Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Applications:	Converter, Intel Pentium® GTL+
Voltage - Input:	2.4 V ~ 12 V
Number of Outputs:	1
Voltage - Output:	3.3V
Operating Temperature:	0°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	TO-263-4, D²Pak (3 Leads + Tab), TO-263AA
Supplier Device Package:	TO-263-3
Base Part Number:	FAN1587A

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FAN1587AM33X Application Field and Working Principle

Introduction

The FAN1587AM33X is a special purpose voltage regulator device manufactured by Fairchild Semiconductor. It is part of the PMIC – Voltage Regulators – Special Purpose category. This device is designed to supply power to medium to high speed and high current applications. The device contains a buck switching regulator, linear regulator, an operational amplifier, a current sensing circuit and several other components. This regulator can be used to provide power to a number of different applications, making it a very versatile device.

Applications

The FAN1587AM33X is designed to provide power to medium to high-current applications. It can be used in applications such as DC-DC converters, battery chargers, motor drivers, power supplies, and power amplifiers. It can provide voltage regulation with a wide input voltage range from 5V to 20V and can have a regulated output voltage of up to 15V.The device can also be used for motor control applications. It has a wide range of switchable current sinks, making it suitable for controlling the speed of stepper motors,cd brushless motors and solenoids. The device also contains a comparator and adjustable voltage reference which can be used for current sensing in motor control applications.

Features

The FAN1587AM33X is equipped with a range of features that make it well suited for use in medium to high-current applications. The linear regulator has a low quiescent current of just 10 uA. It also has a wide input voltage range of 5V to 20V and is capable of providing a regulated output voltage of up to 15V. The device also has an adjustable voltage reference that can be used for current sensing in motor control applications. In addition, the device has a built-in 200 mA current loop, which can be used to regulate current in motor control applications.The device also has a frequency scaling feature. This allows the switching regulator to operate at a frequency between 200 KHz and 2 MHz, depending on the load and input voltage. This feature can be used to optimize efficiency and reduce current noise.

Working Principle

The FAN1587AM33X works by regulating the voltage and current supplied to the load. It operates on a buck topology. This means that the input voltage is converted from a higher voltage to a lower voltage that is regulated. The output of the regulator is adjustable and can be set to a voltage of up to 15V.The device uses a switching regulator to convert the input voltage to the desired output voltage. The switching regulator switches on and off at a predetermined frequency. As the switching frequency increases, the voltage is converted more efficiently and the current noise is reduced.The linear regulator regulates the output voltage of the switching regulator. It uses a comparator and adjustable voltage reference to ensure that the output voltage is regulated. The current loop ensures that the current supplied to the load is regulated.

Conclusion

The FAN1587AM33X is a special purpose voltage regulator device manufactured by Fairchild Semiconductor. It is designed to supply power to medium to high speed and high current applications. It has a wide input voltage range and a regulated output voltage of up to 15V. The device also contains a buck switching regulator, a linear regulator, an operational amplifier and a current sensing circuit. It is a versatile device and can be used in applications such as DC-DC converters, battery chargers, motor drivers and power amplifiers. The device also has a frequency scaling feature and a current loop which can be used to regulate current in motor control applications.

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