LT3990EMSE#PBF

$7.58

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

SKU:a26752b0afe8 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 350MA 16MSOP
Series：-
Mfr：Analog Devices Inc.
Package：Tube
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Output Type：Adjustable
Number of Outputs：1
Voltage - Input (Min)：4.2V
Voltage - Input (Max)：62V
Voltage - Output (Min/Fixed)：1.21V
Voltage - Output (Max)：25V
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

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LT3990EMSE#PBF

Overview

The LT3990EMSE#PBF is a monolithic buck switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 4.2V to 62V and provides a single adjustable output from 1.21V to 25V. The device delivers up to 350mA of output current with a switchable frequency between 210kHz and 2.3MHz. It features low quiescent current consumption, synchronous rectification, and thermal foldback protection. Packaged in a 16-lead MSOP with exposed pad for surface mount installation, it supports operation temperatures from -40°C to 125°C.

Feature Summary

Adjustable switching frequency allows optimization for efficiency or component size
Synchronous rectification improves conversion efficiency across load ranges
Thermal foldback protection limits output current during high temperature conditions
Wide input voltage range accommodates various power supply sources

Applications

Industrial control systems requiring wide input voltage tolerance
Battery-powered equipment needing low standby current consumption
Embedded computing modules utilizing adjustable voltage rails
Automotive electronics operating within specified thermal limits

Procurement Notes

Verify the specific suffix #PBF indicates tube packaging rather than tape and reel when ordering. Confirm the exact output voltage configuration matches design requirements as this variant is adjustable. Check lead times due to potential supply chain variations. Ensure ESD handling procedures are followed during storage and assembly. Validate that the 16-MSOP package dimensions fit the intended PCB footprint.

Selection Notes

Choose this component when a wide input voltage range up to 62V is required alongside low quiescent current. Select for designs needing adjustable output voltages without fixed internal references. Consider for applications where thermal management can utilize the exposed pad for heat dissipation. Evaluate if the 350mA current limit meets peak load demands. Compare against higher current alternatives if system loads exceed specified ratings.

Part Context

This part belongs to the LT3990 family of high voltage buck regulators designed for space-constrained applications. It integrates power switches and control circuitry into a compact package. The series targets industrial and automotive markets requiring reliable DC-DC conversion. Competing products often lack the same combination of wide input range and low static current.