78L05

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78L05

+BOM

IC REG LINEAR 5V 100MA SOT89

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Specifications

Attribute Value
Series 78Lxx
PartStatus Active
OutputConfiguration Positive
OutputType Fixed
NumberofRegulators 1
Voltage-Input(Max) 30V
Voltage-Output(Min/Fixed) 5V
VoltageDropout(Max) 1.7V @ 40mA
Current-Output 100mA
Current-Quiescent(Iq) 5.5 mA
PSRR 49dB (120Hz)
ProtectionFeatures Over Current, Over Temperature, Short Circuit
OperatingTemperature -20°C ~ 120°C (TJ)
MountingType Surface Mount
Package/Case TO-243AA
SupplierDevicePackage SOT-89

Overview

Description

The 78L05 is a popular linear voltage regulator from the 78LXX series, designed to provide a stable 5V output from a higher voltage input. It is commonly used in electronic circuits to ensure a constant voltage supply, protecting sensitive components from voltage fluctuations. The device can handle a maximum output current of approximately 100 mA, making it suitable for low-power applications.
Key features of the 78L05 include short-circuit protection, thermal shutdown, and safe area protection, which enhance its reliability and robustness. The regulator typically comes in a TO-92 package, which is compact and easy to use on breadboards or PCBs.
To operate the 78L05, an input voltage of at least 7V is required, but it should not exceed 20V to avoid damage. It is advisable to use input and output capacitors to improve transient response and stability, especially when used in circuits with varying loads. Overall, the 78L05 is a versatile and efficient solution for maintaining a consistent 5V output in various electronic projects.

Equivalent

The 78L05 is a popular voltage regulator IC that provides a fixed 5V output. Equivalent alternatives include the LM78L05, L78L05, MC78L05, KA78L05, and UA78L05. These are all linear voltage regulators with similar specifications, such as output voltage and current ratings. When selecting an equivalent, ensure compatibility in terms of pin configuration and electrical characteristics.

Features

The 78L05 is a fixed-voltage linear voltage regulator with the following features:
1. Output Voltage: Provides a stable 5V output.
2. Input Voltage Range: Can accept input voltages ranging from 7V to 20V.
3. Output Current: Capable of supplying up to 100 mA of output current.
4. Thermal Overload Protection: Includes built-in protection against overheating.
5. Short-Circuit Protection: Safeguards against output short circuits.
6. Low Quiescent Current: Draws minimal current when there is no load, improving efficiency.
7. Dropout Voltage: Typically requires a dropout voltage of around 2V.
8. Package Options: Available in various packages like TO-92, SOT-89, etc., making it versatile for different applications.
9. Temperature Range: Operates efficiently within a temperature range of 0°C to 125°C.
10. Ease of Use: Requires few external components, simplifying circuit design.
These features make the 78L05 suitable for applications requiring a simple and reliable 5V power supply.

Pinout

The 78L05 is a voltage regulator integrated circuit that provides a constant output voltage of +5 volts. It typically comes in a three-pin package, such as TO-92. The pin count and functions are as follows:
1. Input (Pin 1): This pin is where the unregulated input voltage is supplied. The input voltage must be greater than 7 volts to ensure proper regulation at the output.

2. Ground (Pin 2): This pin is connected to the ground of both the input and the load circuit.
3. Output (Pin 3): This pin provides the regulated +5 volts output voltage. It can supply up to 100 mA of current.
The 78L05 is commonly used in low-power applications where a stable 5V supply is needed, such as in small electronic circuits and microcontroller projects. It includes internal current limiting, thermal shutdown, and safe area protection features for reliable operation.

Manufacturer

The 78L05 is a voltage regulator commonly manufactured by several companies, including Texas Instruments, ON Semiconductor, and STMicroelectronics, among others. These manufacturers are major players in the semiconductor industry, specializing in the design and production of a wide range of electronic components.
1. Texas Instruments: An American technology company renowned for its development and manufacturing of semiconductors and integrated circuits. It serves industries like automotive, industrial, and consumer electronics.
2. ON Semiconductor: Now known as onsemi, this is a leading supplier of semiconductor-based solutions, focusing on automotive, industrial, cloud power, and IoT sectors.
3. STMicroelectronics: A global semiconductor leader based in Europe, offering diverse products that include microcontrollers, sensors, and power management devices, catering to a broad range of electronic applications.
Each of these companies is integral to the electronics supply chain, providing essential components used in numerous electronic devices worldwide. Their expertise spans across multiple areas of technology, reflecting their capabilities in innovation and production efficiency.

Application

The 78L05 is a voltage regulator that provides a fixed 5V output and is commonly used in various application areas. It's ideal for small electronic projects and devices where a stable 5V is required, such as microcontroller power supplies, battery-powered devices, and small appliances. The 78L05 is also used in sensor circuits, communication equipment, and low-power consumer electronics. Its compact size and ability to handle low current make it suitable for use in portable gadgets, DIY projects, and educational electronics kits. Additionally, it can be found in power management systems, where it ensures a consistent voltage level for sensitive components.

Package

The 78L05 is a voltage regulator that typically comes in a TO-92 package, which is a small, plastic, three-pin package. It can also be found in SOT-89 or SO-8 packages for surface-mount applications.