LM2990S-5.0

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LM2990S-5.0

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IC REG LIN -5V 1.8A DDPAK/TO263

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Especificações

Atributo Valor
Package Tube
ProductStatus Active
OutputConfiguration Negative
OutputType Fixed
NumberofRegulators 1
Voltage-Input(Max) -26V
Voltage-Output(Min/Fixed) -5V
VoltageDropout(Max) 1V @ 1A
Current-Output 1.8A
Current-Quiescent(Iq) 1 mA
Current-Supply(Max) 5 mA
PSRR 58dB (1kHz)
ProtectionFeatures Over Temperature, Short Circuit
OperatingTemperature -40°C ~ 125°C
MountingType Surface Mount
Package/Case TO-263-4, D²Pak (3 Leads + Tab), TO-263AA

Visão Geral

Description

The LM2990S-5.0 is a monolithic integrated circuit designed as a negative voltage regulator. Part of the LM2990 series, it provides a fixed output voltage of -5.0V. This regulator is designed to deliver up to 1.5A of output current with high efficiency and low dropout voltage, which is typically around 0.6V at 1A. It features excellent line and load regulation, making it suitable for a variety of applications requiring stable voltage outputs under varying input conditions.
Key features include short-circuit protection, thermal shutdown, and reverse polarity protection, enhancing its reliability in different operational environments. The LM2990S-5.0 is commonly used in applications like power supplies, battery-powered devices, and other electronic circuits needing a stable negative voltage rail.
This device is typically housed in a TO-220 or similar package, facilitating heat dissipation through a heatsink if necessary. Its design ensures ease of use with minimal external components required, making it a convenient choice for both professional and hobbyist electronic projects.

Equivalent

The LM2990S-5.0 is a negative voltage regulator. Equivalent products might include the LT1033, MC7905, and NTE960. These alternatives offer similar negative voltage regulation capabilities, though it's essential to verify specific requirements like voltage, current ratings, and package type to ensure compatibility with your application.

Features

The LM2990S-5.0 is a negative voltage regulator designed to provide a fixed output voltage of -5.0V. Key features include:
1. Wide Input Voltage Range: It can handle input voltages from -16V to -26V, offering flexibility in various applications.

2. High Output Current: Capable of delivering up to 1.5A of output current, making it suitable for powering medium-load devices.
3. Low Dropout Voltage: The regulator exhibits a dropout voltage of approximately 0.6V at full load, ensuring efficient operation.
4. Thermal Overload Protection: Built-in thermal shutdown prevents damage caused by overheating.
5. Current Limiting: Protects against overcurrent conditions by limiting the output current.
6. Reverse Polarity Protection: Guards against damage from incorrect polarity connections.
7. Low Output Noise: Ensures minimal output voltage noise, which is critical for noise-sensitive applications.
8. TO-263 Package: The device comes in a compact surface-mount package, suitable for space-constrained designs.
These features make the LM2990S-5.0 a robust choice for providing stable negative voltage in a variety of electronic applications.

Pinout

The LM2990S-5.0 is a negative voltage regulator with a fixed output of -5.0 volts. It is typically housed in a TO-263 (D2PAK) package, which features 5 pins. Here are the pin functions:
1. Input (Pin 1): This is the pin where the input voltage is supplied. The voltage should be more negative than the desired output voltage.
2. Ground (GND) (Pin 2): This pin is connected to the ground of the circuit, providing a common reference point for the input and output voltages.
3. Output (Pin 3): The regulated output voltage is supplied through this pin. For the LM2990S-5.0, this would be a stable -5.0 volts under the specified conditions.
4. Shutdown (SD) (Pin 4): This pin is used to enable or disable the regulator. Pulling it to a high state turns off the regulator, while a low state enables it.
5. NC (No Connect) (Pin 5): This pin is not internally connected and can be left floating or grounded.
The LM2990S-5.0 is suitable for applications requiring negative voltage regulation with high precision and low dropout characteristics.

Manufacturer

The LM2990S-5.0 is manufactured by Texas Instruments. Texas Instruments (TI) is an American technology company that specializes in the design and production of semiconductors and various integrated circuits. These components are widely used in electronic devices and systems across various industries, including consumer electronics, automotive, industrial, and communications. TI is known for its innovation in analog and embedded processing products, and it plays a significant role in the global electronics supply chain.

Application

The LM2990S-5.0 is a low dropout (LDO) negative voltage regulator that provides a stable -5.0V output. It is commonly used in applications requiring a fixed negative voltage, such as in power supplies for analog and digital circuits, noise-sensitive instrumentation, and battery-powered devices. Its low dropout voltage and high precision make it suitable for use in telecommunications equipment, automotive electronics, and industrial control systems. Additionally, it can be used in applications where space is a concern, as it comes in a compact package. Its ability to maintain regulation with low input-to-output differentials makes it ideal for circuits requiring efficient power management.

Package

The LM2990S-5.0 is housed in a TO-263 package, which is a surface-mount, 5-pin package type. This package is designed for efficient thermal performance and is commonly used in power supply applications.

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