LT3971EMSE-3.3#PBF

$7.88

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

SKU:94daabc5586e 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 10MSOP
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-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
Supplier Device Package：10-MSOP-EP

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LT3971EMSE-3.3#PBF

Overview

The LT3971EMSE-3.3#PBF is a fixed-output buck switching regulator manufactured by Analog Devices Inc. It provides a stable 3.3V output at up to 1.2A with an input voltage range of 4.3V to 38V. The device operates at a switch frequency between 200kHz and 2MHz, consuming only 1.7µA of operating supply current and 2.8µA quiescent current during regulation. It features a 10-TFSOP/MSOP package with an exposed pad for thermal management.

Feature Summary

Integrates a high-efficiency power switch and control logic in a compact surface-mount package
Supports adjustable switching frequencies from 200kHz to 2MHz for optimized design flexibility
Includes soft-start functionality to limit inrush current during startup

Applications

Industrial point-of-load regulation
Distributed power systems
Battery-powered equipment requiring low standby current

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and RoHS adherence. Confirm the MSOP-10 package variant matches your PCB footprint requirements. Check for any recent PCN notifications regarding epoxy changes or marking updates before finalizing procurement orders.

Selection Notes

Select this component when a fixed 3.3V rail is required within a 38V input window. The 1.2A output capability suits moderate load applications. Ensure the chosen switching frequency aligns with external inductor selection and EMI constraints. Verify thermal performance given the exposed pad requirement for heat dissipation.

Part Context

This part belongs to the LT3971 family of monolithic buck regulators designed for wide input voltage ranges. It shares architectural similarities with the LT3970 and LT3973 series but offers specific current ratings and package options tailored for space-constrained designs requiring efficient step-down conversion.