LT3990EMSE-3.3#PBF

$7.58

Description：IC REG BUCK 3.3V 350MA 16MSOP
Series：-
Mfr：Analog Devices Inc.
Package：Tube

SKU:fc39684e50fa Category: Voltage Regulators - DC DC Switching Regulators Brand: Analog Devices Inc.

Consult the customer manager about the wholesale price.

consultation hotline：86-132-6715-2157

email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.

Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.

Product introduction

Product Detailed Parameters

Description：IC REG BUCK 3.3V 350MA 16MSOP
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)：62V
Voltage - Output (Min/Fixed)：3.3V
Voltage - Output (Max)：-
Current - Output：350mA
Frequency - Switching：210kHz ~ 2.3MHz
Synchronous Rectifier：No
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：16-TFSOP (0.118", 3.00mm Width) Exposed Pad
Supplier Device Package：16-MSOP-EP

Download product information

LT3990EMSE-3.3#PBF

Overview

The LT3990EMSE-3.3#PBF is a fixed-output synchronous step-down switching regulator manufactured by Analog Devices Inc. It provides a stable 3.3V output with a maximum current of 350mA. The device accepts an input voltage range from 4.2V to 62V and operates with a programmable switching frequency between 210kHz and 2.3MHz. It features low quiescent current consumption of 2.5µA and includes internal power switches, eliminating the need for external diodes. The component is housed in a 16-lead MSOP package with an exposed thermal pad.

Feature Summary

Integrated synchronous rectification topology eliminates the requirement for external Schottky diodes.
Programmable switching frequency allows optimization for efficiency or external size constraints.
Low quiescent current operation supports extended battery life in portable applications.

Applications

Industrial control systems requiring wide input voltage tolerance
Portable instrumentation powered by single-cell lithium batteries
Embedded computing modules needing efficient 3.3V regulation

Procurement Notes

Verify the specific suffix '#PBF' indicates lead-free RoHS compliance when ordering. Confirm that the fixed 3.3V output variant matches the design requirements, as other variants exist within the LT3990 family. Ensure the 16-MSOP package footprint aligns with the PCB layout specifications before finalizing procurement.

Selection Notes

Select this part when a fixed 3.3V output is required without external feedback resistor networks. It is suitable for designs prioritizing board space savings through integrated synchronous rectification. Consider the 62V maximum input rating for applications involving automotive or industrial bus voltages.

Part Context

This component belongs to the LT3990 family of high-voltage buck regulators. Unlike adjustable versions, the EMSE-3.3 variant has the feedback network internally set for a precise 3.3V output. It shares the same core architecture and pinout with other LT3990 models but offers simplified implementation for standard voltage rails.