LM2575S-3.3

$4.05

Description：IC REG BUCK 3.3V 1A TO263
Series：SIMPLE SWITCHER®
Mfr：Texas Instruments
Package：Tube

SKU:799f16391c55 Category: Voltage Regulators - DC DC Switching Regulators Brand: Texas Instruments

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Product introduction

LM2575S-3.3 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 1A TO263. Review the specifications below when checking this part for your BOM.

Voltage Regulators - DC DC Switching Regulators specifications for LM2575S-3.3

Description：IC REG BUCK 3.3V 1A TO263
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)：3.3V
Voltage - Output (Max)：-
Current - Output：1A
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 (DDPAK-5)
Grade：-
Qualification：-

Voltage Regulators - DC DC Switching Regulators datasheet and documents for LM2575S-3.3

LM2575S-3.3

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575S-3.3 is a SIMPLE SWITCHER® 1A Step-Down Voltage Regulator manufactured by Texas Instruments. It utilizes a Buck topology to provide a fixed 3.3V output with a maximum current of 1A. The device accepts an input voltage range from 4.75V to 40V. Key electrical parameters include a switching frequency of 150kHz and a static current of 10mA. It operates within a temperature range of -40°C to +125°C. The component is housed in a TO-263-5 package (D2PAK) for surface mount installation.

Voltage Regulators - DC DC Switching Regulators Feature Summary

Integrated monolithic switching regulator designed for high-efficiency step-down conversion
Fixed internal feedback network ensures precise 3.3V output regulation without external adjustment components
Built-in thermal shutdown and current limit protection mechanisms safeguard against overload conditions

Voltage Regulators - DC DC Switching Regulators Applications

Point-of-load regulation in distributed power supply architectures
Pre-regulation stage for linear post-regulators
Efficient buck conversion for battery-powered systems requiring stable 3.3V rails

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer origin, as National Semiconductor originally produced this part before being acquired by Texas Instruments. Ensure the specific suffix matches the required package type and lead configuration. Confirm RoHS compliance status and check for any obsolete or end-of-life notices associated with legacy inventory sources.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3V output is required at up to 1A with minimal external circuitry. The 150kHz switching frequency allows for smaller passive components compared to lower-frequency alternatives. Consider the TO-263-5 package for adequate thermal dissipation in space-constrained surface-mount designs.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2575 series of SIMPLE SWITCHER regulators, which are known for ease of use and robust performance. The 'S' suffix indicates the surface-mount TO-263 package variant. As a fixed-output version, it simplifies design time by eliminating the need for external feedback resistors typically required in adjustable regulator configurations.