FP3K3K3003MR2XA

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The FP3K3K3003MR2XA is an integrated circuit (IC) that is designed and manufactured by Fairchild Semiconductor. It is a multi-function power IC that is mainly used for power supplies and other power-related systems. This IC is designed to replace multiple discrete power components, such as controllers, switches, resistors, diodes, and capacitors. It is a reliable and cost-effective power solution for many applications.

The FP3K3K3003MR2XA is a 3A buck converter with integrated current sense and cycle-by-cycle current limit. It is housed in a TO-252-3L package, with an operating temperature range of -40C to 150C. It has a wide input voltage range of 4.5V to 18V, and an output voltage range of 0.9V to 18V. The circuit also features an adjustable switching frequency up to 400kHz, and integrated high and low side MOSFETs with 600mΩ (typical) RDS(on)).

FP3K3K3003MR2XA Application Fields:

The FP3K3K3003MR2XA is a wide and versatile buck converter that can be used for a variety of different applications. It is an ideal choice for industrial and consumer electronics, automotive, communication, and medical equipment. It is also commonly used in direct AC-DC and DC-DC conversion applications, such as power adapters, notebook computers, server power supplies, LED drivers, and power converters. The integrated current sense and cycle-by-cycle current limit ensures excellent performance and safety for these applications.

FP3K3K3003MR2XA Working Principle:

The FP3K3K3003MR2XA is a synchronous buck inductor-based converter that uses an integrated MOSFET to convert a voltage from a higher voltage source to a lower voltage level. The converter works by using an inductor to store energy and limit the current flow. When the switch is closed, the source voltage is connected to the inductor, the current starts to build up and energy is stored in the inductor. When the switch opens, the inductor will release the stored energy to the output load, and the current will continue to flow. This process will be repeated at a predetermined switching frequency. During this process, the output voltage will be regulated by a feedback loop that compares the output voltage to a reference voltage.

The FP3K3K3003MR2XA also includes an integrated current sense and cycle-by-cycle current limit circuit. The current-sense circuit will sense the current through the inductor, and the limit will limit the current to a safe level in the event of an over-current situation. This ensures reliable operation and prevents damage to the circuit. It also has a thermal protection circuit that will shut down the converter in the event of a fault or over temperature situation.

The FP3K3K3003MR2XA is a versatile, reliable, and cost-effective power solution for a variety of applications. Its wide input voltage range, adjustable switching frequency, and integrated current sense and limit circuits make it an ideal choice for many power-related systems.

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