規格
| 屬性 | 價值 |
| 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 ~ 75V |
| Frequency - Switching | 100kHz ~ 1MHz |
| Duty Cycle(Max) | 100% |
| Synchronous Rectifier | Yes |
| Clock Sync | Yes |
| Control Features | Enable, Frequency Control, Power Good, Soft Start |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount, Wettable Flank |
概述
Description
The LM5145RGYR is a synchronous buck DC-DC controller from Texas Instruments, designed for step-down power conversion applications. It is part of the LM5145 series, which is known for its high efficiency and robust performance in powering complex systems. This controller can handle wide input voltage ranges, typically from 6 V to 75 V, making it suitable for a variety of industrial and communication applications.
Key features include a programmable switching frequency up to 1 MHz, enabling designers to optimize for size and efficiency. It also supports output currents up to 20 A or more, depending on external components. The LM5145RGYR incorporates advanced control schemes for transient response optimization and features like adjustable soft start, programmable current limit, and thermal protection to ensure reliable operation.
A slew rate control mechanism helps minimize electromagnetic interference, and the device's synchronous rectification enhances efficiency. The LM5145RGYR is available in a thermally enhanced 24-pin VQFN package, which aids in heat dissipation and compact design integration.
Key features include a programmable switching frequency up to 1 MHz, enabling designers to optimize for size and efficiency. It also supports output currents up to 20 A or more, depending on external components. The LM5145RGYR incorporates advanced control schemes for transient response optimization and features like adjustable soft start, programmable current limit, and thermal protection to ensure reliable operation.
A slew rate control mechanism helps minimize electromagnetic interference, and the device's synchronous rectification enhances efficiency. The LM5145RGYR is available in a thermally enhanced 24-pin VQFN package, which aids in heat dissipation and compact design integration.
Equivalent
The LM5145RGYR is a synchronous buck controller from Texas Instruments. Equivalent products may include the LT8705 from Analog Devices, the MAX17599 from Maxim Integrated, and the MP2965 from Monolithic Power Systems. These alternatives offer similar functionalities for high-efficiency, high-power DC-DC conversion applications. Always verify specific requirements like input voltage range, output current capability, and features to ensure compatibility.
Features
The LM5145RGYR is a synchronous buck controller designed for high-efficiency voltage regulation. Key features include:
1. Wide Input Voltage Range: It supports input voltages from 6V to 75V, making it suitable for various applications.
2. High-Side and Low-Side Drivers: Integrated high- and low-side drivers enable efficient power conversion with minimal external components.
3. Adjustable Switching Frequency: The switching frequency can be set from 100 kHz to 1 MHz to optimize size, efficiency, and performance.
4. Current Mode Control: Offers peak-current mode control for improved stability and transient response.
5. Adaptive Slope Compensation: Enhances performance in low duty cycle applications.
6. Programmable Soft-Start: Allows controlled ramp-up of output voltage to prevent inrush current.
7. Thermal Shutdown Protection: Protects the device from overheating due to excessive power dissipation.
8. Cycle-by-Cycle Current Limiting: Provides overcurrent protection to prevent damage during fault conditions.
9. Adjustable Output Voltage: Output voltage can be easily set according to design requirements.
10. Compact Package: Available in a small VQFN package for space-constrained designs.
These features make the LM5145RGYR suitable for industrial, automotive, and telecommunications applications.
1. Wide Input Voltage Range: It supports input voltages from 6V to 75V, making it suitable for various applications.
2. High-Side and Low-Side Drivers: Integrated high- and low-side drivers enable efficient power conversion with minimal external components.
3. Adjustable Switching Frequency: The switching frequency can be set from 100 kHz to 1 MHz to optimize size, efficiency, and performance.
4. Current Mode Control: Offers peak-current mode control for improved stability and transient response.
5. Adaptive Slope Compensation: Enhances performance in low duty cycle applications.
6. Programmable Soft-Start: Allows controlled ramp-up of output voltage to prevent inrush current.
7. Thermal Shutdown Protection: Protects the device from overheating due to excessive power dissipation.
8. Cycle-by-Cycle Current Limiting: Provides overcurrent protection to prevent damage during fault conditions.
9. Adjustable Output Voltage: Output voltage can be easily set according to design requirements.
10. Compact Package: Available in a small VQFN package for space-constrained designs.
These features make the LM5145RGYR suitable for industrial, automotive, and telecommunications applications.
Pinout
The LM5145RGYR is a synchronous buck controller from Texas Instruments, designed for step-down voltage applications. It is available in a 24-pin VQFN package. The device is typically used in high-performance applications that require efficient power conversion.
### Key Features and Functions:
- Vin Range: The LM5145RGYR supports a wide input voltage range, suitable for high-voltage applications.
- Controller Type: It is a synchronous buck controller, which enhances efficiency by utilizing both high-side and low-side MOSFETs.
- Switching Frequency: The device allows adjustable switching frequencies, catering to different efficiency and size requirements.
- Output: Capable of driving external MOSFETs to achieve the desired output voltage and current levels.
- Protection Features: Includes overcurrent protection, thermal shutdown, and under-voltage lockout to ensure robust and safe operation.
This controller is ideal for use in industrial, automotive, and communications equipment where efficient power management is crucial.
### Key Features and Functions:
- Vin Range: The LM5145RGYR supports a wide input voltage range, suitable for high-voltage applications.
- Controller Type: It is a synchronous buck controller, which enhances efficiency by utilizing both high-side and low-side MOSFETs.
- Switching Frequency: The device allows adjustable switching frequencies, catering to different efficiency and size requirements.
- Output: Capable of driving external MOSFETs to achieve the desired output voltage and current levels.
- Protection Features: Includes overcurrent protection, thermal shutdown, and under-voltage lockout to ensure robust and safe operation.
This controller is ideal for use in industrial, automotive, and communications equipment where efficient power management is crucial.
Manufacturer
The LM5145RGYR is manufactured by Texas Instruments, a global semiconductor company. Texas Instruments, commonly known as TI, is headquartered in Dallas, Texas. It designs and manufactures semiconductors and various integrated circuits, which are used in electronic devices across a wide array of industries, including automotive, industrial, personal electronics, communications equipment, and enterprise systems. TI is well-regarded for its analog and embedded processing products.
Application
The LM5145RGYR is a synchronous buck controller designed for high-efficiency, high-power applications. It is commonly used in areas such as telecommunications, data centers, power management systems, industrial power supplies, and automotive electronics. The controller is ideal for applications requiring step-down DC-DC conversion from high voltage inputs to low voltage outputs, supporting wide input voltage ranges and high current outputs. Its features, such as programmable switching frequency, adjustable soft-start, and comprehensive fault protection, make it suitable for powering microprocessors, FPGAs, ASICs, and other digital ICs in complex electronic systems.
Package
The LM5145RGYR is a buck controller IC from Texas Instruments, and it comes in a VQFN (Very Thin Quad Flat No-Lead) package. Specifically, it uses a 24-pin VQFN package, designed for efficient thermal performance and compact PCB layout.
