BA18BC0WT

Current - Output:	1A
Base Part Number:	BA18BC0
Supplier Device Package:	TO-220-5
Package / Case:	TO-220-5 Full Pack
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 105°C
Protection Features:	Over Current, Over Temperature
Control Features:	Enable
PSRR:	55dB (120Hz)
Current - Supply (Max):	900µA
Current - Quiescent (Iq):	0.5mA
Series:	--
Voltage Dropout (Max):	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	1.8V
Voltage - Input (Max):	16V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tube

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BA18BC0WT Application Field and Working Principle

The BA18BC0WT is a 3-terminal adjustable positive voltage regulator, which belongs to the BA18BC0WT series of linear voltage regulator families. This series is a low-cost, high-efficiency adjustable regulator for use in a wide range of consumer, industrial and commercial applications, including vehicles, machine tools, communications equipment and consumer electronics.

Application Field

The BA18BC0WT is suitable for a wide variety of applications where a single,fixed output voltage or variable adjustable output voltage is required. This series is also suitable for low-voltage and high-frequency operations.A few typical applications for the BA18BC0WT voltage regulator include:

• DC-DC converters with fixed output voltage
• Variable voltage regulaors
• Battery management systems
• Power supply systems
• Secondary power supply solutions
• Stability enhancement solutions

Working Principle

The BA18BC0WT regulates the output voltage by a feedback loop that compares the output to a stable reference voltage. The voltage regulator utilizes an operational amplifier (OPAMP) as the error amplifier and provides a negative feedback system to ensure the stability of the output voltage. The voltage regulator also features current-limiting, overload protection and thermal shutdown capability.The voltage regulator consists of three terminals: Input, Output and Adjustable Voltage. When the input voltage is applied to the Input terminal, it is compared to the reference voltage. The reference voltage is internally generated by a reference voltage source, such as a zener diode. The error amplifier then compares the reference voltage to the output voltage and amplifies the difference between the two voltages. This amplified difference is then fed back to the Adjustable Voltage terminal, which controls the output voltage. The Adjustable Voltage terminal also serves as the setpoint for the output voltage. The BA18BC0WT also has an Overload Protection circuit that senses an excessive output current and turns off the voltage regulator output. This feature prevents damage to the voltage regulator due to excessive loading or a short circuit condition.The Thermal Shutdown circuit monitors the internal temperature of the voltage regulator and turns off the output if the internal temperature exceeds the specified limit. This limits the amount of heat generated by the device, ensuring its long life and reliability.

Conclusion

The BA18BC0WT is an adjustable positive voltage regulator, which belongs to the BA18BC0WT series of linear voltage regulators. It is suitable for a variety of applications, including DC-DC converters, battery management systems, stability enhancement solutions, and more. The BA18BC0WT utilizes an operational amplifier as the error amplifier, with a negative feedback system to ensure the stability of the output voltage. It is also equipped with current-limiting and overload protection functions, as well as a thermal shutdown circuit that protects the device from excessive heat.

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