LM2576

The LM2576 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving 3-A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, 12 V, 15 V, and an adjustable output version. Requiring a minimum number of external components, these regulators are simple to use and include fault protection and a fixed-frequency oscillator. The LM2576 series offers a high-efficiency replacement for popular three-terminal linear regulators. It substantially reduces the size of the heat sink, and in some cases no heat sink is required. A standard series of inductors optimized for use with the LM2576 are available from several different manufacturers. This feature greatly simplifies the design of switch-mode power supplies. Other features include a ±4% tolerance on output voltage within specified input voltages and output load conditions, and ±10% on the oscillator frequency. External shutdown is included, featuring 50-µA (typical) standby current. The output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault conditions.

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Dual USB Host/Hub Output with Constant Current Limit/Protection

“DUAL USB HOST/HUB OUTPUT WITH CONSTANT CURRENT LIMIT/PROTECTIONRajkumar Sharma 122 Views moderate Tested This project has 2 outputs that enable us to power up 2 USB devices simultaneously from an input supply of 12-30V DC. The idea of …

How to Build an Adjustable Switching Power Supply Using LM2576

“Switching power supplies are known for high efficiency. An adjustable voltage/current supply is an interesting tool, which can be used in many applications such as a Lithium-ion/Lead-acid/NiCD-NiMH battery charger or a standalone power supply. In this article …

DIY DC/DC Step-Down BUCK 3A

“Today we will learn how to make a buck converter using simple tools. we will make 5volt + 12volt Buck 3A If you understand the principle of the work you can make a buck converter with any voltage you want. Let …

Texas Instruments

Texas Instruments Inc. (TI) is an American technology company that designs and manufactures semiconductors, which it sells to electronics designers and manufacturers globally. Headquartered in Dallas, Texas, United States, TI is one of the top ten semiconductor companies worldwide, based …

DIY Buck Converter

“In this Instructables, I will show you How to step down DC voltage efficiently. for supplying power to Arduio or any other components required 5v or 3.3v. If you use LM7805 it having poor efficiency about 30%.It also …

1.2V to 35V DC-DC Converter

“1.2V to 35V Adjustable DC-DC Converter project has been design around TI’s LM2576-ADJ IC. Inputs supply 40 VDC. LM2576-ADJ is a monolithic integrated circuit that provides all the active functions for step down switching regulator …