LM2940S-5.0

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LM2940S-5.0

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IC REG LIN 5V 1A DDPAK/TO263-3

  • HerstellerTexas Instruments

  • Herstellerteil #LM2940S-5.0

  • Paket TO-263

  • Auf Lager1935

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Spezifikationen

Attribut Wert
Package Tube
ProductStatus Not For New Designs
OutputConfiguration Positive
OutputType Fixed
NumberofRegulators 1
Voltage-Input(Max) 26V
Voltage-Output(Min/Fixed) 5V
VoltageDropout(Max) 1V @ 1A
Current-Output 1A
Current-Quiescent(Iq) 10 mA
Current-Supply(Max) 15 mA
PSRR 64dB (120Hz)
ProtectionFeatures Over Current, Over Temperature, Reverse Polarity, Short Circuit
OperatingTemperature -40°C ~ 125°C
MountingType Surface Mount
Package/Case TO-263-4, D²Pak (3 Leads + Tab), TO-263AA

Übersicht

Description

The LM2940S-5.0 is a low dropout voltage regulator designed to provide a stable 5V output. Its main feature is the low dropout voltage of typically 0.5V at a full load of 1A, making it efficient for use with low-headroom applications. The device is housed in a TO-263 surface-mount package and is designed for various applications including automotive, industrial, and consumer electronics.
Key specifications include:
- Input Voltage Range: Typically up to 26V.
- Output Current: Up to 1A.
- Output Voltage: Fixed at 5.0V.
- Quiescent Current: Low, enhancing efficiency.
- Protection Features: Includes current limiting and thermal shutdown to prevent damage under fault conditions.
The LM2940S-5.0 is favored for its reliability and ease of use, with a minimal number of external components needed for operation. Its low dropout level makes it particularly useful in battery-powered applications where maximizing battery life is critical. Its internal circuitry ensures stable operation even with input voltage fluctuations, enhancing its utility in diverse environments.

Equivalent

The LM2940S-5.0 is a low-dropout (LDO) voltage regulator. Equivalent products include:
1. MIC29300-5.0WT by Microchip Technology
2. LD1117S50 by STMicroelectronics
3. KA378R05 by ON Semiconductor
4. NCP1117ST50T3G by ON Semiconductor
5. LP2953-5.0 by Texas Instruments
These alternatives offer similar voltage regulation capabilities but ensure to verify specific electrical characteristics and package compatibility for direct replacements.

Features

The LM2940S-5.0 is a low dropout (LDO) voltage regulator designed to provide a stable 5V output with a minimum dropout voltage. Key features include:
1. Low Dropout Voltage: Typically around 0.5V at full load, allowing the device to maintain regulation even with a relatively low input voltage.
2. Output Current: Capable of supplying up to 1A of output current.
3. Stability: Requires only a 22µF electrolytic capacitor on the output for stability across the full range of input voltages and load conditions.
4. Thermal Protection: Includes over-temperature shutdown to prevent damage from excessive heat.
5. Short-circuit Protection: Current limiting to protect against output short circuits.
6. Low Quiescent Current: Typically around 10mA, which helps in applications requiring energy efficiency.
7. Reverse Battery Protection: Designed to protect the regulator from damage if the battery is connected backward.
8. Wide Input Voltage Range: Typically operates with input voltages from 6V to 26V.
These features make the LM2940S-5.0 suitable for a variety of applications including automotive, industrial, and consumer electronics.

Pinout

The LM2940S-5.0 is a low-dropout voltage regulator with a fixed output voltage of 5.0V. It typically comes in a TO-263 (S) package. The pin count and functions are as follows:
1. Pin 1 (Input): This is the input pin where the unregulated voltage is applied. It must be higher than the desired output voltage plus the dropout voltage.
2. Pin 2 (Ground): This is the ground pin and serves as the reference point for the input and output voltages.
3. Pin 3 (Output): This is the output pin where the regulated 5.0V is provided.
The LM2940S-5.0 is designed to provide a stable 5.0V output with low dropout voltage and is capable of delivering up to 1A of output current. It features low quiescent current and good line and load regulation, making it suitable for various applications in electronics that require a stable power supply.

Manufacturer

The LM2940S-5.0 is manufactured by Texas Instruments (TI). Texas Instruments is a global semiconductor company that designs and manufactures a wide range of electronic products and components. As one of the largest and most well-known companies in the semiconductor industry, TI specializes in producing analog and embedded processing chips, which are used in a variety of electronic applications across different sectors, including industrial, automotive, personal electronics, and communications equipment. The LM2940S-5.0 is a voltage regulator, and Texas Instruments is known for its strong portfolio of such components, making them a key player in powering and managing electronic systems efficiently.

Application

The LM2940S-5.0 is a low-dropout voltage regulator commonly used in applications requiring a stable 5V output. Key application areas include automotive electronics for power stabilization, battery-powered devices due to its low quiescent current, microcontroller power supplies, communication equipment, and portable instrumentation. Its capability to maintain regulation over a wide input voltage range makes it suitable for industrial applications as well. Additionally, it’s used in consumer electronics where efficient power management is crucial, and in circuits requiring low noise and high precision. Its thermal and short-circuit protection features make it reliable for various demanding environments.

Package

The LM2940S-5.0 is a low-dropout voltage regulator in a TO-263 surface-mount package. It is designed for applications requiring a 5.0V output with a current capacity of up to 1A. The TO-263 package provides efficient thermal performance, making it suitable for various electronic devices.

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