LT3971EDD#TRPBF

$7.88

Description：IC REG BUCK ADJ 1.2A 10DFN
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:a04c97f3a3bc 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 1.2A 10DFN
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR),Cut Tape (CT)
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Output Type：Adjustable
Number of Outputs：1
Voltage - Input (Min)：4.3V
Voltage - Input (Max)：38V
Voltage - Output (Min/Fixed)：1.19V
Voltage - Output (Max)：30V
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#TRPBF

Overview

The LT3971EDD#TRPBF is a synchronous step-down DC-to-DC converter manufactured by Analog Devices Inc. It operates with an input voltage range of 4.3V to 38V and delivers a fixed output voltage of 3.3V at up to 1.2A. The device utilizes a 10-lead DFN package with an exposed thermal pad. Key electrical specifications include a quiescent current of 2.2µA, a switching frequency adjustable from 200kHz to 2.2MHz, and operation across a temperature range of -40°C to +125°C.

Feature Summary

Synchronous buck topology for high efficiency
Ultra-low quiescent current consumption
Adjustable switching frequency capability
Integrated soft-start and power good flag

Applications

Automotive electronics systems
Industrial control equipment
Portable instrumentation devices

Procurement Notes

Verify the specific suffix #TRPBF confirms tape-and-reel packaging when ordering. Confirm the fixed 3.3V output variant matches the design requirement, as other voltage options exist within the LT3971 family. Ensure the DFN package footprint aligns with the PCB layout specifications before finalizing procurement.

Selection Notes

Select this component for designs requiring wide input voltage tolerance and low standby power. The fixed 3.3V output simplifies bill of materials compared to adjustable variants. Consider the 1.2A current limit and thermal performance in the 10-DFN package when determining heat dissipation requirements for the application environment.

Part Context

This part belongs to the LT3971 series of monolithic buck regulators designed for automotive and industrial use. It features an internally compensated current mode topology for stability. The device integrates a high-efficiency switch and boost diode, distinguishing it from non-synchronous alternatives in the broader power management portfolio.