Спецификации
| Атрибут | Ценность |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| Series | SIMPLE SWITCHER® |
| ProductStatus | Obsolete |
| Function | Step-Down |
| OutputConfiguration | Positive |
| Topology | Buck |
| OutputType | Adjustable |
| NumberofOutputs | 1 |
| Voltage-Input(Min) | 6V |
| Voltage-Input(Max) | 75V |
| Voltage-Output(Min/Fixed) | 1.225V |
| Voltage-Output(Max) | 70V |
| Current-Output | 3A |
| Frequency-Switching | 50kHz ~ 500kHz |
| SynchronousRectifier | No |
| OperatingTemperature | -40°C ~ 125°C (TJ) |
| MountingType | Surface Mount |
| Package/Case | 20-PowerTSSOP (0.173, 4.40mm Width) |
Обзор
Description
The LM5576MHX is a monolithic integrated circuit designed for high-efficiency step-down (buck) power conversion applications. It is part of the LM557x series, which is tailored for industrial and automotive systems. The LM5576MHX can handle input voltages up to 75V and deliver output currents up to 3A, making it suitable for a wide range of applications that require robust voltage regulation.
Key features include a wide input voltage range, adjustable output voltage, and a high switching frequency, which allows for the use of smaller external components. The device incorporates various protection mechanisms, such as thermal shutdown, cycle-by-cycle current limiting, and under-voltage lockout, ensuring reliable operation under different conditions.
The LM5576MHX comes in a thermally enhanced HTSSOP package, offering improved heat dissipation. This IC is ideal for use in distributed power systems, automotive power regulation, and industrial equipment that necessitate efficient power management and robust performance.
Key features include a wide input voltage range, adjustable output voltage, and a high switching frequency, which allows for the use of smaller external components. The device incorporates various protection mechanisms, such as thermal shutdown, cycle-by-cycle current limiting, and under-voltage lockout, ensuring reliable operation under different conditions.
The LM5576MHX comes in a thermally enhanced HTSSOP package, offering improved heat dissipation. This IC is ideal for use in distributed power systems, automotive power regulation, and industrial equipment that necessitate efficient power management and robust performance.
Equivalent
The LM5576MHX is a high-voltage switching regulator. Some equivalent products include:
1. LM5575 - Similar series with slight variations in specifications.
2. LM5007 - Similar high-voltage step-down regulator with different current ratings.
3. LT3748 - High-voltage step-down converter from Analog Devices.
4. TPS40210 - A buck controller with high voltage input from Texas Instruments.
Ensure compatibility with your specific application requirements like voltage, current ratings, and package type before selecting an equivalent.
1. LM5575 - Similar series with slight variations in specifications.
2. LM5007 - Similar high-voltage step-down regulator with different current ratings.
3. LT3748 - High-voltage step-down converter from Analog Devices.
4. TPS40210 - A buck controller with high voltage input from Texas Instruments.
Ensure compatibility with your specific application requirements like voltage, current ratings, and package type before selecting an equivalent.
Features
The LM5576MHX is a step-down switching voltage regulator designed for efficiency and versatility. It operates with an input voltage range of 6V to 75V, making it suitable for a broad range of applications. The device delivers an adjustable output voltage with a precision of ±1.5% over temperature. It supports a maximum output current of 3A. The LM5576MHX features an integrated high-side N-channel MOSFET and uses a current-mode control architecture, which improves transient response and simplifies loop compensation. Other key features include programmable switching frequency up to 500 kHz, an adjustable soft-start to limit inrush current, and cycle-by-cycle current limiting for protection. It also includes thermal shutdown protection and an enable pin for easy power sequencing. The device is packaged in a 20-pin thermally enhanced TSSOP, which offers efficient heat dissipation. These features make the LM5576MHX suitable for industrial, automotive, and distributed power systems where high efficiency and robustness are required.
Pinout
The LM5576MHX is a step-down switching voltage regulator integrated circuit. It is designed to provide high-efficiency power conversion. The IC comes in a 20-pin TSSOP (Thin Shrink Small Outline Package) with an exposed pad for heat dissipation.
Key functions of the LM5576 include wide input voltage range, adjustable output voltage, and high switching frequency. It features a voltage-mode control with an integrated high-side N-channel MOSFET and can deliver up to 3A of continuous output current. Other notable features include a programmable switching frequency, cycle-by-cycle current limiting, thermal shutdown, and an enable/disable function.
The pin functions typically include VIN for input voltage, SW for the switching node, FB for feedback to set the output voltage, COMP for compensation network connection, SS for soft-start, and various other pins for functions like synchronization, enable control, and ground connections.
For precise pin assignments and detailed functionality, referring to the official datasheet is recommended.
Key functions of the LM5576 include wide input voltage range, adjustable output voltage, and high switching frequency. It features a voltage-mode control with an integrated high-side N-channel MOSFET and can deliver up to 3A of continuous output current. Other notable features include a programmable switching frequency, cycle-by-cycle current limiting, thermal shutdown, and an enable/disable function.
The pin functions typically include VIN for input voltage, SW for the switching node, FB for feedback to set the output voltage, COMP for compensation network connection, SS for soft-start, and various other pins for functions like synchronization, enable control, and ground connections.
For precise pin assignments and detailed functionality, referring to the official datasheet is recommended.
Manufacturer
The LM5576MHX is manufactured by Texas Instruments Incorporated (TI). Texas Instruments is an American technology company that designs and manufactures semiconductors and various integrated circuits, which it sells to electronics designers and manufacturers globally. TI is widely recognized for its innovations in analog technology, embedded processing, and digital signal processing, and it supplies components to a broad range of industries, including automotive, industrial, personal electronics, and communications equipment. The company is known for its robust portfolio of products, which supports a wide array of applications and solutions, contributing significantly to the electronics ecosystem.
Application
The LM5576MHX is a high-voltage switching regulator designed for efficient power management and voltage conversion. Its application areas include:
1. Telecommunications: Utilized in base stations and network equipment for stable power supply.
2. Industrial Automation: Provides reliable voltage regulation for control systems and machinery.
3. Automotive Electronics: Powers infotainment systems, lighting, and engine control units.
4. Consumer Electronics: Used in power adapters and battery chargers.
5. Aerospace and Defense: Ensures robust performance in avionics and defense communication systems.
6. Renewable Energy Systems: Manages power conversion in solar inverters and wind turbines.
The LM5576MHX is valued for its wide input voltage range, efficiency, and reliability, making it suitable for diverse high-voltage applications.
1. Telecommunications: Utilized in base stations and network equipment for stable power supply.
2. Industrial Automation: Provides reliable voltage regulation for control systems and machinery.
3. Automotive Electronics: Powers infotainment systems, lighting, and engine control units.
4. Consumer Electronics: Used in power adapters and battery chargers.
5. Aerospace and Defense: Ensures robust performance in avionics and defense communication systems.
6. Renewable Energy Systems: Manages power conversion in solar inverters and wind turbines.
The LM5576MHX is valued for its wide input voltage range, efficiency, and reliability, making it suitable for diverse high-voltage applications.
Package
The LM5576MHX is a step-down switching voltage regulator from Texas Instruments. It is packaged in a 20-pin, thermally enhanced, HTSSOP (Heat-Slug Thin Shrink Small Outline Package) format, which assists in better thermal performance and efficient heat dissipation.
