BOJACK IRLB8721 MOSFET Transistors IRLB8721PBF 30 V 62 A N-Channel Power MOSFET TO-220 (Pack of 10 Pcs)

Product Information

R DS(on) : Static Drain-to-Source On-Resistance is the minimum resistance of the MOSFET when it is driven to the fully ON state known as the Saturation Region. The key to look for here is that R DS(on) may be specified at one or a couple of V GS voltages. LED strips are just amazing, and there are a wide variety of LED strips to chose from. Do you know what is the best LED strip for your project? Here we explain the main differences between several types of LED strips and their features. If there are two voltages listed, the highest voltage will be the voltage at which the device is fully saturated and show the lowest resistance, often 10V. The lower voltage is often around 4.5V and shows the resistance if you were to drive it directly off of 5V logic. Having this specified implies that the device is at least partially 5V logic compatible even if it isn’t being driven to full saturation. According to Fig. 12 of the datasheet, the Rdson degrades significantly when Vgs=5V instead of 10V. For Tj=125˚C (worst case), Rdson=16mΩ. So the power dissipated will be 0.016*(20A)

There are libraries that make it really easy to control the strip and make all sorts of crazy effects.

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Power MOSFETs are most often used a switches where they are turned fully ON or OFF to control a load such as a motor or high power LEDs. They are ideally suited for this because when the MOSFET is turned fully ON (Saturation Region), it has a very low resistance and can pass a lot of current without much power being dissipated in the device similar to a mechanical switch. When they are turned OFF (Cut-Off Region), they act as an open circuit much like a mechanical switch would when it is off. Finding the right power supply for your strip is important to keep your strip with an appropriate brightness and to make it work correctly. To find the appropriate power supply you need to know: I'm quite new to working with arduino and I'm *really* fresh to using the ESP32 and have just discovered that I'm not able to use my current mosfets (IRF520/540) from the 3.3V pin (now obvious to me, as they activate at 4V and 10V (I think) respectively).

Most regulator chips are thermally protected and they'll shut-down safely without burning-up. Then, they'll work again after they cool down. (Transistors & MOSFETs will just permanently die.) frequencies you need to ensure shorter RC time constant in the gate-drive circuit. This usually means Looking at the example spec sheet below, this is telling us that to drive the MOSFET to full saturation requires a V GS voltage of 10V where max resistance is 8.7mOhm. If we were to drive it instead at 4.5V directly off of 5V logic, the resistance basically is twice as high, but is still only about 16mOhm. When it comes to LED strips, the main difference is between analog and digital LED strips. Analog and digital LED strips work differently and produce different results. So, whether you need an analog or a digital LED strip will depend on the project you want to build.

Recommendations

A well-designed switching regulator probably won't need a heatsink. A linear regulator will probably overheat even with a heatsink. The other parameter you need to consider is the total gate capacitance as that affects how fast PWM can be used (depending on the gate drive current).