L7805ABV Voltage Regulator: Overview, Features, and Applications

L7805ABV Voltage Regulator

Product Description

Part Number: L7805ABV 

Manufacturer: STMicroelectronics

Description: Positive Fixed Voltage Regulator IC with 1.5A output to 220V

Lead Time: Can Ship Immediately

Datasheet: Datasheet PDF

Category: Integrated Circuits (ICs), Power Management (PMIC), Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Number of Pins: 3

Short Description

With several fixed output voltages and TO-220, TO-220FP, D2PAK or DPAK packages, the L78 series offers two-terminal positive regulators useful for a variety of applications. By providing local control on a card, these regulators eliminate issues associated with distribution. There is a permanent current limiter, a thermal shutdown, and a safe area protection in each of these types that makes them virtually indestructible. An output current of over 1 A can be delivered if sufficient heat sinking is provided. With external components, these devices can be used to adjust voltage and current, even though they are primarily designed as fixed voltage regulators.

 

With its several fixed output voltages and TO-220, TO-220FP, TO-3, D2PAK and DPAK packages, the L7805ABV is a three-terminal positive regulator that can be used in a wide range of applications. By eliminating single point regulation's distribution problems, these regulators provide local on-card regulation. To make them virtually indestructible, mechanical systems are completely current limiting, thermally shut down, and housed in safe areas. Over 1 A of output current can be delivered if adequate heat sinking is provided. With external components, these devices can be used to adjust voltages and currents, even though they are designed primarily as voltage regulators.

Product Specification

There is a wide range of applications within the electronics industry that can benefit from STMicroelectronics L78 Series fixed output voltage regulators. Having local on-card regulation can eliminate problems associated with single point positive linear voltage regulators. Moreover, there is a lot to offer from this voltage regulator which I am sharing below. So don't forget to check it out:

Features

Linear voltage regulators such as the L7805ABV provide stable and regulated output voltages of 5 volts. This voltage regulator is manufactured by STMicroelectronics and belongs to the L7805 series. The L7805ABV voltage regulator has the following features:

 

Output Voltage:

 

In addition to providing a fixed 5 volt output, the L7805ABV also provides a fixed current output of 100 milliamps. The power supply is therefore suitable for applications requiring 5V.

 

Voltage Regulation:

 

It removes excess voltage by dissipating it as heat, making it a linear regulator. Even when input voltages or load conditions change, the output voltage remains constant.

 

Maximum Input Voltage:

 

L7805ABV typically handles 35 volts as its maximum input voltage. Regulation may not be possible beyond this voltage, and damage could result.

 

Output Current:

 

A certain maximum output current is designed into the regulator. The regulator's performance may be adversely affected by exceeding this current. It is important for developers to consider the current requirements of the application they are designing.

 

Dropout Voltage:

 

This voltage difference is necessary for proper regulation of the L7805ABV. There should be at least 2 volts difference between the input and output voltages, which is typical.

 

Thermal Overload Protection:

 

In most models of the L7805ABV, thermal overload protection limits the regulator's operation if certain temperatures are exceeded, which can cause the regulator to shut down temporarily. In this way, excessive heat can be prevented from causing damage.

 

Short Circuit Protection:

 

Short circuit protection is often built into the regulator so damage can be prevented in the event of a short circuit being generated at the output. When the output current is shorted, it normally limits it.

 

Adjustable Versions:

 

There are also adjustable versions (like L7805CV) in the L7805 series in addition to the fixed voltage version (5V).

 

Package Options:

 

There are several package options available for the L7805ABV, including TO-220, TO-220FP, and others. There may be a need to choose a specific package depending on the mounting preference and the application requirements.

 

Internal Thermal Shutdown:

 

To avoid long-term damage from overheating, the regulator may also have an internal thermal shutdown mechanism.

 

Compliance:

 

This device may meet a variety of industry standards and regulations, ensuring interoperability and reliability.

 

Wide Operating Temperature Range:

 

It can be used in a variety of environmental conditions due to its wide temperature range.

 

In order to ensure that they are using the right variant of the L7805ABV, designers should refer to the datasheet provided by STMicroelectronics. An application guide, pin configurations, thermal considerations, and electrical characteristics are provided in the datasheet.

Applications of L7805ABV Voltage Regulator

Electronic circuits and systems with regulated 5V power supplies can benefit from the use of this voltage regulator. The L7805ABV is commonly used for the following applications:

 

Microcontroller Power Supply:

 

Microcontrollers commonly use the L7805ABV as a steady supply of 5 volts. Providing a voltage range that is appropriate for the microcontroller contributes to its reliability.

 

Digital Logic Circuits:

 

It ensures the proper and consistent operation of electronic components such as logic gates and flip-flops in digital electronic circuits.

 

Embedded Systems:

 

As a regulated power source, the L7805ABV is commonly used by microcontrollers, memory, and other embedded components.

 

Consumer Electronics:

 

A regulator ensures a stable and regulated 5-volt power supply for digital and analog components in various consumer electronics, such as audio amplifiers, radios, and digital devices.

 

Powering Sensors:

 

Power supplies are often required for sensors that measure temperature, humidity, or movement. These sensors are powered by the L7805ABV, which regulates their voltage.

 

LED Lighting Applications:

 

Constant voltage sources are often required by LED drivers and lighting circuits. LED applications require the L7805ABV to regulate voltage, ensuring increased performance and brightness.

 

Educational Electronics Projects:

 

Various voltage regulation concepts can be taught using the L7805ABV in educational settings and hobbyist projects. Beginners in electronics will find it easy to use.

 

Powering Operational Amplifiers (Op-Amps):

 

The power supply of a circuit is important to the operation of operational amplifiers, such as amplifiers and filters. A regulated 5-volt voltage source is provided to the op-amps by the L7805ABV.

 

Battery Chargers:

 

The L7805ABV can be used to regulate the charging voltage in battery chargers, especially for rechargeable batteries with a 5-volt voltage.

 

Radio Frequency (RF) Circuits:

 

A stable power supply may be required for some RF circuits and communication modules. Voltage levels can be ensured by integrating the L7805ABV into these circuits.

 

Instrumentation Systems:

 

The L7805ABV is a voltage source that can be used in instrumentation systems, such as measurement and control systems.

 

Voltage Reference for Analog-to-Digital Converters (ADCs):

 

Systems that utilize ADCs can use the L7805ABV as a voltage reference. Using this method, it is possible to convert analog signals into digital signals with precision.

 

DIY Electronics Projects:

 

The L7805ABV is widely used by DIY enthusiasts and hobbyists to power a variety of projects that require regulated 5-volt power.

 

Lab Power Supplies:

Designed for testing and experimentation, the L7805ABV provides a stable and regulated 5-volt output for laboratory power supplies.

 

Automotive Electronics:

When a stable power supply is required for specific components in automotive applications, the L7805ABV may be used.

 

An array of electronic systems and devices benefit from the L7805ABV voltage regulator's reliability and regulation in these applications.

Faqs

Question 1: What is the purpose of the L7805ABV regulator?

 

Answer: Several electronic components, including microcontrollers, sensors, and digital logic circuits, rely on the regulator to ensure that they have a constant and reliable supply of 5-volts.

 

Question 2: What is the input voltage range of the L7805ABV?

 

Answer: A voltage range of 7 to 35 volts is typically used for the L7805ABV. A stable 5 volts is obtained from the higher input voltage.

 

Question 3: What is the dropout voltage of the L7805ABV?

 

Answer: An output voltage difference of only a few volts is required for proper regulation, and that voltage difference is called the dropout voltage. There is usually 2 volts of voltage required for the L7805ABV.

 

Question 4: What is the maximum output current of the L7805ABV?

 

Answer: A certain maximum output current is designed into the regulator. An application's current requirements should be taken into account by the designer.

Conclusion

 

With its stable and regulated 5-volt power supply, this voltage regulator from STMicroelectronics is highly reliable and widely used in a wide range of electronic applications. For microcontrollers, sensors, digital logic circuits, and numerous other electronic components that require a consistent voltage level, the L7805ABV excels with its straightforward design and fixed voltage output.

 

Designed for input voltages ranging from 7 volts to 35 volts, the L7805ABV is appreciated by engineers for its simplicity, robustness, and versatility. In diverse operating conditions, its reliability and performance are enhanced by its thermal overload protection and dropout voltage characteristics.