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National LM2576 Buck Regulator Datasheet and Basic Applicati

2016-10-10 03:29  
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The LM2576s are Buck Regulators which is rated for 3A of continuous load current and developed as Simple SwitcherThe basic LM2576 Buck regulator application circuitproduct family. These devices are available in fixed output voltages of 3.3V, 5V, 12V, 15V, and an adjustable output version. The basic Buck regulator application circuit is shown in the following picture.

LM2576 regulators are used to be applied in applications such as On-card switching regulators, Simple high-efficiency step-down (buck) regulator, pre-regulator for linear regulators and Buck-Boost Converter. This device features adjustable version output voltage range (57V for HV version), Requires only 4 external components, Guaranteed 3A output current, Wide input voltage range (40-60 V) and etc.

In the LM2576 datasheet you will find Test Circuit and Layout Guidelines, LM2576 Series Buck Regulator Design Procedure, Application Hints (Input Capacitors, Inductor Selection and Ripple Current, Output Capacitor, Catch Diode, etc) and Additional Applications (Inverting Regulator, Undervoltage Lockout, Negative Boost Regulator, and Adjustable output Low Ripple Power Supply).

Read completely aboutSimple Switcher? 3A Step-Down Voltage Regulatorin the LM2576 datasheet (source: national.com).