FAN1589MCX

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Applications:	Controller, Intel VRM8.5
Voltage - Input:	3.3 V ~ 7 V
Number of Outputs:	1
Voltage - Output:	1.2V
Operating Temperature:	0°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	TO-263-3, D²Pak (2 Leads + Tab), TO-263AB
Supplier Device Package:	TO-263-3
Base Part Number:	FAN1589

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FAN1589MCX: Application Field and Working Principle

The FAN1589MCX is a special purpose, voltage regulator integrated circuit (IC) manufactured by Fairchild Semiconductor. It is part of the FAN1589 series of voltage regulators, specialized integrated circuits designed to provide voltage regulation within an electrical system. The FAN1589MCX is designed specifically to be integrated into a motherboard or other computing device that requires a highly efficient voltage regulation system.The FAN1589MCX is based on a peak current mode, step-down, switch-mode converter topology. This topology is integrated into a single IC package, allowing for the implementation of a voltage regulation system into a motherboard without having to resort to additional components and components complexity. The FAN1589MCX uses a synchronous, rectified topology that eliminates any need for an output inductor, significantly reducing the cost of implementation. A key strength of the FAN1589MCX is its efficient performance at a low temperature range. It is capable of regulating voltage with a light load to within a margin of 0.3V, and is able to maintain a tight regulation loop across a range of temperature as low as -40°C and as high as 125°C. This makes the FAN1589MCX well-suited for applications in relatively high ambient temperatures, such as in embedded systems or datacenters, where the external environment may be ranging from cold to hot and back.The FAN1589MCX also offers a wide variety of other features that can be useful in the implementation of a voltage regulation system. These include an adjustable operating frequency, adjustable soft start (which prevents overshoot when the device is first powered on), adjustable maximum duty cycle limit, two simple, selectable current limit levels, and an internal output voltage shunt. An external clock option is also available if the device needs to be synchronized with a higher speed clock. The FAN1589MCX is designed to be paired with a single power supply, operating at a voltage of between 3.0V and 3.6V. It supports up to 6.5A of maximum output current and is capable of delivering output voltages ranging from 0.8V up to 6.0V. Additionally, it features an adjustable switching frequency between 150 kHz and 1.2 MHz that can be used to optimize efficiency. The FAN1589MCX is a cost-effective solution for voltage regulation in applications ranging from embedded systems, to automotive, to consumer electronics. Its high-efficiency operating range, enhanced features, and optimized temperature range make it an ideal option for most motherboard and computing applications, where tight voltage regulation is a must.

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