Inc., designed for automotive applications. It features a fixed 3.3V output voltage and supports a maximum 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) and is supplied in tape and reel format. The component functions as a single-output DC-DC converter.

Feature Summary

Synchronous buck topology for high efficiency
Automotive grade qualification
Fixed 3.3V output configuration

Applications

Automotive power distribution systems
Point-of-load regulation for electronic control units
General DC-DC conversion in vehicle networks

Procurement Notes

Verify the specific suffix #TRPBF confirms the tape and reel packaging variant rather than tube packaging. Confirm the automotive grade designation matches system requirements. Ensure the 10-DFN EP package footprint aligns with PCB layout specifications. Validate that the fixed 3.3V output meets the target load voltage needs without external adjustment.

Selection Notes

Select this part when a fixed 3.3V rail is required in automotive environments. The synchronous design offers better efficiency compared to standard diode-based regulators. The wide input range accommodates various vehicle battery conditions. Consider thermal performance due to the compact DFN package size under full load conditions.

Part Context

This component belongs to the LT3971 family of step-down regulators. It shares architectural similarities with other variants like the LT3971IMSE series but differs in package type and automotive certification. The DDD package provides a smaller footprint suitable for space-constrained automotive boards compared to MSOP options.