LT3080EDD#PBF

Current - Output:	1.1A
Base Part Number:	LT3080
Supplier Device Package:	8-DFN (3x3)
Package / Case:	8-WFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Short Circuit
Control Features:	--
PSRR:	75db ~ 20dB (120Hz ~ 1MHz)
Current - Supply (Max):	30mA
Current - Quiescent (Iq):	500µA
Series:	--
Voltage Dropout (Max):	1.6V @ 1.1A
Voltage - Output (Max):	36V
Voltage - Output (Min/Fixed):	0V
Voltage - Input (Max):	36V
Number of Regulators:	1
Output Type:	Adjustable
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tube

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LT3080EDD#PBF Application Field and Working Principle

Linear voltage regulators are among the most common and basic devices used to provide a reference voltage from a higher input voltage. The LT3080EDD#PBF is a 3A, low-dropout (LDO) linear voltage regulator designed for low-noise, low-dropout operation. It is offered in a wide range of adjustable output voltages, and has a variety of features including reverse current protection, excellent line and load regulations, fast transient response, and a guaranteed on/off logic.

Application Field

The LT3080EDD#PBF is suitable for use in a wide range of applications, such as personal computers, automation systems, distributed power supplies, instrumentation, medical and automotive systems. It is also used in applications where unwanted noise may be a problem, and it is able to provide a regulated output voltage with very low output noise.

Features

The LT3080EDD#PBF is designed for use in low-noise, low-dropout and high-current applications, and it is able to provide a regulated output voltage with very low output noise. Its internal circuitry provides reverse current protection to prevent over-discharge of the input supply. Its output is adjustable from 1.8V to 15.0V, and it is designed for maximum output current of 3A. Its design also ensures excellent line and load regulation, with a guaranteed accuracy of ±1.5%. Its switching frequency is set to 1.2MHz, and its transient response time is fast with a typical settling time of 10us.

Working Principle

The LT3080EDD#PBF is based on the principle of a negative feedback control loop. It monitors the output voltage and compares it with the internally set reference voltage. If the output voltage is greater than the set reference voltage, the LM3080EDD#PBF reduces the current supplied to the output. Conversely, if the output voltage is lower than the set reference voltage, the circuit increases the current supplied to the output.The LT3080EDD#PBF has an on/off logic pin which enables the regulator to be turned on or off from other circuits. It also has a Shutdown mode pin, which can be set to either High or Low, depending on the application. When the Shutdown pin is set to High, the output of the circuit is completely shut off, and its quiescent current decreases to less than 1uA.

Conclusion

The LT3080EDD#PBF is a 3A, low-dropout linear voltage regulator that is suitable for use in applications where low noise and low power are important. Its adjustable output voltage range from 1.8V to 15.0V, and it has excellent line and load regulations and a fast transient response time. The circuit is designed with reverse current protection and on/off logic for protection against over-discharge. Its low-noise and low-power design make it a suitable choice for a wide range of applications, including personal computers, automation systems, distributed power supplies, instrumentation, medical and automotive systems.

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