LM2576-3.3WU-TR

$1.52

Description：IC REG BUCK 3.3V 3A TO263-5
Series：-
Mfr：Microchip Technology
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:0b1f3a20b6e7 Category: Voltage Regulators - DC DC Switching Regulators Brand: Microchip Technology

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Product introduction

LM2576-3.3WU-TR 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 3.3V 3A TO263-5. Review the specifications below when checking this part for your BOM.

Voltage Regulators - DC DC Switching Regulators specifications for LM2576-3.3WU-TR

Description：IC REG BUCK 3.3V 3A TO263-5
Series：-
Mfr：Microchip Technology
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：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 LM2576-3.3WU-TR

LM2576-3.3WU-TR

Voltage Regulators - DC DC Switching Regulators Overview

The LM2576-3.3WU-TR is a monolithic integrated circuit step-down switching regulator manufactured by Microchip Technology, designed for driving loads up to 3A with excellent line and load regulation. It operates from an input voltage range of 4V to 40V and provides a fixed 3.3V output. The device incorporates a 52kHz fixed-frequency internal oscillator and requires minimal external components. It features cycle-by-cycle current limiting and thermal shutdown protection. The component is housed in a surface-mount SOIC-8 package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

Integrated 52kHz fixed-frequency oscillator simplifies design
Built-in cycle-by-cycle current limiting and thermal shutdown
High-efficiency replacement for linear regulators

Voltage Regulators - DC DC Switching Regulators Applications

Simple efficient step-down (buck) regulators
Pre-regulators for linear regulators
On-card switching regulators

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'WU-TR' against official Microchip documentation to confirm tape-and-reel packaging and exact temperature grade. Ensure compatibility with existing PCB footprints for the SOIC-8 package. Cross-reference datasheet revisions to confirm pinout consistency with legacy National Semiconductor versions.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part for applications requiring a robust 3A buck converter with a wide input voltage range. The fixed 3.3V output eliminates the need for external feedback resistors found in adjustable variants. Consider the 52kHz switching frequency when selecting inductors, as it necessitates larger passive components compared to modern high-frequency alternatives.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM2576 series of SIMPLE SWITCHER power converters. Originally developed by National Semiconductor, the product line is now maintained by Microchip Technology. The series is widely recognized for its simplicity and reliability in medium-power DC-DC conversion applications.