FAN2513S33X

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The FAN2513S33X is a three channel Low Drop Out (LDO) Linear Voltage Regulator manufactured by Fairchild Semiconductor. The device is designed to operate from a single input supply, typically from 2.7V up to 6.0V and provide three outputs of 1.8V, 2.8V and 3.3V. The output current of each channel can be up to 500mA. The FAN2513S33X is capable of regulating two output voltages without any external components, while the third voltage is adjustable by using an external resistor divider. It can be used in many different applications, such as cellular phones and portable radios, which require up to three separate voltage supplies from a high-power battery. In addition to its linear output, the device also offers over-current, short-circuit, and thermal protection.

The FAN2513S33X is a monolithic integrated circuit composed of several components: two input pins, two sets of three-channel enable pins, three sets of triple logic enable pins, three sets of output enable pins, and three sets of output voltage adjustment pins. The two input pins enable the FAN2513S33X to work with a single input power supply. It has an operating temperature range of -40°C to +125°C, and sleep current is typically limited to 0.15 µA. The device is capable of up to 500mA max output current, and can provide output voltage accuracy of ±8%.

The FAN2513S33X provides a unique way of regulating voltage for applications where multiple outputs are needed. Three independent output regulators are integrated into the device, with each regulator having its own set of enable and output voltage adjustment pins. By setting the enable pins to the HIGH (1) level, the corresponding output voltage regulator is activated, providing a regulated output voltage. The output voltage can be adjusted by connecting an external resistor divider between the OUTTV1 and OUTTV2 pins. For the three regulators that are enabled, the voltage is regulated according to the output voltage adjustment pin.

The FAN2513S33X employs a PFM (Pulse-Frequency Modulated) compound topology with a pulse width modulated internal reference. This type of topology makes the output voltage ripple resistant and provides high efficiency. The device is also capable of operating in ultralow quiescent current conditions, and the adjustable output voltage allows the regulator to support a wide variety of low voltage sources.

The FAN2513S33X is a versatile, low cost, high efficiency linear voltage regulator. Its simplified design, with only two inputs, makes it ideal for use in applications that require multiple regulated power supplies. The device\'s high current capability, low quiescent current, low output voltage ripple, and over-current, short-circuit, and thermal protections make it the perfect choice for a variety of applications.

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