FAN2514S26X

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The FAN2514S26X is a type of an integrated circuit from Fairchild Semiconductor with voltage- regulating capabilities. It is classified as a linear voltage regulator, and more specifically an on-chip PMIC (power management integrated circuit). It is used to ensure that a regulated output voltage is maintained, despite varying input voltage conditions. The steady voltage output is essential for stable and reliable performance of electronic circuits, thus making the FAN2514S26X a popular choice among electronic circuits.

Overview

The FAN2514S26X is a linear regulator with a fixed output voltage of 26V. It has an operating temperature range between 0°C and 70°C, and a maximum output current of 200mA. The chip also features standard protection features, such as output short-circuit protection, input overvoltage protection, output overvoltage protection, and thermal shutdown.

The linear regulator contains two values of voltage drops: one for the regulator and the other for the external series N-Channel MOSFET. The regulator has an on-chip differential amplifier, power MOSFET, current limit comparator, and a slew rate limiter. The device is packaged in a SO-8 surface mount package, and requires two external components: a resistor and a capacitor.

Working of FAN2514S26X

The basic circuit of the FAN2514S26X consists of three main components: the input voltage, the series resistor, and the output voltage. When the input voltage is applied to the series resistor, a voltage drop is developed across its ends. The voltage drop across the series resistor is then compared to the reference voltage developed within the regulator. When the voltage across the resistor is higher than the reference voltage, the comparator within the regulator outputs a logic high enable signal to the gate of the power MOSFET. The power MOSFET then turns on and the current is allowed to flow through the resistor to the output voltage.

When the output voltage is reached, the differential amplifier senses the voltage difference between the output and the reference voltage. The difference between them is the voltage drop across the series resistor. If this voltage drop exceeds a certain amount, the current-limit comparator will activate and reduce the gate voltage of the power MOSFET, thus reducing the current flow. This action is called the current-limit protection (CLP) and protects against current surges.

On the other hand, if the voltage difference between the output voltage and the reference voltage is low, the differential amplifier will activate the CLP and reduce the current flow. This is how the output voltage is regulated.

Application Fields of FAN2514S26X

The FAN2514S26X has a wide range of applications in various fields, such as:

• Industrial control systems
• Computer/server systems
• Memory and touch devices
• Communications devices
• Networking and wireless infrastructure
• PC add-on cards
• Consumer devices and appliances
• Power-supply solutions

The device can be used to maintain a regulated output voltage, despite varying input voltage conditions. It is also employed to ensure reliable performance of electronic circuits under harsh environmental conditions.

Conclusion

The FAN2514S26X is a linear on-chip PMIC offering a fixed output voltage of 26V, a maximum output current of 200mA, and a temperature range of 0°C to 70°C. It has various protection features and requires two external components: a resistor and a capacitor. The device is widely used to maintain a stable output voltage in a variety of applications and is employed to ensure reliable performance of electronic circuits under harsh environmental conditions.

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