LP3853ET-3.3

Current - Output:	3A
Base Part Number:	LP3853
Supplier Device Package:	TO-220-5
Package / Case:	TO-220-5 Formed Leads
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Short Circuit
Control Features:	Enable
PSRR:	73dB ~ 57dB (120Hz)
Current - Supply (Max):	10mA
Current - Quiescent (Iq):	4mA
Series:	--
Voltage Dropout (Max):	0.6V @ 3A
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3.3V
Voltage - Input (Max):	7V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tube

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LP3853ET-3.3 Application Field and Working Principle

Introduction

The LP3853ET-3.3 is a low-dropout (LDO) three-terminal adjustable regulator specifically designed for portable applications. This Linear voltage regulator, or linear regulator, belongs to the PMIC (Power Management Integrated Circuit). These linear regulators offers excellent line and load regulation and temperature stability, making it ideal for applications that require a wide range of supply voltage and current.

Application Field

The LP3853ET-3.3 is ideal for a wide range of applications including personal portable computer and PDA applications, cellular phone, digital cameras and other portable handheld products. This LDO regulator is designed to provide a low-noise and low-ripple output voltage, providing an output current up to 250mA, and a fixed output voltage of 3.3V. The LP3853ET is provided in a wide range of package options, including SOT-223, SOT-23, MSOP-10 and SC75 packages, suitable for almost all types of portable products.

Working Principle

The LP3853ET-3.3 is a three-terminal adjustable Linear voltage regulator, meaning that it works based on the concept of linear feedback, with the input voltage being regulated and the transistor being used as a variable resistance. Essentially, the linear regulator functions by comparing the desired output voltage to the actual output voltage, and then using this comparison to adjust the resistance of the transistor. If the voltage is too high, the transistor increases its resistance, allowing a lower voltage to enter the system. Conversely, if the voltage is too low, the resistance of the transistor is reduced, allowing more voltage to enter the system.The LP3853ET-3.3 also features advanced protection features, including short-circuit, over-temperature, over-voltage and reverse current protection. These features help to ensure that the regulator operates within safe limits and ensures protection against unexpected power spikes, interruptions, and other potential problems.

Conclusion

The LP3853ET-3.3 is an excellent choice for portable applications such as personal computers, PDA\'s, cameras, and other mobile products. It offers excellent line and load regulation, high efficiency, and multiple protection features, making it an effective and reliable voltage regulator for mobile applications. Thanks to its adjustable output voltage, it can easily be utilized in different applications, and it is provided in a wide selection of packages, offering even more flexibility when selecting a regulator for Mobile applications.

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