規格
| 屬性 | 價值 |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Part Status | Active |
| Function | Step-Down |
| Output Configuration | Positive or Negative |
| Topology | Buck |
| Output Type | Fixed |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 7V |
| Voltage - Input (Max) | 40V |
| Voltage - Output (Min/Fixed) | 3.3V |
| Current - Output | 3A |
| Frequency - Switching | 52kHz |
| Synchronous Rectifier | No |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount |
概述
Description
The LM2576D2TR4-3.3G is a fixed output voltage version of the LM2576 series of monolithic integrated circuits that are designed for step-down (buck) voltage regulation. It is specifically set to provide a 3.3V output. This device is capable of driving a 3A load with excellent line and load regulation. Featuring a wide input voltage range from 4V to 40V, it is suitable for various applications including power supply designs for microprocessors and other digital circuits.
Key features include a high efficiency of up to 90%, low standby current, and a built-in thermal shutdown for over-temperature protection. The LM2576D2TR4-3.3G also has an internal frequency compensation and a fixed switching frequency of 52 kHz. It is housed in a TO-263 surface-mount package, making it convenient for PCB assembly. The device is also known for its simplicity of use, requiring minimal external components, which makes it an attractive choice for compact and cost-sensitive applications.
Key features include a high efficiency of up to 90%, low standby current, and a built-in thermal shutdown for over-temperature protection. The LM2576D2TR4-3.3G also has an internal frequency compensation and a fixed switching frequency of 52 kHz. It is housed in a TO-263 surface-mount package, making it convenient for PCB assembly. The device is also known for its simplicity of use, requiring minimal external components, which makes it an attractive choice for compact and cost-sensitive applications.
Equivalent
Equivalent products to the LM2576D2TR4-3.3G chip, which is a 3.3V output voltage regulator, include:
1. LM2576T-3.3 by Texas Instruments
2. MC34063 series for step-down applications
3. LM2596-3.3 by Texas Instruments
4. L4971 by STMicroelectronics
These alternatives offer similar functionalities and specifications for DC-DC step-down voltage regulation. Always verify specifications and pin compatibility before substituting.
1. LM2576T-3.3 by Texas Instruments
2. MC34063 series for step-down applications
3. LM2596-3.3 by Texas Instruments
4. L4971 by STMicroelectronics
These alternatives offer similar functionalities and specifications for DC-DC step-down voltage regulation. Always verify specifications and pin compatibility before substituting.
Features
The LM2576D2TR4-3.3G is a step-down voltage regulator designed for efficient power management in various applications. Key features include:
1. Output Voltage: Fixed 3.3V output, ideal for powering 3.3V logic circuits.
2. Input Voltage Range: Operates efficiently with an input voltage range of 4V to 40V.
3. Output Current: Supports up to 3A output current, suitable for medium power applications.
4. Efficiency: High efficiency, typically up to 90%, reducing heat and energy loss.
5. Switching Frequency: Operates at a fixed frequency of 52 kHz, minimizing external component size.
6. Thermal and Short-Circuit Protection: Features built-in thermal shutdown and current limit protection for enhanced reliability.
7. Package Type: Available in a TO-263 surface-mount package, facilitating easy integration onto PCBs.
8. Low Component Count: Simplifies design with minimal external components required.
9. Overvoltage Protection: Provides robust performance in versatile conditions.
These features make the LM2576D2TR4-3.3G suitable for use in battery chargers, distributed power systems, and other applications requiring reliable voltage conversion.
1. Output Voltage: Fixed 3.3V output, ideal for powering 3.3V logic circuits.
2. Input Voltage Range: Operates efficiently with an input voltage range of 4V to 40V.
3. Output Current: Supports up to 3A output current, suitable for medium power applications.
4. Efficiency: High efficiency, typically up to 90%, reducing heat and energy loss.
5. Switching Frequency: Operates at a fixed frequency of 52 kHz, minimizing external component size.
6. Thermal and Short-Circuit Protection: Features built-in thermal shutdown and current limit protection for enhanced reliability.
7. Package Type: Available in a TO-263 surface-mount package, facilitating easy integration onto PCBs.
8. Low Component Count: Simplifies design with minimal external components required.
9. Overvoltage Protection: Provides robust performance in versatile conditions.
These features make the LM2576D2TR4-3.3G suitable for use in battery chargers, distributed power systems, and other applications requiring reliable voltage conversion.
Pinout
The LM2576D2TR4-3.3G is a step-down (buck) voltage regulator designed to provide a fixed 3.3V output with an output current capability of up to 3A. It is a part of the LM2576 series, which is known for its efficiency and minimal external components.
The LM2576D2TR4-3.3G typically comes in a 5-pin TO-263 surface-mount package. Here is a brief overview of its pin functions:
1. VIN: Input voltage pin, where the unregulated input voltage is supplied.
2. Output: This pin is the regulated 3.3V output.
3. GND: Ground pin, common to both the input and output voltages.
4. Feedback (FB): This pin is used to set the output voltage and is internally connected to the output in fixed versions.
5. ON/OFF: Enable pin for the IC; when connected to ground, the regulator is enabled.
The LM2576 series is widely used in various applications for its efficiency, simplicity, and ease of use in power supply designs.
The LM2576D2TR4-3.3G typically comes in a 5-pin TO-263 surface-mount package. Here is a brief overview of its pin functions:
1. VIN: Input voltage pin, where the unregulated input voltage is supplied.
2. Output: This pin is the regulated 3.3V output.
3. GND: Ground pin, common to both the input and output voltages.
4. Feedback (FB): This pin is used to set the output voltage and is internally connected to the output in fixed versions.
5. ON/OFF: Enable pin for the IC; when connected to ground, the regulator is enabled.
The LM2576 series is widely used in various applications for its efficiency, simplicity, and ease of use in power supply designs.
Manufacturer
The LM2576D2TR4-3.3G is manufactured by ON Semiconductor. ON Semiconductor is a global supplier of semiconductor-based solutions, providing a wide range of energy-efficient power and signal management, logic, discrete, and custom devices for various applications. The company focuses on automotive, industrial, and internet of things (IoT) markets, among others, and is known for its commitment to providing innovative and sustainable solutions.
Application
The LM2576D2TR4-3.3G is a step-down voltage regulator commonly used in various applications requiring efficient power conversion. Key application areas include:
1. Power Supply Solutions: Used in DC-DC conversion for maintaining a stable 3.3V output.
2. Embedded Systems: Provides efficient power management for microcontrollers and digital circuits.
3. Consumer Electronics: Powers devices like routers, set-top boxes, and handheld gadgets.
4. Industrial Automation: Supports sensors and control systems with reliable voltage regulation.
5. Automotive Systems: Used in infotainment systems or other vehicle electronics.
Its efficiency and reliability make it suitable for applications where secure and consistent voltage levels are crucial.
1. Power Supply Solutions: Used in DC-DC conversion for maintaining a stable 3.3V output.
2. Embedded Systems: Provides efficient power management for microcontrollers and digital circuits.
3. Consumer Electronics: Powers devices like routers, set-top boxes, and handheld gadgets.
4. Industrial Automation: Supports sensors and control systems with reliable voltage regulation.
5. Automotive Systems: Used in infotainment systems or other vehicle electronics.
Its efficiency and reliability make it suitable for applications where secure and consistent voltage levels are crucial.
Package
The LM2576D2TR4-3.3G is a DC-DC step-down voltage regulator. It comes in a D2PAK (TO-263) surface-mount package.
