LTC3620EDC-1#TRPBF

Voltage - Output (Min/Fixed):	1.1V
Base Part Number:	LTC3620
Supplier Device Package:	8-DFN (2x2)
Package / Case:	8-WFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	Yes
Frequency - Switching:	50kHz
Current - Output:	15mA
Voltage - Output (Max):	--
Series:	--
Voltage - Input (Max):	5.5V
Voltage - Input (Min):	2.9V
Number of Outputs:	1
Output Type:	Fixed
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Background

The LTC3620EDC-1#TRPBF is a member of an extended family of DC-DC buck switching regulators that ranges from 0.6V to 28V input voltage and CAN drive up to 20A of continuous current. The device draws only 3µA of sleep current and features programmable switching frequency, adjustable current limit, and overvoltage protection. These features make LTC3620EDC-1#TRPBF popular for a variety of applications, ranging from automotive to medical and industrial.

Application Field

Encased in a small, 8-lead DFN package, the LTC3620EDC-1#TRPBF is an efficient and reliable solution for numerous applications that require high quality, robust dc-dc switching regulators, including automotive, medical and industrial applications. In automotive, the LTC3620EC-1#TRPBF is an ideal choice for DC-DC voltage regulation. It has been designed with precise, dependable monitoring and protection of battery voltage, making it highly suitable for engine ECUs and vehicle navigation systems. Its significant features, including adjustable switching frequency, programmable current limit and overvoltage protect, make it an ideal choice for automotive power systems, providing the necessary redundancy and reliability.The design of the LTC3620EC-1#TRPBF also makes it a great choice for medical and industrial applications requiring precise, high-power DC-DC switching. Its adjustable switching frequency, load regulation and built-in overvoltage protection make it a great choice for medical applications including X-ray machines and pacemakers. Additionally, its high current capability and wide voltage range make it perfect for industrial applications such as factory automation and process control machinery.

Working Principle

The LTC3620EC-1#TRPBF DC-DC switching regulator is a buck-type switching regulator, meaning it utilizes a power inductor to convert between a higher input voltage to a lower output voltage. When the input voltage is at a higher voltage than the output voltage, the two voltages are forced to remain balanced by the buck converter. The controller senses the difference in the input and output voltages, and the power inductor is switched on and off in order to maintain the balance. The inductor’s inductance, when connected in series with a rectifier, works to store energy from the input voltage and releases it when the output voltage drops below the set amount.The LTC3620EDC-1#TRPBF also utilizes a number of other features and components to regulate the output voltage of the DC-DC switching regulator, including an adjustable current limit and a feedback circuit which monitors the output voltage and adjusts the duty cycle of the transistor switch in order to maintain the desired voltage output. The LTC3620EDC-1#TRPBF also utilizes integrated overvoltage protection to protect the device and protect against overvoltage conditions, and an active current limit circuit which prevents the power transistor from overloading.

Conclusion

The LTC3620EDC-1#TRPBF is a versatile and dependable DC-DC switching regulator which provides precise powering of automotive, medical, and industrial applications. With its adjustable switching frequency, programmable current limit, and integrated overvoltage protection, it is engineered to bring reliable power in a wide range of applications. Utilizing a buck converter based on power inductors and a feedback circuit, the LTC3620EDC-1#TRPBF is able to provide a stable output voltage with even under varying load conditions.

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