L78L05ABUTR Regulator: Features, Applications and Datasheet

 L78L05ABUTR 

Product Overview

Part Number: L78L05ABUTR

Manufacturer: STMicroelectronics

Description: IC REG LINEAR 5V 100MA SOT89-3

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

The PMIC 3 of L78L05 has been fixed to TO-243AA. Featuring thermal shutdown and internal current limiting, the L78L05ABUTR is a three-terminal positive voltage regulator. Datasheet, features, and applications will be presented in this article.

 

This three-terminal positive voltage regulator is virtually unbreakable due to its thermal shutdown and internal current limiting. They can produce currents up to 100mA with a sufficient heat sink. Designed to reduce noise and solve distribution issues related to single-point regulation, they are designed to be fixed voltage regulators used in a variety of settings. Combining them with power pass components can also create high-current voltage regulators. As well as reducing noise and quiescent current, it improves on Zener diode/resistor combinations.

L78L05ABUTR Manufacturer

As a leading manufacturer of intelligent mobility, extreme versatility, energy, and IoT products, Microelectronics is a global leader. The company is Franco-Italian, located near Geneva, Switzerland, at Plan-les-Ouates. Integrated circuits are also manufactured, marketed, and developed. Automobile, consumer electronics, communications, and computing products are also manufactured, sold, and developed by the company. Today's most innovative electronics solutions use its products, which have one of the industry's broadest technology portfolios. A robust and flexible supply network is provided by its network of manufacturing facilities. Furthermore, it ensures that people and the environment are protected and that stakeholders are kept informed.

Design

L78L05ABUTR Pinout

L78L05ABUTR Pinout

L78L05ABUTR CAD Model

L78L05ABUTR Symbol

 

L78L05ABUTR Footprint

Product Specification

As well as being able to limit current internally, the L78L05ABUTR is also thermally shutdown, making it nearly indestructible. The output current can be up to 100mA if an adequate heat-sink is provided. Because they allow fixed voltage regulation, they can also provide power distribution solutions in addition to local or on-card regulation.

 

Features

STMicroelectronics manufactures the L78L05ABUTR linear voltage regulator, which has a low-dropout (LDO) design. An output voltage of 5 volts can be produced from input voltages as high as 85 volts, due to the design of the L78xx series. The L78L05ABUTR regulator has the following features:

 

Voltage Regulation:

Despite variable input voltages within the specified range, the linear regulator produces a constant output voltage.

 

Low Dropout Voltage:

The "Low Dropout" feature ensures that even if the output voltage is a little higher than the input voltage, the regulator can maintain a stable input voltage. A close match between the input voltage and output voltage makes this useful in some applications.

 

Output Current:

A certain maximum output current is designed into the regulator. The regulator's performance may be adversely affected by exceeding this current. Applications should be designed according to the current requirements.

 

Low Quiescent Current:

Regulators typically consume little quiescent current when regulating voltage, so their quiescent current is low. Power consumption is an important factor in applications requiring this feature.

 

Thermal Overload Protection:

If the temperature of a L78L05ABUTR exceeds a certain level, it may become temporarily shut down by thermal overload protection. As a result, excessive heating is prevented from causing damage.

 

Output Voltage:

An output voltage of 5 volts is provided by the L78L05ABUTR. Therefore, it can be used to power various electronic circuit components requiring a stable 5V supply.

 

Short Circuit Protection:

If there is a short circuit at the output, the regulator may have short circuit protection. It is common for the output current to be limited when there is a short circuit.

 

Internal Thermal Shutdown:

It may also be equipped with a thermal shutdown mechanism to prevent long-term damage from overheating.

 

Fixed Output Voltage Versions:

There are several fixed output voltage versions of the L78L series. It comes in a variety of variants, with the L78L05ABUTR providing a fixed output voltage of 5 volts.

 

Wide Operating Temperature Range:

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

 

Package Options:

With a TO-92 and TO-220 package options, the L78L05ABUTR can be mounted in a variety of ways, making it suitable for a variety of applications.

Applications of L78L05ABUTR Regulator

A voltage regulator such as the L78L05ABUTR can supply 5-volts to a wide range of electronic circuits. The L78L05ABUTR has the following applications:

 

Sensor Power Supply:

It is often necessary to provide sensors with a steady and regulated power supply in order for them to read accurately. Temperature, humidity, and environmental sensors can be powered by the L78L05ABUTR.

 

Digital Logic Circuits:

The L78L05ABUTR delivers a steady 5-volt supply, ensuring proper operation of digital electronic circuits, especially those that use low-power logic ICs.

 

Voltage Reference for ADCs:

As a voltage reference, the L78L05ABUTR ensures accurate analog-to-digital conversions when used with analog-to-digital converters (ADCs).

 

Instrumentation Amplifiers:

A stable power source is often required for precision instrumentation amplifiers. Such applications can benefit from the L78L05ABUTR's regulated voltage.

 

Voltage Divider Biasing:

By providing a stable reference voltage, the L78L05ABUTR can be used in amplifier circuits and biasing networks.

 

LED Drivers:

A constant voltage source is often required for LED lighting applications. To maintain consistent brightness and performance, the L78L05ABUTR regulates the voltage for LED drivers.

 

Low-Power Applications:

Designed for low-power applications where minimizing energy consumption is crucial, the L78L05ABUTR is ideal for low quiescent current and low dropout voltage applications.

 

Educational Electronics:

The L78L05ABUTR is used for teaching voltage regulation and power supply concepts by educators on breadboards and development boards.

 

Lab Power Supplies:

To ensure that experimental and testing results are stable, the regulator is utilized in laboratory power supplies.

 

Automotive Electronics:

Various automotive components require a stable power supply, which can be provided by the L78L05ABUTR.

 

Similar Specs Components

Here in this section, we compared the different components which have the similar species with the L78L05ABUTR Regulator component. Moreover, if you think we miss any important point, then make sure to let us know in the comment section. 

Faqs

Question 1: What is the dropout voltage of the L78L05ABUTR?

Answer: In addition to maintaining a stable output voltage even at input voltages that are slightly above the desired output voltage, the L78L05ABUTR is a low-dropout regulator. In the datasheet, you can find the specific dropout voltage.

 

Question 2: What are the typical applications of the L78L05ABUTR?

Answer: In addition to microcontrollers, sensors, digital logic circuits, and other electronics that require a stable supply of 5 volts, regulators are also used to power various electronic components.

 

Question 3: Can you use the L78L05ABUTR in automotive applications?

Answer: A regulated voltage for specific components may be provided by the L78L05ABUTR in some automotive applications.

 

Question 4: Is the L78L05ABUTR suitable for educational projects?

Answer: In educational projects and prototyping environments, the L78L05ABUTR is commonly used to teach basic voltage regulation concepts.

Final Thoughts

To conclude, STMicroelectronics' L78L05ABUTR regulator provides a reliable and versatile 5-volt power supply for a variety of applications. Various electronic circuits and systems use the L78L05ABUTR because of its low dropout characteristics and thermal protection.

 

Simple, efficient, and easy-to-integrate, engineers and designers love the L78L05ABUTR. The voltage regulator ensures reliable operation of electronic components by providing a consistent output voltage, regardless of whether they are microcontrollers, sensors, or digital logic circuits.