MC78M05ACTG

Series:	--
Packaging:	Tube
Part Status:	Active
Output Configuration:	Positive
Output Type:	Fixed
Number of Regulators:	1
Voltage - Input (Max):	35V
Voltage - Output (Min/Fixed):	5V
Voltage - Output (Max):	--
Voltage Dropout (Max):	--
Current - Output:	500mA
PSRR:	80dB (120Hz)
Control Features:	--
Protection Features:	Over Temperature, Short Circuit
Operating Temperature:	0°C ~ 125°C
Mounting Type:	Through Hole
Package / Case:	TO-220-3
Supplier Device Package:	TO-220AB
Base Part Number:	MC78M

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Introduction

The MC78M05ACTG Linear Voltage Regulator is a Variable Voltage Regulator designed to provide a highly stable output voltage and current. This regulator is used in a wide variety of applications and offers excellent power rating and low drop-out. The operating frequency of this device is tailored to the application, and it can be used to provide a stable supply voltage for PWM and DSP operations. The MC78M05ACTG provides a highly stable output voltage and current that can be adjusted over a wide range, making it ideal for use in applications such as motor and actuator control, where precise control of the load voltage is required.

Application and Working Principle

The MC78M05ACTG is designed to be used in a wide range of applications, such as automotive and industrial systems, mobile phones and other wireless communication devices, and embedded computer and process control equipment. This linear voltage regulator is ideal for use where high current is required and provides excellent power rating and low drop-out. The MC78M05ACTG is usually powered through a 3.3 to 6 VDC input and contains four adjustable voltage scales which allow users to adjust the voltage output. Its adjustable voltage defines the output voltage and current it can supply to the load. The MC78M05ACTG voltage regulator also provides short-circuit protection, reverse-polarity protection, and optional current-limiting protection.The working principle of the MC78M05ACTG is based on the use of a series of pass transistors in which one is always in "ON" state. This series of pass transistors is connected to the base of a Darlington transistor, which acts as a variable current sink. As the output voltage increases, the current sink is adjusted to keep the voltage constant. The variable current sink in the MC78M05ACTG is controlled by a reference voltage. When the output voltage is higher than the reference voltage, the pass transistors will reduce their current and the Darlington transistor will reduce its current as a result. This way, the output voltage is kept constant.

Conclusion

The MC78M05ACTG is a high power, low drop-out, adjustable voltage regulator designed for a variety of automotive and industrial applications. It provides excellent power rating, low drop-out, and adjustable voltage output over a wide range. It is highly stable, with precise current and voltage control, and provides short-circuit protection, reverse-polarity protection, and optional current limiting protection. The MC78M05ACTG is a widely used device in applications such as motor and actuator control, where precise control of the load voltage is required.

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