사양
| 속성 | 가치 |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Series | SIMPLE SWITCHER® |
| Part Status | Obsolete |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Output Type | Fixed |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 4.5V |
| Voltage - Input (Max) | 40V |
| Voltage - Output (Min/Fixed) | 3.3V |
| Current - Output | 500mA |
| Frequency - Switching | 150kHz |
| Synchronous Rectifier | No |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount |
개요
Description
The LM2594MX-3.3 is a step-down (buck) voltage regulator designed by Texas Instruments. It is part of the LM2594 series, which is known for its efficient, simple-to-use, and versatile DC-DC converter capabilities. The "3.3" in its name indicates that this particular model outputs a regulated 3.3V DC voltage.
Key features of the LM2594MX-3.3 include an input voltage range from 4.5V to 40V, making it suitable for a wide variety of DC power sources, and a fixed output voltage of 3.3V with a load current capability of up to 500 mA. It operates at a switching frequency of 150 kHz, which allows the use of smaller filter components, thus saving space in circuit designs.
The regulator is designed for high efficiency, often around 85%, reducing heat dissipation and improving power management. It also includes functionalities such as thermal shutdown, current limiting, and a standby mode for low power consumption. These features make the LM2594MX-3.3 ideal for applications in battery-powered devices, industrial equipment, and consumer electronics.
Key features of the LM2594MX-3.3 include an input voltage range from 4.5V to 40V, making it suitable for a wide variety of DC power sources, and a fixed output voltage of 3.3V with a load current capability of up to 500 mA. It operates at a switching frequency of 150 kHz, which allows the use of smaller filter components, thus saving space in circuit designs.
The regulator is designed for high efficiency, often around 85%, reducing heat dissipation and improving power management. It also includes functionalities such as thermal shutdown, current limiting, and a standby mode for low power consumption. These features make the LM2594MX-3.3 ideal for applications in battery-powered devices, industrial equipment, and consumer electronics.
Equivalent
The LM2594MX-3.3 is a 3.3V, 0.5A step-down voltage regulator. Equivalent products include:
1. MC34063A: Though older, it can be configured for similar output.
2. L7805: A linear regulator, not a direct switch-mode equivalent but can be used if efficiency is less critical.
3. LM2670: Offers similar functionality with potentially higher current.
4. LT1763: A low dropout regulator for lower currents.
Always check specifications to ensure compatibility with your requirements.
1. MC34063A: Though older, it can be configured for similar output.
2. L7805: A linear regulator, not a direct switch-mode equivalent but can be used if efficiency is less critical.
3. LM2670: Offers similar functionality with potentially higher current.
4. LT1763: A low dropout regulator for lower currents.
Always check specifications to ensure compatibility with your requirements.
Features
The LM2594MX-3.3 is a step-down voltage regulator designed for efficient power conversion. Key features include:
1. Output Voltage: Provides a fixed output voltage of 3.3V.
2. Input Voltage Range: Can handle input voltages from 4.5V to 40V, making it versatile for various applications.
3. Output Current: Capable of delivering up to 0.5A of output current.
4. Efficiency: Designed for high efficiency, often over 80%, depending on load and input voltage conditions.
5. Switching Frequency: Operates at a fixed 150 kHz switching frequency to minimize external component size.
6. Thermal Shutdown: Includes a thermal shutdown feature to protect the device in case of overheating.
7. Internal Frequency Compensation: Simplifies the design by eliminating the need for external frequency compensation components.
8. Short-Circuit Protection: Built-in protection to prevent damage in case of output short circuit.
9. Package: Available in an 8-pin SOIC package for ease of use in various designs.
10. Minimal External Components: Requires only a few external components for operation, reducing overall design complexity and cost.
These features make the LM2594MX-3.3 suitable for various power supply applications in consumer electronics, industrial equipment, and more.
1. Output Voltage: Provides a fixed output voltage of 3.3V.
2. Input Voltage Range: Can handle input voltages from 4.5V to 40V, making it versatile for various applications.
3. Output Current: Capable of delivering up to 0.5A of output current.
4. Efficiency: Designed for high efficiency, often over 80%, depending on load and input voltage conditions.
5. Switching Frequency: Operates at a fixed 150 kHz switching frequency to minimize external component size.
6. Thermal Shutdown: Includes a thermal shutdown feature to protect the device in case of overheating.
7. Internal Frequency Compensation: Simplifies the design by eliminating the need for external frequency compensation components.
8. Short-Circuit Protection: Built-in protection to prevent damage in case of output short circuit.
9. Package: Available in an 8-pin SOIC package for ease of use in various designs.
10. Minimal External Components: Requires only a few external components for operation, reducing overall design complexity and cost.
These features make the LM2594MX-3.3 suitable for various power supply applications in consumer electronics, industrial equipment, and more.
Pinout
The LM2594MX-3.3 is a step-down voltage regulator with a 5-pin configuration. Here are the pin functions:
1. Vin (Pin 1): This is the input voltage pin where the unregulated input is supplied. The voltage range is typically between 4.5V and 40V.
2. Output (Pin 2): This pin provides the regulated output voltage, which is fixed at 3.3V for this specific model.
3. Ground (Pin 3): This is the ground pin and serves as the return path for both the input and output voltages.
4. Feedback (Pin 4): This pin is used to sense the output voltage to maintain regulation. For the fixed 3.3V version, it's internally connected to the output.
5. ON/OFF (Pin 5): This pin is used to enable or disable the regulator. Bringing this pin low will disable the device, reducing the current draw to a few microamperes.
The LM2594MX-3.3 is commonly used in applications requiring efficient power conversion from a higher voltage to 3.3V, offering features like low dropout and high efficiency.
1. Vin (Pin 1): This is the input voltage pin where the unregulated input is supplied. The voltage range is typically between 4.5V and 40V.
2. Output (Pin 2): This pin provides the regulated output voltage, which is fixed at 3.3V for this specific model.
3. Ground (Pin 3): This is the ground pin and serves as the return path for both the input and output voltages.
4. Feedback (Pin 4): This pin is used to sense the output voltage to maintain regulation. For the fixed 3.3V version, it's internally connected to the output.
5. ON/OFF (Pin 5): This pin is used to enable or disable the regulator. Bringing this pin low will disable the device, reducing the current draw to a few microamperes.
The LM2594MX-3.3 is commonly used in applications requiring efficient power conversion from a higher voltage to 3.3V, offering features like low dropout and high efficiency.
Manufacturer
The LM2594MX-3.3 is manufactured by Texas Instruments (TI). Texas Instruments is a global semiconductor company that designs and manufactures a wide range of electronic components, including integrated circuits and embedded processors. The company is well-known for its innovations in analog and digital signal processing, power management, and wireless technology. Texas Instruments serves various industries, including automotive, industrial, consumer electronics, communications equipment, and enterprise systems. Its products are used in numerous applications, from everyday electronic devices to complex industrial machinery. TI is recognized for its commitment to innovation, quality, and customer support.
Application
The LM2594MX-3.3 is a step-down voltage regulator used in various applications due to its efficiency and reliability. Common application areas include:
1. Power Supply Solutions: Used in DC/DC conversion to provide a stable 3.3V output for powering microcontrollers and digital circuits.
2. Embedded Systems: Supports low-power devices and components in embedded systems.
3. Consumer Electronics: Powers components in devices like routers, set-top boxes, and portable gadgets.
4. Industrial Equipment: Ensures reliable power delivery in automation and control systems.
5. Communication Devices: Supports stable power for networking and telecommunications equipment.
These applications benefit from its simplicity, efficiency, and low component count.
1. Power Supply Solutions: Used in DC/DC conversion to provide a stable 3.3V output for powering microcontrollers and digital circuits.
2. Embedded Systems: Supports low-power devices and components in embedded systems.
3. Consumer Electronics: Powers components in devices like routers, set-top boxes, and portable gadgets.
4. Industrial Equipment: Ensures reliable power delivery in automation and control systems.
5. Communication Devices: Supports stable power for networking and telecommunications equipment.
These applications benefit from its simplicity, efficiency, and low component count.
Package
The LM2594MX-3.3 is a step-down voltage regulator from Texas Instruments. It is typically available in a surface-mount package type known as SOIC-8 (Small Outline Integrated Circuit with 8 pins).
