Current - Output:	1A
Base Part Number:	MC7808
Supplier Device Package:	DPAK
Package / Case:	TO-252-3, DPak (2 Leads + Tab), SC-63
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Temperature, Short Circuit
Control Features:	--
PSRR:	62dB (120Hz)
Current - Quiescent (Iq):	8mA
Series:	--
Voltage Dropout (Max):	2V @ 1A (Typ)
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	8V
Voltage - Input (Max):	35V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tube

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MC7808BDT - Linear Voltage Regulator

Introduction

The MC7808BDT is a type of linear voltage regulator that is rated to regulate the output voltage of 8V. Designed by the company ON Semiconductor, the MC7808BDT is a polarity-protected, 2-terminal linear Voltage regulator with an unpredictable current capability of up to 800mA. The device offers great performance at an affordable price and its features make it a great choice for many applications.

Features

The MC7808BDT offers some great features that allow it to be used in a variety of applications. These features include:- Polarity protection: The output voltage of the MC7808BDT is polarity protected, meaning that it will not behave unpredictably even when connected to an input voltage of reversed polarity. This feature helps to prevent damage to the device caused by incorrectly wired supplies.- High efficiency: The device operates at high efficiency, meaning that the power lost during voltage conversion is significantly lower than with other types of voltage regulators. - Low dropout voltage: The dropout voltage is the amount of voltage lost during conversion from input to output. The dropout voltage of the MC7808BDT is lower than that of comparable devices, meaning that it is capable of regulating voltage even when the input voltage is close to the output voltage. - Wide input voltage range: The input voltage range of the MC7808BDT is wider than that of many other linear voltage regulators, making it well-suited to applications with unstable or changing power sources.- Low input current: The input current of the MC7808BDT is very low, meaning that it will not draw large amounts of power away from its power source, making it a great choice for battery-powered applications.

Applications

The MC7808BDT is a very versatile device and can be used in a variety of applications. Some of the more common applications include: - Power supplies: The MC7808BDT is commonly used in the design of power supplies, thanks to its high efficiency, wide input voltage range, and low dropout voltage. - Battery-powered devices: The device is also used in battery-powered devices, where its low input current requirement helps to improve battery life. - Automotive applications: The device is also used in automotive applications, where its polarity protection and wide input voltage range make it well-suited to the often-unstable power sources of vehicles. - Industrial equipment: The MC7808BDT is also used in a variety of industrial equipment, where its reliability and high efficiency help to ensure that the equipment operates smoothly and efficiently.

Working Principle

The working principle of the MC7808BDT is relatively simple; the device works by using a series of transistors to control the amount of current flowing through the output terminal. When the voltage at the output terminal is higher than that at the input terminal, the transistors act to reduce the current flow. When the voltage at the output terminal is lower than that at the input terminal, the transistors act to increase the current flow.The MC7808BDT also incorporates a feedback circuit that helps to regulate the output voltage and ensure that the output voltage remains at the desired level, regardless of changes to the input voltage or current. Any excess current is routed back to the input terminal, which helps to reduce power dissipation.

Conclusion

The MC7808BDT is a popular linear voltage regulator that offers great performance at an affordable price. Its features make it a great choice for many applications, from power supplies to battery-powered devices to automotive and industrial equipment. The device functions by using transistors to control the current flow between the input and output terminals, while a feedback circuit helps to regulate the output voltage.

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