MC78FC50HT1G

Current - Output:	80mA
Base Part Number:	MC78FC50
Supplier Device Package:	SOT-89-3
Package / Case:	TO-243AA
Mounting Type:	Surface Mount
Operating Temperature:	-30°C ~ 80°C
Protection Features:	Over Current
Control Features:	--
PSRR:	--
Current - Quiescent (Iq):	3.9µA
Series:	--
Voltage Dropout (Max):	0.7V @ 40mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	5V
Voltage - Input (Max):	10V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Not For New Designs
Packaging:	Tape & Reel (TR)

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INTRODUCTION

The MC78FC50HT1G is an Linear Voltage Regulator (LDO) device manufactured by ON Semiconductor. It is a three-terminal regulator with a wide range of input voltage and a fixed output voltage of 5 volts. It features low dropout voltage and low quiescent current drain. It is designed to provide high initial accuracy and superior line and load regulation. The MC78FC50HT1G is optimized for low noise operation and fast transient response.

APPLICATION FIELD

The MC78FC50HT1G is widely used as a power supply in a variety of applications. It’s suitable for use in portable electronics, such as PDAs, and can also be used in computers and servers, television sets and related high current applications. It is widely used in industrial, automotive and communication systems.The MC78FC50HT1G is widely used in the automotive industry, such as in the electronic control units (ECUs) of vehicles. It can provide a stable power supply for the operation of vehicle systems. The device ensures that the ECU operates correctly even with high transients and under-voltage conditions. This device also helps to ensure that ECU components remain powered up even in case of power heterogeneity. The device is also used in other industrial applications, such as test and measurement, medical and RF/Transceivers systems. In these applications, it provides a reliable power supply for the operation of many different devices. The device offers a good level of power supply stability and noise reduction.

WORKING PRINCIPLE

The MC78FC50HT1G operates as a linear voltage regulator, which is a type of voltage regulator that provides a stable output voltage, regardless of changes in input voltage or load. It achieves this through a series of mechanisms, in which a reference voltage is provided from an external power source and compared to the corresponding feedback voltage. The MC78FC50HT1G has an internal pass element, which is a transistor that is used to adjust the output voltage, based on the reference voltage. This element is connected in series to the output terminal, and monitors the output voltage. The output voltage is compared to the reference voltage. If the output voltage is higher than the reference voltage, the transistor decreases the output voltage. The device compensates for any changes to the input voltage or load, using a closed-loop feedback circuit. This allows the device to provide a stable output voltage regardless of the changes to the input voltage and load.

CONCLUSION

The MC78FC50HT1G is a three-terminal linear voltage regulator that can be used in a variety of applications. It features low dropout voltage and low quiescent current drain, which makes it suitable for use in portable electronics, such as PDAs. The device also provides a good level of power supply stability and noise reduction for many different industrial applications. It operates by comparing a reference voltage to the corresponding feedback voltage and adjusting the output voltage based on the reference voltage.

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