TL780-12KCSE3

Voltage Dropout (Max):	2V @ 1A
Base Part Number:	TL780-12
Supplier Device Package:	TO-220-3
Package / Case:	TO-220-3
Mounting Type:	Through Hole
Operating Temperature:	0°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Reverse Polarity, Short Circuit
Control Features:	--
PSRR:	85dB (120Hz)
Current - Output:	1.5A
Series:	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	12V
Voltage - Input (Max):	30V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tube

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TL780-12KCSE3 Application Field and Working Principle

TL780-12KCSE3 is a three-terminal positive adjustable regulator with internal current and thermal limiting. It features a wide range of output voltage from 1.275V to an adjustable 37.5V maximum. It’s able to deliver up to 12A output current.The TL780-12KCSE3 is designed to meet the requirements of a wide range of systems, such as personal computers, power supplies, and power amplifiers.

Description

The TL780-12KCSE3 is a positive-voltage device with an adjustable output voltage range of 1.275V to an adjustable 37.5V maximum. It combines all active components in one highly integrated device. The TL780-12KCSE3 is designed to provide the utmost economy in addition to flexibility, reliability and performance.

Features

The TL780-12KCSE3 is designed to provide a wide range of features to ensure overall system optimization and protection. Some of the noteworthy benefits include:-Output Voltage Range – The TL780-12KCSE3 features an adjustable output voltage range from 1.275V to an adjustable 37.5V maximum.-Output Current Limit – With an output current capability of up to 12A, the TL780-12KCSE3 is able to meet the system requirements of various devices.-Temperature Monitoring – The TL780-12KCSE3 has an internal temperature monitoring circuit that can reduce the output current when the device temperature reaches a certain level.-Thermal Shutdown – When the power dissipated inside the device reaches a critical level, the thermal shutdown is activated and the internal circuitry is shut down until the temperature inside the device falls.-Short-Circuit Protection – The TL780-12KCSE3 is designed with short-circuit protection, which protects the device against overcurrent and short-circuit conditions.

Working Principle

The TL780-12KCSE3 is based on the LM7805 voltage regulator, which is a 3-terminal adjustable positive voltage regulator device. Its operation is as follows:The TL780-12KCSE3 operates as a voltage regulator by using an internal voltage reference to maintain an accurate output voltage. In order to ensure the output voltage is within the specified level, an internal current-sensing circuit is used to control the output.The current-sensing circuit monitors the current flowing through the output stage and compares it to an internal reference voltage. If the current exceeds the predetermined limit, the voltage regulator will shut down the output stage in order to limit the total power dissipation. The output voltage remains in regulation until the overcurrent condition is removed.The TL780-12KCSE3 is also designed to protect against thermal overload by having an internal thermal sensor. The thermal sensor will detect when the temperature inside the device reaches a predetermined level and will shut down the output stage in order to protect the device from damage.

Conclusion

The TL780-12KCSE3 is an adjustable three-terminal positive voltage regulator device with an adjustable output voltage range of 1.275V to an adjustable 37.5V maximum. It features a wide range of features, including output current limit, temperature monitoring, thermal shutdown, and short-circuit protection. The TL780-12KCSE3 is designed to provide the utmost economy, flexibility, reliability, and performance. It is suitable for powering systems such as personal computers, power supplies, and power amplifiers.

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