FAN1581DX

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The FAN1581DX is a three-terminal, low- dropout voltage regulator that is commonly used for applications such as supplying external voltage reference, mobile phone power management and automotive power system applications. It offers low-frequency operation, low-voltage accuracy and a wide input voltage range. It is a member of the FAN Series of linear regulators from Fairchild Semiconductor.

The FAN1581DX is a low drop-out device that allows a very small output voltage to be maintained with a very small input-output differential. This feature is especially beneficial for applications that need to maintain very sensitive current supply. It provides a wide input voltage range of 1.5V to 24V, making it suitable for use in a variety of automotive and industrial applications. It also features a 0.5% voltage accuracy, making it better suited for precision applications.

The FAN1581DX operates by controlling the current through an internal PMOS device. As the output voltage increases, the PMOS device reduces the supply voltage, causing the current to drop. This allows the regulator to provide a stable output voltage over a wide range of load currents and operational temperatures. This makes it well suited for applications such as mobile phone power management and laptop power supplies.

The FAN1581DX also offers a wide range of protection features, including over-temperature protection, diode emulation mode, under-voltage lockout and current limit. These features make it suitable for applications where high levels of output current might be required. For example, a laptop charger could be safely protected against under-voltage and over-temperature conditions.

The FAN1581DX can also be used to supply a voltage reference for precision analog circuits. It provides a 0.5% accuracy output voltage, making it suitable for low-noise, low-power (LNLP) analog circuits. This makes it particularly well suited for use in applications such as data converters, instrumentation and audio amplifiers.

The FAN1581DX is a low cost, three-terminal, low-dropout linear regulator that offers high accuracy and low-dropout performance. It has a wide input voltage range, high output accuracy and many advanced protection features, making it suitable for many automotive and industrial applications, as well as precision analog circuits.

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