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LM2940CSX-5.0

Name: LM2940CSX-5.0
Rating: 4.7 (12 reviews)

IC REG LINEAR 5V 1A TO263

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資料表 LM2940CSX-5.0 DataSheet
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規格

Part Status	Not For New Designs
Output Configuration	Positive
Output Type	Fixed
Number of Regulators	1
Voltage - Input (Max)	26V
Voltage - Output (Min/Fixed)	5V
Voltage Dropout (Max)	0.8V @ 1A
Current - Output	1A
Current - Quiescent (Iq)	10 mA
PSRR	64dB (120Hz)
Protection Features	Over Current, Over Temperature, Reverse Polarity, Short Circuit
Operating Temperature	0°C ~ 125°C
Mounting Type	Surface Mount
Package / Case	TO-263-4, D2PAK (3 Leads + Tab), TO-263AA
Supplier Device Package	TO-263 (DDPAK-3)
Base Product Number	LM2940
Current - Supply (Max)	15 mA

概述

Description

The LM2940CSX-5.0 is a low dropout (LDO) voltage regulator designed to provide a stable 5.0V output with a maximum output current of 1A. It offers a dropout voltage of typically 0.5V at full load, making it suitable for applications where the input voltage is close to the output voltage. The device features built-in thermal protection and current limiting to safeguard against overload conditions.
Key characteristics include a wide input voltage range (up to 26V), low quiescent current, and high power supply rejection ratio (PSRR), ensuring stable performance even with varying input voltages. The LM2940 is also designed with a low noise output, making it ideal for sensitive applications such as RF and audio devices.
The package type is TO-220, providing good thermal performance, and the device is compatible with a variety of capacitors, enhancing stability and transient response. Overall, the LM2940CSX-5.0 is suitable for powering microcontrollers, sensors, and other electronic circuits requiring regulated 5V power.

Features

The LM2940CSX-5.0 is a low-dropout (LDO) voltage regulator specifically designed for applications that require a stable 5V output. Key features include:
1. Output Voltage: Fixed output of 5V.
2. Low Dropout Voltage: Typically around 0.5V, allowing efficient operation with minimal voltage difference between input and output.
3. Current Capability: Provides up to 1A output current, suitable for various digital and analog circuits.
4. Thermal Overload Protection: Integrated thermal shutdown prevents damage from overheating.
5. Short-Circuit Protection: Safeguards the device against output short circuits, enhancing reliability.
6. Fast Transient Response: Ensures stable output during load changes.
7. Input Voltage Range: Operates from 6V to 26V input, accommodating a wide range of power sources.
8. Package: Offered in a TO-220 package for enhanced heat dissipation.
These features make the LM2940CSX-5.0 ideal for powering microcontrollers, sensors, and other low-voltage electronic devices.

Package

The LM2940CSX-5.0 comes in a TO-220 package type. This package features a heat sink capability, making it suitable for voltage regulator applications where thermal management is essential.

Pinout

The LM2940CSX-5.0 is a low dropout (LDO) voltage regulator with a pin count of 5. Its primary function is to provide a stable output voltage of 5.0V from a higher input voltage source, making it suitable for powering sensitive electronic devices.
The pinout is as follows:
1. Input (Vin): Connects to the input voltage source.
2. Ground (GND): Connects to the system ground.
3. Output (Vout): Provides a regulated output voltage of 5.0V.
4. Sense (Vout Sense): Used for remote voltage sensing to improve load regulation.
5. Shutdown (SHDN): Used to enable or disable the regulator.
The LM2940CSX-5.0 is designed for applications requiring low dropout voltage, high current capability, and good transient response. It also features built-in thermal shutdown and current limiting for protection.

Manufacturer

The LM2940CSX-5.0 is manufactured by Texas Instruments (TI), a prominent American technology company. Texas Instruments specializes in designing and manufacturing semiconductors and various integrated circuits (ICs), with a focus on analog electronics, digital signal processing, and embedded systems. Founded in 1930, TI is known for its innovation in the semiconductor industry, producing a wide range of products used in diverse applications, including consumer electronics, automotive systems, and industrial equipment. The LM2940CSX-5.0 is a low-dropout (LDO) voltage regulator, widely used in power management applications for its reliability and efficiency.

Application

The LM2940CSX-5.0 is a low-dropout (LDO) voltage regulator primarily used in automotive applications, battery-powered devices, and portable electronics. It provides a stable 5V output with low dropout voltage, making it ideal for powering microcontrollers, sensors, and other digital circuits. Its features support applications requiring low noise and high ripple rejection, such as audio equipment and communication devices. Additionally, it’s suitable for systems that require protection against reverse polarity and thermal overload.

Equivalent

Equivalent products to the LM2940CSX-5.0 include the LM2940-5.0, LT1086-5.0, and MCP1700-5002E. Additionally, consider the TPS76950 and MIC2940. Ensure to verify specifications such as output current, dropout voltage, and thermal performance for compatibility in your application.