LM2576WU

$1.52

Description：IC REG BUCK ADJ 3A TO263-5
Series：-
Mfr：Microchip Technology
Package：Tube

SKU:a2f458bac25f Category: Voltage Regulators - DC DC Switching Regulators Brand: Microchip Technology

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Product introduction

LM2576WU is listed in the Voltage Regulators - DC DC Switching Regulators range at ChipApex. The manufacturer field lists Microchip Technology. Its product description is IC REG BUCK ADJ 3A TO263-5. Review the specifications below when checking this part for your BOM.

Voltage Regulators - DC DC Switching Regulators specifications for LM2576WU

Description：IC REG BUCK ADJ 3A TO263-5
Series：-
Mfr：Microchip Technology
Package：Tube
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Output Type：Adjustable
Number of Outputs：1
Voltage - Input (Min)：4V
Voltage - Input (Max)：40V
Voltage - Output (Min/Fixed)：1.23V
Voltage - Output (Max)：37V
Current - Output：3A
Frequency - Switching：52kHz
Synchronous Rectifier：No
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
Supplier Device Package：TO-263-5
Grade：-
Qualification：-

Voltage Regulators - DC DC Switching Regulators datasheet and documents for LM2576WU

LM2576WU

Voltage Regulators - DC DC Switching Regulators Overview

The LM2576WU is a monolithic integrated circuit step-down (buck) switching regulator manufactured by Microchip Technology. It provides all active functions for a high-efficiency DC-DC converter capable of driving a 1 A load with excellent line and load regulation. The device operates from an input voltage range of 4 V to 40 V and features a fixed internal oscillator frequency of 52 kHz. It is housed in a TO-263-5 surface-mount package and supports adjustable output voltages ranging from 1.23 V to 37 V.

Voltage Regulators - DC DC Switching Regulators Feature Summary

Integrated 52 kHz fixed-frequency internal oscillator simplifies external component requirements
Includes external shutdown capability with low standby current consumption
Built-in cycle-by-cycle current limiting and thermal shutdown protection

Voltage Regulators - DC DC Switching Regulators Applications

Efficient replacement for three-terminal linear regulators
Directly convertible circuits from existing linear designs
On-card regulation for distributed power systems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer designation on the datasheet, as the LM2576 series has historical origins with National Semiconductor and Texas Instruments. Confirm that the specific part number corresponds to the Microchip Technology manufacturing source. Ensure the TO-263-5 package type matches the required surface-mount footprint for the target PCB design.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a 1 A output current is sufficient, distinguishing it from the 3 A LM2576 variants. The TO-263-5 package offers a balance between thermal performance and surface-mount convenience. Consider the 52 kHz switching frequency, which requires larger inductors compared to modern high-frequency regulators but allows for cost-effective standard components.

Voltage Regulators - DC DC Switching Regulators Part Context

This regulator belongs to the LM2575 family, which shares the same control architecture as the higher-current LM2576 series but is rated for lower continuous output current. The 'WU' suffix indicates the specific surface-mount TO-263-5 packaging variant within the broader product line.