SPX3819S-L-1-2

Current - Output:	500mA
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Reverse Polarity
Control Features:	Enable
PSRR:	--
Current - Supply (Max):	30mA
Current - Quiescent (Iq):	8µA
Series:	--
Voltage Dropout (Max):	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	1.2V
Voltage - Input (Max):	16V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Discontinued at Digi-Key
Packaging:	Tube

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• Introduction - SPX3819S-L-1-2
  • Application Field
  • Working Principle
• Features
  • Input Voltage Range
  • Output Voltage Range
  • Output Voltage Accuracy
  • Line Regulation
  • Load Regulation
  • Quiescent Current
  • Short-circuit Protection
  • Thermal Shutdown
  • Output Enable/Shutdown
• Application Field
  • Automotive Applications
  • Consumption Electronics
  • Industrial Applications
  • Miscellaneous Applications
• Introduction to Linear Voltage Regulators
  • Voltage Regulator Definition
  • Types of Voltage Regulators
  • Voltage Regulator Applications
• SPX3819S-L-1-2 Working Principle
  • Voltage Regulator Topology
  • Features of Linear Voltage Regulators
  • SPX3819S-L-1-2 Operation
• Conclusion

Introduction - SPX3819S-L-1-2

The SPX3819S-L-1-2 is a four-terminal linear voltage regulator manufactured by STMicroelectronics. The device is specifically designed to provide an adjustable output voltage from an input voltage source. It has been widely used in a variety of automotive, consumer electronics, industrial, and miscellaneous applications. This document will discuss the application field and working principle of the SPX3819S-L-1-2.

Features

The SPX3819S-L-1-2 features a wide input voltage range of 4.5V to 20V, making it ideal for applications that require a wide range of input voltages. It has an adjustable output voltage range from 0.6V to 27V with an accuracy of ±2%. It also provides excellent line and load regulation of ±0.01% and ± 0.1%, respectively. The quiescent current is only 0.02mA, which makes it highly efficient and suitable for low-power applications.It provides short-circuit protection, thermal shutdown, and output enable/shutdown features for safe and reliable operation.

Application Field

The SPX3819S-L-1-2 is a versatile device and can be used in a variety of applications.Automotive Applications: The SPX3819S-L-1-2 is ideal for automotive applications such as engine control systems, instrument clusters, and powertrain systems which require highly efficient and reliable voltage regulation.Consumption Electronics: In consumer electronics, the SPX3819S-L-1-2 can be used in a wide range of applications like LED lighting systems, LED displays, electronic displays, LCD panels, and more.Industrial Applications: The SPX3819S-L-1-2 can be used in industrial applications such as motor control systems, temperature measurement systems, industrial control systems, and more which require high-precision and high-stability voltage regulation.Miscellaneous Applications: The SPX3819S-L-1-2 can also be used in a variety of other applications such as audio-video systems, medical equipment, portable devices, and more.

Introduction to Linear Voltage Regulators

A voltage regulator is an electronic device that regulates an alternating-current or a direct-current input voltage to a specific output voltage. The device is designed to stabilize the output voltage to the desired level. Voltage regulators are used in a variety of applications such as power supplies, telecom control systems, computers, and automotive systems, among others. Voltage regulators are classified into two main types, namely linear voltage regulators and switching voltage regulators.

Voltage Regulator Definition

A voltage regulator is any device or circuit that has the capability of maintaining a constant voltage level to the load, regardless of fluctuations in the input voltage source or changes in load current. Voltage regulators are generally used in applications where the input voltage source is greater than the desired output voltage.

Types of Voltage Regulators

The two main types of voltage regulators are linear voltage regulators and switching voltage regulators.Linear voltage regulators are the most commonly used type of voltage regulator. These regulators use a voltage reference and a error amplifier to maintain the output voltage to a predetermined level. Linear voltage regulators are easy to design, highly reliable, and can provide very good voltage regulation.Switching voltage regulators, on the other hand, provide better efficiency and higher output power than linear voltage regulators. However, they are more complex to design and require more components.

Voltage Regulator Applications

Voltage regulators are used in a variety of applications such as power supplies, computers, automotive systems, telecom control systems, and more. The main purpose of a voltage regulator is to maintain a constant output voltage level, regardless of fluctuations in the input voltage source or changes in load current. Voltage regulators are also used to protect other electronic components from excessive input voltages.

SPX3819S-L-1-2 Working Principle

The SPX3819S-L-1-2 is a four-terminal adjustable linear voltage regulator. It uses a voltage reference and an error amplifier to regulate the output voltage to the desired level. The error amplifier compares the output voltage to the internal reference and controls the pass transistor to adjust the output voltage accordingly.

Voltage Regulator Topology

The SPX3819S-L-1-2 is an adjustable linear regulator that uses an error amplifier and an internal programmable reference voltage to control the output voltage. It has an input voltage of 4.5V to 20V and an adjustable output voltage of 0.6V to 27V. The device features excellent line and load regulation of ±0.01% and ± 0.1%, respectively.

Features of Linear Voltage Regulators

Linear voltage regulators are easy to design and provide very good voltage regulation. They are highly reliable and can operate in an environment with wide temperature ranges. Linear voltage regulators are also power efficient and can support a wide range of load currents.

SPX3819S-L-1-2 Operation

The SPX3819S-L-1-2 is a four-terminal adjustable linear voltage regulator with a wide input voltage range of 4.5V to 20V and an adjustable output voltage of 0.6V to 27V. It features excellent line and load regulation of ±0.01% and ± 0.1%, respectively. It has a low quiescent current of 0.02mA and offers short-circuit protection, thermal shutdown, and output enable/shutdown features.

Conclusion

The SPX3819S-L-1-2 is a four-terminal, adjustable linear voltage regulator manufactured by STMicroelectronics. It is ideal for automotive, consumer, industrial, and miscellaneous applications due to its wide input voltage range, adjustable output voltage range, high accuracy, excellent line and load regulation, and low quiescent current. It is based on the linear voltage regulator topology and provides short-circuit protection, thermal shutdown, and output enable/shutdown features.

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