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LM2990T-12
+Lista de MateriaisIC REG LINEAR -12V 1.8A TO220-3
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FabricanteTexas Instruments
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Peça do Fabricante #LM2990T-12
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Ficha Técnica LM2990T-12 DataSheet
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Pacote TO-220 (NDE)-3
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Especificações
| Atributo | Valor |
| 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 |
Visão Geral
Description
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
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
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
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
Application
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.