MC7808ABD2T

Current - Output:	1A
Base Part Number:	MC7808
Supplier Device Package:	D2PAK
Package / Case:	TO-263-3, D²Pak (2 Leads + Tab), TO-263AB
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Temperature, Short Circuit
Control Features:	--
PSRR:	62dB (120Hz)
Current - Quiescent (Iq):	6mA
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Part Status:	Obsolete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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Introduction

PMIC (Power Management Integrated Circuits) are widely used in many products, such as lighting, automotive, audio, and security. They help reduce cost and improve efficiency by providing reliable and repeatable power management solutions. One example of a PMIC is the MC7808ABD2T, a linear voltage regulator. This article will explain the applications and working principles of the MC7808ABD2T.

Application of MC7808ABD2T

The MC7808ABD2T is an adjustable linear voltage regulator with a stable output voltage range of 3V-20V. Its low output voltage makes it suitable for battery-powered devices such as computers, cell phones and medical equipment. It is also widely used in motor-driven applications such as electric vehicles and has a high power efficiency of up to 95%. The MC7808ABD2T is designed to provide reliable and repeatable voltage regulation on all types of power supplies. It is a low-cost, low-power solution and provides high accuracy by using precision bandgap reference and automatic current limiting.

Features of MC7808ABD2T

The MC7808ABD2T offers a range of features optimized for energy-efficient, cost-effective applications. The features include:• Low quiescent current operation (LQC)• Stable output voltage (3V-20V)• Automatic current limiting• Low output impedance• Overload and short circuit protection• Reverse battery protection• Lead-free packaging for environmental protection

Working Principle of MC7808ABD2T

The MC7808ABD2T is based on a two-stage, self-regulating voltage regulator topology where the first stage is a pass transistors based voltage regulator, and the second stage is a series shunt regulator. The pass transistor stage is designed such that it provides the required output current without degrading the regulation of the voltage regulator. The series shunt regulator is a two-wire, matched current source that maintains the set output voltage. It works by automatically adjusting the current in each wire, thereby maintaining the desired voltage.

Conclusion

The MC7808ABD2T is a low-cost, low-power linear voltage regulator that provides high accuracy and reliability. Its features make it ideal for energy-efficient applications such as computers, cell phones and motor-driven applications. It also offers protection against overloads and short circuits, reverse battery protection, and lead-free packaging for environmental protection. This article has discussed the applications and working principles of the MC7808ABD2T.

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