LT3991EMSE-3.3#PBF

$8.29

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

SKU:3df822b15054 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)：55V
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
Grade：-
Qualification：-

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LT3991EMSE-3.3#PBF

Overview

The LT3991EMSE-3.3#PBF is a monolithic step-down DC/DC switching regulator featuring the LT3991 controller, manufactured by Analog Devices Inc. It operates with an input voltage range of 4V to 55V and provides a fixed output voltage of 3.3V at up to 1.2A. The device supports adjustable switching frequencies up to 2MHz and exhibits a quiescent current of 2.8uA. Designed for surface mount applications in a 10-MSOP package, it includes shutdown functionality and operates within a temperature range of -40°C to +125°C.

Feature Summary

Monolithic buck switching regulator architecture
Adjustable switching frequency capability
Integrated shutdown control function

Applications

Industrial power supply systems
Automotive electronics
Distributed power architectures

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status via official documentation. Ensure storage conditions adhere to specified limits to maintain performance integrity. Validate package markings against official datasheet specifications prior to integration.

Selection Notes

Select this component when a wide input voltage range up to 55V is required alongside high efficiency. The fixed 3.3V output simplifies design for standard logic levels. Consider the 2.8uA quiescent current for battery-operated applications requiring low standby consumption. Evaluate thermal management requirements based on the 10-MSOP package constraints.

Part Context

This part belongs to the LT3991 series of high-voltage step-down regulators. It shares architectural similarities with other members like the LT3991IMSE-5#PBF but differs in fixed output voltage configuration. The series targets applications demanding robust performance across wide input ranges while maintaining compact form factors.