LM2576WT: How Many Applications Do You Know?

The component LM2576WT is under the electronic components catalogue of LM2576 series LM2576 which provide all the active functions for a step-down (buck) switching regulator. The LM2576 series offers a high efficiency replacement for popular three-terminal adjustable linear regulators. It substantially reduces the size of the heat sink, and in many cases no heat sink is required. A standard series of inductors available from several different manufacturers are ideal for use with the LM2576 series. This feature greatly simplifies the design of switch-mode power supplies.

The part LM2576WT has four different versions including 3.3V, 5V, 12V, and adjustable output versions. And, furthermore, it also has a list of features such as Low power standby mode I Q typically < 200µA, 80% efficiency (adjustable version typically > 80%), ues readily available standard inductors, thermal shutdown and current limit protection, etc that determine a variety of applications of such series listed below。

Applications:

• Simple high-efficiency step-down (buck) regulator

• Efficient pre-regulator for linear regulators

• On-card switching regulators

• Positive to negative converter (inverting Buck-Boost)

• Isolated Flyback Converter using minimum number of

  external components

• Negative Boost Converter

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