LT3065EDD-3.3#PBF

Current - Output:	500mA
Base Part Number:	LT3065
Supplier Device Package:	10-DFN (3x3)
Package / Case:	10-WFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Reverse Polarity
Control Features:	Current Limit, Enable, Power Good, Soft Start
PSRR:	71dB (120Hz)
Current - Supply (Max):	25mA
Current - Quiescent (Iq):	110µA
Series:	--
Voltage Dropout (Max):	0.51V @ 500mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3.3V
Voltage - Input (Max):	45V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tube

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Introduction

Linear voltage regulators are the primary type of voltage regulators available, and they provide regulated voltage output. They are used in a wide variety of applications—from providing electrical power to integrated circuits to providing regulation in industrial control systems. The LT3065EDD-3.3#PBF is a adjustable output linear regulator, designed to operate with a minimum of external components and circuitry. This article will discuss the application field and working principle of the LT3065EDD-3.3#PBF.

Application Field

The LT3065EDD-3.3#PBF is a three-terminal, adjustable output, low-dropout regulator that is ideal for use in portable applications where low quiescent current and dropped input voltage are critical. It is suitable for use in all types of portable electronic devices, including cameras, smart phones, tablets, and navigational and monitoring systems. The regulator has a wide input voltage range, and its outputs are adjustable from 1.22V to 17V. It has a fast transient response, low noise, and excellent line and load regulation. It also has good stability and thermal protection.The LT3065EDD-3.3#PBF is well suited for use in boost or buck-boost converters, and it has a 0.2Ω series FET pass element that provides a low dropout voltage and good quiescent current. It is efficient and able to draw up to 3A of output current with an external P-Channel MOSFET. Its very low shutdown current of 1µA makes it ideal for battery-powered applications. In addition, the LT3065EDD-3.3#PBF has a low noise and fast transient response, and its output is capable of driving a 5mA load with a 4MHz bandwidth.

Working Principle

The LT3065EDD-3.3#PBF operates by comparing the output voltage to a reference voltage. The reference voltage is derived from an internal band gap reference that is accurate to 0.2%. When the output voltage is below the reference voltage, the error amplifier will begin to turn on the internal P-channel MOSFET, which increases the output voltage and brings it closer to the reference voltage. When the output voltage is equal to the reference voltage, the error amplifier is in a balanced state and no further adjustments are needed.The output voltage of the LT3065EDD-3.3#PBF is controlled by the adjustment pin (ADJ). By connecting a resistive divider between the adjustment pin and ground, the output voltage can be easily adjustable by changing the value of the external resistors. The feedback voltage is proportional to the adjust terminal voltage, so the output voltage of the regulator can be adjusted by simply changing the resistance of the resistive divider.The LT3065EDD-3.3#PBF is an excellent choice for use in portable applications and other battery-powered devices. It has low quiescent current, fast transient response, and excellent line and load regulation. Its adjustable output voltage allows for easy design and tuning, and its wide input voltage range makes it suitable for a variety of applications.

Conclusion

The LT3065EDD-3.3#PBF is a versatile linear voltage regulator with a wide input voltage range and adjustable output voltage. It is suitable for use in portable electronic applications, boost and buck-boost converters, and industrial control systems. It has low quiescent current, fast transient response, and excellent line and load regulation. The LT3065EDD-3.3#PBF is an ideal choice for use in a variety of applications where low power, low dropout voltage, and adjustable output voltage are needed.

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