LM2576T-12/LF03

$2.91

Description：IC REG BUCK 12V 3A TO220-5
Series：SIMPLE SWITCHER®
Mfr：Texas Instruments
Package：Tube

SKU:39808659cd86 Category: Voltage Regulators - DC DC Switching Regulators Brand: Texas Instruments

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Product introduction

LM2576T-12/LF03 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 12V 3A TO220-5. Review the specifications below when checking this part for your BOM.

Voltage Regulators - DC DC Switching Regulators specifications for LM2576T-12/LF03

Description：IC REG BUCK 12V 3A TO220-5
Series：SIMPLE SWITCHER®
Mfr：Texas Instruments
Package：Tube
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)：12V
Voltage - Output (Max)：-
Current - Output：3A
Frequency - Switching：52kHz
Synchronous Rectifier：No
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Through Hole
Package / Case：TO-220-5 Formed Leads
Supplier Device Package：TO-220-5
Grade：-
Qualification：-

Voltage Regulators - DC DC Switching Regulators datasheet and documents for LM2576T-12/LF03

LM2576T-12/LF03

Voltage Regulators - DC DC Switching Regulators Overview

The LM2576T-12/LF03 is a monolithic integrated circuit from the Texas Instruments SIMPLE SWITCHER series, functioning as a 3-A step-down voltage regulator. It provides a fixed 12-V output and operates with an input voltage range of 4 V to 40 V. The device utilizes a 52-kHz internal oscillator and requires only four external components for implementation. It features TTL-shutdown capability for low-power standby modes and includes built-in fault protection mechanisms.

Voltage Regulators - DC DC Switching Regulators Feature Summary

Provides high-efficiency step-down regulation capable of driving 3-A loads
Integrates a fixed-frequency internal oscillator for simplified design
Includes TTL-shutdown functionality to enable low-power standby operation

Voltage Regulators - DC DC Switching Regulators Applications

Motor drives
Merchant network and server PSU
Appliances
Test and measurement equipment

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix LF03 against official datasheets to confirm lead-free status and RoHS compliance details. Ensure the TO-220-5 package variant matches the required thermal and mechanical constraints for the target application.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 12-V output is required within a 40-V input range. Consider the 52-kHz switching frequency for inductor sizing. Verify that the 3-A current rating meets peak load demands while accounting for thermal dissipation in the TO-220 package.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2576 series of buck converters, designed to replace traditional linear regulators for improved efficiency. The 'T' indicates a through-hole TO-220 package, while '12' specifies the fixed 12-V output voltage. The 'LF03' suffix typically denotes lead-free construction and specific environmental compliance.