사양
| 속성 | 가치 |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Part Status | Active |
| Output Type | Transistor Driver |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Number of Outputs | 1 |
| Output Phases | 1 |
| Voltage - Supply (Vcc/Vdd) | 6V ~ 42V |
| Frequency - Switching | 100kHz ~ 1MHz |
| Synchronous Rectifier | Yes |
| Clock Sync | Yes |
| Control Features | Enable, Frequency Control, Ramp, Soft Start |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount, Wettable Flank |
개요
Description
The LM25145RGYR is a synchronous buck controller from Texas Instruments, designed for high-performance, efficient power conversion in various applications. It supports wide input voltage ranges and is suitable for use in industrial, automotive, and telecommunication systems. Key features include peak current mode control, adjustable frequency, and a programmable output voltage, allowing for precise power management and optimization.
The controller includes features such as an adjustable switching frequency, voltage mode control with input feed-forward, and a robust protection mechanism that includes overvoltage, undervoltage, overcurrent, and thermal shutdown protections. This makes the LM25145RGYR ideal for creating reliable power supply designs.
Additionally, the LM25145RGYR provides flexibility with its soft-start feature and adjustable current limit, which are beneficial for minimizing inrush current and ensuring smooth operation during startup. The device's efficiency is further enhanced by its synchronous rectification capability, reducing power losses. Overall, the LM25145RGYR is a versatile and robust solution for demanding power supply applications, ensuring stable and efficient power delivery.
The controller includes features such as an adjustable switching frequency, voltage mode control with input feed-forward, and a robust protection mechanism that includes overvoltage, undervoltage, overcurrent, and thermal shutdown protections. This makes the LM25145RGYR ideal for creating reliable power supply designs.
Additionally, the LM25145RGYR provides flexibility with its soft-start feature and adjustable current limit, which are beneficial for minimizing inrush current and ensuring smooth operation during startup. The device's efficiency is further enhanced by its synchronous rectification capability, reducing power losses. Overall, the LM25145RGYR is a versatile and robust solution for demanding power supply applications, ensuring stable and efficient power delivery.
Equivalent
The LM25145RGYR is a synchronous buck controller. Equivalent products include the TPS40140 from Texas Instruments, LTC7800 from Analog Devices, and the MAX17503 from Maxim Integrated. Specifications like input voltage range, switching frequency, and output current should be compared to ensure suitability for your application. Always check the latest datasheets and cross-reference tools from manufacturers for compatibility and updates.
Features
The LM25145RGYR is a synchronous buck DC-DC controller designed for high efficiency and performance in power supply applications. Key features include:
1. Wide Input Voltage Range: Operates effectively from 6 V to 42 V, suitable for a variety of input sources.
2. Adjustable Output Voltage: Provides a wide output range down to 0.8 V, facilitating diverse application needs.
3. Synchronous Rectification: Enhances efficiency by reducing power losses during rectification.
4. Current Mode Control: Offers fast transient response and easy loop compensation.
5. Programmable Switching Frequency: Adjustable from 100 kHz to 1 MHz, allowing optimization of efficiency and size.
6. Optional Diode Emulation Mode: Improves light-load efficiency via reduced switching losses.
7. Precision Enable Pin: Ensures accurate control over the startup sequence.
8. Integrated Bootstrap Diode: Simplifies the external circuit design.
9. Protection Features: Includes undervoltage lockout, overvoltage protection, and current limiting for enhanced reliability.
10. Thermal Shutdown: Protects the device from overheating, ensuring long-term durability.
These features make the LM25145RGYR suitable for automotive, industrial, and general-purpose power conversion applications.
1. Wide Input Voltage Range: Operates effectively from 6 V to 42 V, suitable for a variety of input sources.
2. Adjustable Output Voltage: Provides a wide output range down to 0.8 V, facilitating diverse application needs.
3. Synchronous Rectification: Enhances efficiency by reducing power losses during rectification.
4. Current Mode Control: Offers fast transient response and easy loop compensation.
5. Programmable Switching Frequency: Adjustable from 100 kHz to 1 MHz, allowing optimization of efficiency and size.
6. Optional Diode Emulation Mode: Improves light-load efficiency via reduced switching losses.
7. Precision Enable Pin: Ensures accurate control over the startup sequence.
8. Integrated Bootstrap Diode: Simplifies the external circuit design.
9. Protection Features: Includes undervoltage lockout, overvoltage protection, and current limiting for enhanced reliability.
10. Thermal Shutdown: Protects the device from overheating, ensuring long-term durability.
These features make the LM25145RGYR suitable for automotive, industrial, and general-purpose power conversion applications.
Pinout
The LM25145RGYR is a 28-pin integrated circuit typically packaged in a VQFN (Very Thin Quad Flat No-Lead) format. This device is a synchronous buck controller designed for high-efficiency step-down DC-DC conversion. It is part of Texas Instruments' family of controllers intended for various power management applications.
The primary functions of the LM25145 include:
1. Synchronous buck conversion, which enhances efficiency by using both high-side and low-side MOSFETs.
2. Wide input voltage range support, allowing it to be used in various power supply configurations.
3. Advanced protection features, such as overcurrent protection, output overvoltage protection, and thermal shutdown.
4. Adjustable switching frequency, providing flexibility in optimizing performance for specific applications.
5. Current-mode control architecture, which offers excellent line and load regulation.
These features make the LM25145 suitable for use in computing, telecommunications, and industrial applications where efficient power conversion is critical.
The primary functions of the LM25145 include:
1. Synchronous buck conversion, which enhances efficiency by using both high-side and low-side MOSFETs.
2. Wide input voltage range support, allowing it to be used in various power supply configurations.
3. Advanced protection features, such as overcurrent protection, output overvoltage protection, and thermal shutdown.
4. Adjustable switching frequency, providing flexibility in optimizing performance for specific applications.
5. Current-mode control architecture, which offers excellent line and load regulation.
These features make the LM25145 suitable for use in computing, telecommunications, and industrial applications where efficient power conversion is critical.
Manufacturer
The LM25145RGYR is manufactured by Texas Instruments Incorporated. Texas Instruments, commonly known as TI, is an American technology company that designs and manufactures semiconductors and various integrated circuits, which it sells to electronics designers and manufacturers globally. It is one of the top semiconductor companies in the world, known for its innovation in analog chips and embedded processors, which are integral to a wide range of electronic systems. TI's products are used in various applications, including industrial, automotive, personal electronics, and communications equipment, among others.
Application
The LM25145RGYR is a synchronous buck controller designed for high-efficiency step-down voltage regulation. Key application areas include:
1. Telecommunications: Provides efficient power conversion in base stations and networking equipment.
2. Industrial Automation: Powers control systems, sensors, and actuators with precise voltage regulation.
3. Automotive Systems: Used in infotainment systems, ADAS, and other electronic control units.
4. Data Centers: Supports server and storage solutions with high-current power needs.
5. Consumer Electronics: Powers devices like smart TVs and set-top boxes.
6. Aerospace and Defense: Suitable for avionics and other mission-critical electronics requiring reliable power management.
Its versatility and high efficiency make it suitable for applications requiring robust power management solutions.
1. Telecommunications: Provides efficient power conversion in base stations and networking equipment.
2. Industrial Automation: Powers control systems, sensors, and actuators with precise voltage regulation.
3. Automotive Systems: Used in infotainment systems, ADAS, and other electronic control units.
4. Data Centers: Supports server and storage solutions with high-current power needs.
5. Consumer Electronics: Powers devices like smart TVs and set-top boxes.
6. Aerospace and Defense: Suitable for avionics and other mission-critical electronics requiring reliable power management.
Its versatility and high efficiency make it suitable for applications requiring robust power management solutions.
Package
The LM25145RGYR is packaged in a VQFN (Very Thin Quad Flat No-Lead) package, specifically a WQFN-24 (4x4) with a thermal pad. This package type is suitable for surface-mount technology, providing efficient thermal performance and space-saving attributes for circuit designs.
