Voltage Dropout (Max):	1.3V @ 1A (Typ)
Base Part Number:	MC79
Supplier Device Package:	D2PAK
Package / Case:	TO-263-3, D²Pak (2 Leads + Tab), TO-263AB
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 125°C
Protection Features:	Over Current, Over Temperature
Control Features:	--
PSRR:	65dB (120Hz)
Current - Output:	1A
Series:	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	-6V
Voltage - Input (Max):	-35V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Negative
Part Status:	Obsolete
Packaging:	Tube

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MC7906CD2T Application Field And Working Principle

Introduction

The MC7906CD2T is a popular low-dropout linear regulator designed for the post-amplification of analog signals, such as audio power applications. It has a low output noise level of only 21µVrms, and it operates with a wide input voltage range of 4.5V to 40V. This makes it ideal for use in automotive and other networking applications.

Features

The MC7906CD2T includes a number of features to offer superior performance in a variety applications. It supports an input voltage range of 4.5V to 40V, and a stable output voltage range of 1.5V to 15V. It has a minimum output current of 10mA and a maximum output power of 750mW. It has an integrated thermal protection circuit which ensures safe operation of the device in higher temperature conditions. Additionally, it features output overvoltage protection, reverse battery protection, and output current limiting.

Aplication Fied

The MC7906CD2T can be used in a wide range of applications. It is commonly used in professional audio amplifiers and active loudspeakers. It is also ideal for automotive power line applications, as it can support a wide input voltage range. Additionally, it is used in networking equipment, as it operates with low output noise levels and can support a wide range of input voltages.

Working Principle

The MC7906CD2T is an example of a linear voltage regulator. Linear voltage regulators work by connecting the output voltage to a reference voltage, and then the device uses a feedback loop to regulate the output voltage. In the case of the MC7906CD2T, this reference voltage is the internal reference voltage of 1.25V. The device will then use a PNP transistor to reduce the input voltage as required to maintain the desired output voltage. If the output voltage rises above the desired level, the device will turn on the PNP transistor, which reduces the input voltage and lowers the output voltage.

Conclusion

The MC7906CD2T is an example of a low-dropout linear regulator. Its wide input voltage range and low noise levels make it ideal for use in a variety of applications, including professional audio and automotive power line applications. It uses a feedback loop to regulate the output voltage, which is controlled by an internal reference voltage. This regulator offers superior performance, stability, and reliability in a variety of applications.

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