LTC3520EUF#TRPBF

Voltage - Output (Min/Fixed):	0.8V
Base Part Number:	LTC3520
Supplier Device Package:	24-QFN-EP (4x4)
Package / Case:	24-WFQFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	Yes
Frequency - Switching:	100kHz ~ 2MHz
Current - Output:	600mA, 1A
Voltage - Output (Max):	5.5V
Series:	--
Voltage - Input (Max):	5.5V
Voltage - Input (Min):	2.2V
Number of Outputs:	2
Output Type:	Adjustable
Topology:	Buck, Buck-Boost
Output Configuration:	Positive
Function:	Step-Down, Step-Up/Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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LTC3520EUF#TRPBF Application Field and Working Principle

PMIC (Power Management Integrated Circuit) is an integrated circuit specializing in the power management of a system or a specific circuit. Voltage regulators are types of PMIC, and DC DC switching regulators are one of the main categories under them. LTC3520EUF#TRPBF is a DC DC switching regulator that belongs to this type. In this article, we shall look into the application field and working principle of this component.

Application Field

LTC3520EUF#TRPBF is a highly versatile switching regulator that provides a single output at up to 5A from an input with low input voltage. It can be applied to various fields as it can accept a wide range of input voltages, ranging from 2.5V to 16V. Additionally, it can provide a wide range of output voltages, ranging from 0.6V to VIN. This component is hence suitable for use in battery powered systems, automotive applications, and consumer electronics. Additionally, this component can provide up to 5A of current, making it suitable for use in applications where high current is required, such as motor or LED control applications.

Working Principle

LTC3520EUF#TRPBF is a switching regulator that utilizes Pulse Width Modulation (PWM) and adaptive on-time control to regulate output voltage. It takes the input voltage, and adjusts the output voltage by switching the pass transistor ON and OFF. During the ON cycle, a constant current flow is provided to the load, which is subsequently switched OFF until the inductor current has reached the predetermined peak current. As such, the current is regulated without the need for controllable current sources or linear voltage regulators.Additionally, LTC3520EUF#TRPBF utilizes an adaptive on-time control technique, which dynamically adjusts the duty cycle of the PWM switching to maintain the desired output voltage. This improved control scheme allows for precise and stable regulation even with large variations in load current and input voltage.

Conclusion

LTC3520EUF#TRPBF is a highly versatile DC DC switching regulator with a wide operating voltage range and high current output. It utilizes the PWM and adaptive on-time control to provide precise and stable output voltage. As such, it can be applied to various applications such as battery powered systems, automotive applications, and consumer electronics.

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