LM2990T-12

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LM2990T-12

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IC REG LINEAR -12V 1.8A TO220-3

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Attribut Wert
Package Tube
ProductStatus Not For New Designs
OutputConfiguration Negative
OutputType Fixed
NumberofRegulators 1
Voltage-Input(Max) -26V
Voltage-Output(Min/Fixed) -12V
VoltageDropout(Max) 1V @ 1A
Current-Output 1.8A
Current-Quiescent(Iq) 1 mA
Current-Supply(Max) 5 mA
PSRR 52dB (1kHz)
ProtectionFeatures Over Temperature, Short Circuit
OperatingTemperature -40°C ~ 125°C
MountingType Through Hole
Package/Case TO-220-3

Übersicht

Description

The LM2990T-12 is a negative voltage regulator designed to provide a stable output voltage of -12 volts. It offers features such as a low-dropout voltage of approximately 0.6 volts at full load, which makes it suitable for applications where the input-to-output voltage differential is minimal. The device can deliver up to 1.5 amps of output current, ensuring it meets the demands of various power supply applications. It includes built-in protection mechanisms such as short-circuit and thermal shutdown protection, enhancing its reliability and durability in adverse conditions.
The LM2990T-12 is well-suited for use in a variety of applications, including powering operational amplifiers, analog circuits, and other systems requiring a stable negative voltage supply. Its design is optimized for easy-to-use functionality and robust performance, making it a common choice for both hobbyists and professional engineers. Packaged in a TO-220 form factor, it offers ease of mounting and efficient heat dissipation, facilitating integration into a wide range of electronic projects.

Equivalent

The LM2990T-12 is a negative voltage regulator. Equivalent products include:
1. UA79M12 - A similar negative voltage regulator with comparable output specifications.
2. MC7912 - Another widely used negative voltage regulator compatible with LM2990T-12.
3. LM7912 - A standard option for negative voltage regulation.
4. L7912CV - Offers similar performance characteristics.
Ensure to check datasheets for exact specifications and compatibility.

Features

The LM2990T-12 is a negative low dropout voltage regulator designed by Texas Instruments. Key features include:
1. Output Voltage: Provides a fixed output of -12V.
2. Input Voltage Range: Capable of handling a wide input voltage range to accommodate various applications.
3. Output Current: Supports up to 1A of output current.
4. Low Dropout Voltage: Offers a low dropout voltage of approximately 0.6V, enhancing efficiency.
5. Reverse Polarity Protection: Protects against reverse polarity input voltages.
6. Current Limiting and Thermal Shutdown: Includes built-in current limiting and thermal shutdown features for added safety and reliability.
7. Low Quiescent Current: Efficient design with low quiescent current, conserving power when inactive.
8. TO-220 Package: Comes in a TO-220 package, which is suitable for heat dissipation and easy mounting.
These features make the LM2990T-12 suitable for applications requiring a stable negative voltage supply with robust protection and efficiency.

Pinout

The LM2990T-12 is a low dropout negative voltage regulator with a fixed output of -12V. It typically comes in a TO-220 package with 5 pins. Here's a concise breakdown of the pin functions:
1. Input: The input pin is where the negative voltage supply is connected. It requires a voltage level higher than -12V (in absolute value) to properly regulate.
2. Ground: This pin serves as the ground reference for the regulator.
3. Output: The output pin provides the regulated -12V output voltage.
4. Shutdown: This pin allows the regulator to be turned off to conserve power. Applying a high logic level to this pin disables the regulator.
5. Vout Sense (optional): It is used to improve the regulation by compensating for the voltage drop across the output leads.
The LM2990T-12 is designed for applications requiring a stable negative voltage output, with features such as over-temperature shutdown and current limiting to protect the device under fault conditions.

Manufacturer

The LM2990T-12 is manufactured by Texas Instruments (TI). Texas Instruments is a global technology company that designs and manufactures semiconductors and various integrated circuits. Its products are used in a wide range of electronic devices, serving industries such as consumer electronics, automotive, industrial, and communications. TI is known for its innovations in analog and embedded processing technology, providing solutions that help engineers create advanced, reliable, and efficient electronic systems.

Application

The LM2990T-12 is a low dropout (LDO) voltage regulator commonly used in applications requiring a negative 12V output. Key application areas include:
1. Power Supply Regulation: Ensures stable voltage for various electronic systems.
2. Industrial Automation: Powers sensors and control systems with precise voltage needs.
3. Telecommunications: Supports equipment requiring stable power inputs.
4. Automotive Electronics: Offers reliable voltage for automotive control modules.
5. Battery-Powered Devices: Extends battery life in portable electronics by efficient power regulation.
6. Networking Equipment: Provides consistent power for networking and communication devices.
These applications benefit from the LM2990T-12's low dropout performance and ability to handle high current loads.

Package

The LM2990T-12 is a negative voltage regulator with a fixed output of -12V. It typically comes in a TO-220 package, which is a through-hole package type with three leads, designed for easy mounting and efficient heat dissipation.

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