사양
| 속성 | 가치 |
| Package / Case | Tape & Reel (TR),Cut Tape (CT),Bulk |
| Part Status | Not For New Designs |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 26V |
| Voltage - Output (Min/Fixed) | 3.3V |
| Voltage Dropout (Max) | 1V @ 50mA |
| Current - Output | 500mA |
| Current - Quiescent (Iq) | 2 mA |
| Current - Supply (Max) | 1.25 A |
| Protection Features | Over Temperature, Reverse Polarity, Short Circuit |
| Operating Temperature | -40°C ~ 125°C |
| Mounting Type | Surface Mount |
개요
Description
The LM2937ESX-3.3 is a low dropout voltage regulator designed to provide a 3.3V output from a higher voltage input. It is part of the LM2937 series, known for their reliable performance in various electronic applications. The device features a low dropout voltage of typically 0.5V at full load, making it efficient for battery-powered and other low-voltage systems.
This regulator offers a maximum output current of 500mA, suitable for powering microcontrollers, sensors, and other low-power circuits. It includes built-in protection features such as current limiting and thermal shutdown to prevent damage from overloads or overheating. The LM2937ESX-3.3 is also designed to be stable with a variety of output capacitors, providing flexibility in circuit design.
Packaged in a TO-263 surface-mount configuration, it facilitates easy integration into PCBs. The LM2937ESX-3.3 is valued for its robustness, low noise output, and high reliability, making it a popular choice in automotive, industrial, and consumer electronics applications.
This regulator offers a maximum output current of 500mA, suitable for powering microcontrollers, sensors, and other low-power circuits. It includes built-in protection features such as current limiting and thermal shutdown to prevent damage from overloads or overheating. The LM2937ESX-3.3 is also designed to be stable with a variety of output capacitors, providing flexibility in circuit design.
Packaged in a TO-263 surface-mount configuration, it facilitates easy integration into PCBs. The LM2937ESX-3.3 is valued for its robustness, low noise output, and high reliability, making it a popular choice in automotive, industrial, and consumer electronics applications.
Equivalent
The LM2937ESX-3.3 is a low-dropout (LDO) voltage regulator with a 3.3V output. Equivalent products include:
1. LD1117-3.3: Similar LDO with a 3.3V fixed output.
2. AMS1117-3.3: Another compatible LDO with 3.3V output.
3. MIC29302WT: Offers similar performance with high current output.
4. NCP1117ST33T3G: 3.3V LDO with comparable specifications.
Always verify the pin configuration and thermal characteristics for compatibility in your application.
1. LD1117-3.3: Similar LDO with a 3.3V fixed output.
2. AMS1117-3.3: Another compatible LDO with 3.3V output.
3. MIC29302WT: Offers similar performance with high current output.
4. NCP1117ST33T3G: 3.3V LDO with comparable specifications.
Always verify the pin configuration and thermal characteristics for compatibility in your application.
Features
The LM2937ESX-3.3 is a voltage regulator designed for a fixed 3.3V output. Here are its key features:
1. Output Current: It can deliver a continuous output current of up to 500mA.
2. Dropout Voltage: The regulator has a low dropout voltage, typically around 0.5V at full load, which allows for efficient operation under various conditions.
3. Input Voltage: The device operates with input voltages up to 26V.
4. Ripple Rejection: It offers a high ripple rejection ratio, enhancing output stability and reducing noise.
5. Protection Features: The regulator includes over-temperature and over-current protection, ensuring reliability and safety under fault conditions.
6. Quiescent Current: It features a low quiescent current, making it suitable for battery-operated devices.
7. Thermal Resistance: The package provides efficient thermal dissipation, maintaining stable operation under high current loads.
8. Package Options: The LM2937ESX-3.3 is available in a TO-263 surface-mount package, which is convenient for space-constrained applications.
These features make the LM2937ESX-3.3 suitable for various applications requiring stable 3.3V power supply regulation with robust performance.
1. Output Current: It can deliver a continuous output current of up to 500mA.
2. Dropout Voltage: The regulator has a low dropout voltage, typically around 0.5V at full load, which allows for efficient operation under various conditions.
3. Input Voltage: The device operates with input voltages up to 26V.
4. Ripple Rejection: It offers a high ripple rejection ratio, enhancing output stability and reducing noise.
5. Protection Features: The regulator includes over-temperature and over-current protection, ensuring reliability and safety under fault conditions.
6. Quiescent Current: It features a low quiescent current, making it suitable for battery-operated devices.
7. Thermal Resistance: The package provides efficient thermal dissipation, maintaining stable operation under high current loads.
8. Package Options: The LM2937ESX-3.3 is available in a TO-263 surface-mount package, which is convenient for space-constrained applications.
These features make the LM2937ESX-3.3 suitable for various applications requiring stable 3.3V power supply regulation with robust performance.
Pinout
The LM2937ESX-3.3 is a low dropout voltage regulator designed to provide a fixed output voltage of 3.3V. It comes in a TO-263 surface-mount package and has three pins. Here are the pin functions:
1. Input (Pin 1): This is the input pin where the voltage supply is connected. The input voltage should be higher than the desired 3.3V output to ensure proper regulation, typically above 4.5V for this device.
2. Ground (Pin 2): This pin serves as the ground reference for the regulator and is connected to the ground of the system.
3. Output (Pin 3): This pin provides the regulated 3.3V output voltage. It should be connected to the load that requires a stable 3.3V supply.
The LM2937ESX-3.3 is designed to offer high efficiency and low dropout voltage, making it suitable for powering 3.3V logic and microcontrollers in various applications.
1. Input (Pin 1): This is the input pin where the voltage supply is connected. The input voltage should be higher than the desired 3.3V output to ensure proper regulation, typically above 4.5V for this device.
2. Ground (Pin 2): This pin serves as the ground reference for the regulator and is connected to the ground of the system.
3. Output (Pin 3): This pin provides the regulated 3.3V output voltage. It should be connected to the load that requires a stable 3.3V supply.
The LM2937ESX-3.3 is designed to offer high efficiency and low dropout voltage, making it suitable for powering 3.3V logic and microcontrollers in various applications.
Manufacturer
The LM2937ESX-3.3 is manufactured by Texas Instruments. Texas Instruments (TI) is a global semiconductor company that designs and produces a wide range of analog and embedded processing chips. Founded in 1930 and headquartered in Dallas, Texas, TI is known for its innovations in the semiconductor industry, contributing to advancements in electronics and technology. The company serves various markets, including industrial, automotive, personal electronics, communications equipment, and enterprise systems, providing essential components that enable the functionality of a wide array of electronic devices.
Application
The LM2937ESX-3.3 is a low-dropout voltage regulator designed for applications requiring a stable 3.3V output. Key application areas include:
1. Consumer Electronics: Powers microprocessors and other digital components in devices like smartphones and tablets.
2. Automotive Systems: Suitable for powering sensors, communication devices, and control units in vehicles due to its wide input voltage range.
3. Industrial Equipment: Provides reliable power to sensors and controllers in automation and control systems.
4. Networking Devices: Used in routers, switches, and modems to ensure stable voltage for digital circuits.
5. Embedded Systems: Supports microcontrollers and peripheral devices in IoT and embedded applications.
Its low dropout voltage and reliable performance make it versatile for various electronic applications.
1. Consumer Electronics: Powers microprocessors and other digital components in devices like smartphones and tablets.
2. Automotive Systems: Suitable for powering sensors, communication devices, and control units in vehicles due to its wide input voltage range.
3. Industrial Equipment: Provides reliable power to sensors and controllers in automation and control systems.
4. Networking Devices: Used in routers, switches, and modems to ensure stable voltage for digital circuits.
5. Embedded Systems: Supports microcontrollers and peripheral devices in IoT and embedded applications.
Its low dropout voltage and reliable performance make it versatile for various electronic applications.
Package
The LM2937ESX-3.3 is a voltage regulator with an SOT-223 package type.
