Does the load switch store energy

What is the function of a load switch?

A load switch automatically cuts off a device from its power supply to protect it from damage during abnormal power situations, such as a power surge, an electrical transient, or insertion/removal of the battery.

What does a load switch insert into?

The load switch is an insertion into the power path between the source and load. Therefore, it is important to understand what this insertion can impact the device’s performance. The load switch is a device used to turn the power rail on and off when it is needed.

What happens if you add a load switch to a power path?

Adding a load switch to the power path causes a voltage drop (Vdrop = VIN – VOUT = RON x ILOAD). Additionally, the load switch consumes a quiescent current (IQ) when turned on but there is no load on the output.

What is the voltage drop of a load switch?

The load switch is an insertion into the power path between the source and load, which can impact the device’s performance. This insertion causes a voltage drop, which is an important factor to consider when using load switches.

How long does a load switch's lifetime last?

The lifetime of the load switch is dependent on the junction temperature. Three of the most important thermal specifications are the maximum operating junction temperature, TJ,max, ambient air temperature, TA, and the thermal resistance from the junction to the ambient air, θJA.

How does a load switch protect a device?

The load switch automatically cuts off the device from the power supply to protect it from damage during abnormal power situations, such as a power surge, an electrical transient or an insertion or removal of the battery.