LDS3985PU18RY

Current - Output:	300mA
Supplier Device Package:	6-DFN (3x3)
Package / Case:	6-VDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TJ)
Protection Features:	Over Temperature
Control Features:	Shutdown
PSRR:	55dB ~ 50dB (1kHz ~ 10kHz)
Current - Supply (Max):	300µA
Current - Quiescent (Iq):	150µA
Series:	Automotive, AEC-Q100
Voltage Dropout (Max):	0.25V @ 300mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	1.8V
Voltage - Input (Max):	6V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

The LDS3985PU18RY is a low-dropout linear voltage regulator. Designed to provide monolithic power management in a small package, it features a high output current of up to 1.8A, low quiescent current of 4.2mA, low noise, and excellent output stability. This regulator offers a wide range of adjustable and fixed output voltages, making it ideal for many applications.

Application

The LDS3985PU18RY is designed to provide reliable, efficient voltage regulation for applications such as automotive, computer peripherals, telecom/networking, and industrial control. Automotive applications such as on-board diagnostics and safety control often require reliable and low-noise voltage regulators. The LDS3985PU18RY is well-suited to this application due to its low quiescent current, low noise, and excellent output stability.The LDS3985PU18RY is also a good choice for computer peripherals such as external storage devices, monitors, and printers. It provides reliable performance in low-noise and low-voltage applications, where its robust design and low quiescent current are often critical.The LDS3985PU18RY is also ideal for applications in telecommunications and networking. It offers a low noise, low quiescent current, and excellent output stability, making it well-suited to these applications.Finally, the LDS3985PU18RY is an excellent choice for industrial control applications, where it features a high output current and low quiescent current. It is well-suited to this application due to its low profile and robust design.

Working Principle

The LDS3985PU18RY is a linear voltage regulator. It operates by taking an input voltage that is greater than the desired output voltage, and then dropping off the excess voltage by passing it through an internal resistance. This creates a voltage drop proportional to the current demanded by the load, which results in the desired output voltage.The LDS3985PU18RY is capable of delivering up to 1.8A of continuous output current with a low quiescent current of 4.2mA. It is designed to maintain a very low output noise and excellent output stability, meaning it can provide a clean power signal to sensitive electronic components.The LDS3985PU18RY also features a wide range of adjustable and fixed output voltages, making it an ideal power management solution for many different applications.

Conclusion

The LDS3985PU18RY is an excellent choice for low-dropout linear voltage regulation applications. It features a high output current of up to 1.8A, low quiescent current of 4.2mA, low noise, and excellent output stability. Its wide range of adjustable and fixed output voltages make it ideal for a variety of applications in automotive, computer peripherals, telecom/networking, and industrial control. By using a linear voltage regulator, the LDS3985PU18RY is capable of providing reliable power to sensitive devices while keeping the output noise and output stability to a minimum.

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