MC7812CD2TG

Current - Output:	1A
Base Part Number:	MC7812
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 Temperature, Short Circuit
Control Features:	--
PSRR:	60dB (1kHz)
Current - Quiescent (Iq):	6.5mA
Series:	--
Voltage Dropout (Max):	2V @ 1A (Typ)
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	12V
Voltage - Input (Max):	35V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tube

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MC7812CD2TG Application Field and Working Principle

Linear voltage regulators are essential in providing an output voltage that is equal to the reference voltage, regardless of the changes in voltage or load current. The MC7812CD2TG is one such voltage regulator that is designed to be a cost-effective solution for low power linear voltage regulation. It offers performance in both transient response and output voltage noise of +12 V and -12 V DC output.

Features of the MC7812CD2TG

The MC7812CD2TG is a 3-terminal positive voltage regulator that offers a fixed +12V output. It also includes a thermal shutdown feature that ensures reliable output over a wide temperature range. The regulator has an output current limiting circuit that limits output current to 1.5A and can withstand a peak overload of 16A for 120ms. The device also has overload protection, short-circuit protection, and reverse polarity protection.

Application Field of the MC7812CD2TG

The MC7812CD2TG is mainly used in applications that require a low-noise voltage regulator with a fixed +12V output. It can be used in a variety of applications such as industrial, automotive, and telecommunications. It can also be used in applications that require reliable and stable power supply such as notebook computers, LCD monitors, and industrial control systems.

Working Principle of the MC7812CD2TG

The working principle of the MC7812CD2TG is based on a simple positive voltage regulator circuit. It uses a voltage reference, an operational amplifier, a pass transistor, and a series pass element to create a feedback loop. The voltage reference provides a fixed reference signal to the operational amplifier, which in turn controls the pass transistor. This causes the output voltage to remain at a fixed +12V, regardless of load or input voltage variations. The MC7812CD2TG can also be used as a dual output regulator, with both positive and negative outputs. It works in the same way as its single output counterpart, except that it has two voltage referencing circuits and two sets of feedback components. This allows it to provide both +12V and -12V outputs.

Conclusion

The MC7812CD2TG is a cost-effective solution for applications that require a reliable and low-noise voltage regulator. It is ideal for industrial, automotive, and telecommunications applications where a regulated +12V DC output supply is needed. The device can provide a fixed +12V DC output, and can also be used as a dual output regulator to provide both +12V and -12V outputs. Its thermal shutdown feature ensures reliable output over a wide temperature range, while its output current limiting and overload protection circuits reduce the risk of damage from overloads.

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