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1-2. Benefits of using load switch ICs

One of the major advantages of load switch ICs is that they incorporate various functions, including inrush current limiting, auto discharge, overcurrent protection, thermal shutdown, undervoltage lockout, and reverse-current blocking. Therefore, load switch ICs help reduce the board area and improve system stability.
Figure 1 shows an example of a simple load switch composed of discrete devices. This circuit consists of a MOS pass transistor, a MOSFET gate driver, resistors, capacitors, and input and output smoothing capacitors. Figure 2 shows an application circuit for a load switch IC. In contrast to a load switch circuit composed of discrete devices, it consists of only three components: a load switch IC plus input and output smoothing capacitors.

Figure 1 Example of a load switch composed of discrete components
Figure 1 Example of a load switch composed of discrete components
Figure 2 Example of an application for a load switch IC
Figure 2 Example of an application for a load switch IC

Chapter1 Introduction to Load Switch ICs

1-1. What is a load switch IC?

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