LM2575T-12/LB03

Description：IC REG BUCK 12V 1A TO220-5
Series：SIMPLE SWITCHER®
Mfr：Texas Instruments
Package：Tube

SKU:f34efdb3cfcf Category: Voltage Regulators - DC DC Switching Regulators Brand: Texas Instruments

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Product introduction

LM2575T-12/LB03 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 1A TO220-5. Review the specifications below when checking this part for your BOM.

Voltage Regulators - DC DC Switching Regulators specifications for LM2575T-12/LB03

Description：IC REG BUCK 12V 1A 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：1A
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 LM2575T-12/LB03

LM2575T-12/LB03

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575T-12/LB03 is a SIMPLE SWITCHER® 1A step-down voltage regulator from Texas Instruments, housed in a TO-220-5 through-hole package. It provides a fixed 12V output with a maximum input voltage of 40V and operates within a junction temperature range of -40°C to +125°C. The device features an internal oscillator with a typical switching frequency of 52kHz, ensuring efficient power conversion for standard applications.

Voltage Regulators - DC DC Switching Regulators Feature Summary

Integrates a fixed-frequency oscillator for simplified external component requirements
Includes built-in thermal shutdown and current limit protection mechanisms
Offers high efficiency as a direct replacement for traditional linear regulators

Voltage Regulators - DC DC Switching Regulators Applications

Distributed power supply systems requiring regulated buck conversion
Pre-regulator stages for downstream switching regulators
Efficient linear regulator replacements in thermal-constrained designs

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the LB03 suffix against official Texas Instruments documentation to confirm specific tape-and-reel or tube packaging specifications. Ensure the part number matches the exact electrical characteristics required for your design, as suffixes may indicate variations in environmental compliance or manufacturing origin that do not alter functional performance.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 12V output is required from an input voltage up to 40V. It is suitable for designs needing 1A continuous load capability with minimal external circuitry. Consider the TO-220-5 package for through-hole mounting and adequate heat dissipation without additional heatsinks in many scenarios.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2575 series of monolithic integrated circuits designed for buck converter applications. The series is known for reducing design complexity by integrating all active functions needed for step-down regulation, including the control circuitry, oscillator, and protection features, into a single compact package.