LM2574MX-3.3/NOPB

$2.25

Description：IC REG BUCK 3.3V 500MA 14SOIC
Series：SIMPLE SWITCHER®
Mfr：Texas Instruments
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:3fef937270c7 Category: Voltage Regulators - DC DC Switching Regulators Brand: Texas Instruments

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Product introduction

LM2574MX-3.3/NOPB is listed in the Voltage Regulators - DC DC Switching Regulators range at ChipApex. The manufacturer field lists Texas Instruments. Its product description is IC REG BUCK 3.3V 500MA 14SOIC. Review the specifications below when checking this part for your BOM.

Voltage Regulators - DC DC Switching Regulators specifications for LM2574MX-3.3/NOPB

Description：IC REG BUCK 3.3V 500MA 14SOIC
Series：SIMPLE SWITCHER®
Mfr：Texas Instruments
Package：Tape & Reel (TR),Cut Tape (CT)
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Output Type：Fixed
Number of Outputs：1
Voltage - Input (Min)：4V
Voltage - Input (Max)：40V
Voltage - Output (Min/Fixed)：3.3V
Voltage - Output (Max)：-
Current - Output：500mA
Frequency - Switching：52kHz
Synchronous Rectifier：No
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：14-SOIC (0.295", 7.50mm Width)
Supplier Device Package：14-SOIC
Grade：-
Qualification：-

Voltage Regulators - DC DC Switching Regulators datasheet and documents for LM2574MX-3.3/NOPB

LM2574MX-3.3/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2574MX-3.3/NOPB is a Texas Instruments SIMPLE SWITCHER® step-down voltage regulator in a 14-pin SOIC package. It provides a fixed 3.3V output with a maximum current of 0.5A. The device operates from an input voltage range of 4V to 40V at a standard switching frequency of 52kHz. It features internal frequency compensation and a 5mA typical quiescent current, supporting operation temperatures from -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

Integrated power switch eliminates external component requirements for basic buck topology
Internal frequency compensation simplifies design and reduces passive component count
Fixed 3.3V output option removes need for external feedback resistor networks

Voltage Regulators - DC DC Switching Regulators Applications

Point-of-load regulation for digital logic circuits
Pre-regulation for downstream linear regulators
Battery-powered equipment requiring efficient voltage conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix 'NOPB' confirms lead-free and RoHS compliance status. Confirm the 'MX' designation matches the required SOIC-14 wide package dimensions. Ensure the specific '-3.3' variant is selected to guarantee the fixed 3.3V output level rather than adjustable versions.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part when a fixed 3.3V output is required within a 40V input limit. Choose over adjustable variants if external resistor tolerance and layout complexity are concerns. Consider thermal performance in the SOIC package for high ambient temperatures or continuous full-load operation.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM2574 family of SIMPLE SWITCHER controllers. It shares architectural similarities with the LM2596 series but offers lower switching frequencies for reduced EMI. The MX package variant provides surface-mount compatibility compared to through-hole DIP options in the same family.