FAN3223TMX-F085

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Although FAN3223TMX-F085 is categorized as PMIC – Gate Drivers, its application field and working principle is barely known by most. The FAN3223TMX-F085 is part of the FAN3220A Series, which offers a simple, integrated and effective solution for fast switching in common 2.5V/3.3V applications.

The FAN3223TMX-F085 can drive single-ended circuitry with a power dissipation of 0.7W. It comes with 3 separate high-performance parts, each of which pair up to the output logic states of the control signal. It features a fast Fall Time (tF) of approximately 65ns and a fast Rise Time (tR) of 70ns, allowing for quick operation and response times that are faster than most other devices. It has a high Efficiency Power MOSFET driver, which has a wider Drop out Voltage range and an improved bus voltage response. The FAN3223TMX-F085 also offers an integrated Driver Strobe Circuit which enables simultaneous switching of both the Low side and High side outputs.

The FAN3223TMX-F085 is extremely versatile thanks to the ultra-low 1.9V to 3.6V input voltage range and powers the logic core of the microcontroller or application processor. It features an undervoltage lockout (UVLO) feature to protect against supply voltage glitches, as well as settling time and dead time protection to ensure reliable, safe and clean switching of the power MOSFETs. Its integrated high-side MOSFET gate structure can be used for driving an output stage with a small number of turns-on cycles, allowing for improved efficiency and reliability. Moreover, the FAN3223TMX-F085 is capable of driving up to two power MOSFETs, allowing for higher currents to get through them.

The FAN3223TMX-F085 has long been a favorite amongst engineers, especially due to its robust design, low-power consumption, and extremely small footprint. Its user-selectable Automatic Input Current Limiting (AICL) feature helps reduce power dissipation and maintain safe operation levels. Finally, its ultra-low voltage input capability makes it suitable for battery-powered applications, or any application that is sensitive to power supply drops and other power events.

The working principle of the FAN3223TMX-F085 is quite simple. When the enable pin of the FAN3223TMX-F085 is pulled high, it sends out an enable signal, which is used to activate the power MOSFETs. The enable signal is then passed through the circuit to the output driver, which uses the enable signal to determine the level of current needed to switch the MOSFETs from off to on state. Once the MOSFETs are switched on, the FAN3223TMX-F085 will regulate the output voltage and current according to the set values provided by the user.

The FAN3223TMX-F085 is primarily used in the fields of graphics cards, digital television and communications infrastructure, automotive electronics, embedded computing applications, low powered and portable devices, and other power supplies requiring fast and efficient switching and protection. It is particularly useful in applications that require high efficiency, reliability and flexibility. By providing an efficient, reliable and cost-effective solution, it makes the design of power supplies and other switching applications faster, safer and easier.

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