圖片僅供參考
規格
| 屬性 | 價值 |
| Brand | Texas Instruments |
| ProductType | Switching Voltage Regulators |
| Subcategory | PMIC - Power Management ICs |
| MountingStyle | SMD/SMT |
| Package/Case | POWERPAD-8 |
| Topology | Buck |
| Product | Voltage Regulators |
概述
Description
The LM5019MRX is a high-voltage, high-efficiency buck regulator designed for power management applications. It features an input voltage range of 4.5V to 75V, making it suitable for a variety of industrial, automotive, and telecommunications applications. The device integrates a 1.5A internal switch and offers a configurable output voltage, which can be adjusted from 1.2V to 60V using external resistors.
Key features include a switching frequency of up to 1MHz, enabling smaller inductors and capacitors for compact designs. The LM5019MRX also includes advanced protection features such as thermal shutdown, current limit, and under-voltage lockout, enhancing reliability in demanding environments. Its ability to operate in both continuous and pulse-skipping modes allows for improved efficiency at light loads.
With its robust design and versatility, the LM5019MRX is ideal for applications requiring efficient power conversion and regulation in high-voltage systems.
Key features include a switching frequency of up to 1MHz, enabling smaller inductors and capacitors for compact designs. The LM5019MRX also includes advanced protection features such as thermal shutdown, current limit, and under-voltage lockout, enhancing reliability in demanding environments. Its ability to operate in both continuous and pulse-skipping modes allows for improved efficiency at light loads.
With its robust design and versatility, the LM5019MRX is ideal for applications requiring efficient power conversion and regulation in high-voltage systems.
Equivalent
The LM5019MRX is a high-voltage, synchronous step-down regulator. Equivalent products include the LTC3780, TPS563201, and LM2596. For similar functionality in different packages, consider the MIC2126 or the LM2675. Always verify specifications and compatibility for your specific application.
Features
The LM5019MRX is a high-voltage, synchronous step-down (buck) regulator designed for industrial and automotive applications. Key features include:
1. Wide Input Voltage Range: Accepts input voltages from 4.5V to 75V, making it suitable for diverse power sources.
2. Output Current: Capable of delivering up to 1A of continuous output current.
3. Efficiency: High efficiency (up to 95%) reduces heat generation, enhancing reliability and performance.
4. Adjustable Output Voltage: The output voltage can be adjusted from 1.2V to 15V, allowing flexibility for various applications.
5. Synchronous Operation: Utilizes synchronous rectification to improve efficiency and reduce output ripple.
6. Integrated MOSFETs: Built-in power MOSFETs minimize component count and size.
7. Protection Features: Includes overcurrent protection, thermal shutdown, and UVLO (under-voltage lockout) for enhanced safety.
8. Compact Package: Offered in a thermally enhanced TSSOP-16 package, facilitating easier PCB layout.
These features make the LM5019MRX ideal for powering sensors, microcontrollers, and other electronic devices in demanding environments.
1. Wide Input Voltage Range: Accepts input voltages from 4.5V to 75V, making it suitable for diverse power sources.
2. Output Current: Capable of delivering up to 1A of continuous output current.
3. Efficiency: High efficiency (up to 95%) reduces heat generation, enhancing reliability and performance.
4. Adjustable Output Voltage: The output voltage can be adjusted from 1.2V to 15V, allowing flexibility for various applications.
5. Synchronous Operation: Utilizes synchronous rectification to improve efficiency and reduce output ripple.
6. Integrated MOSFETs: Built-in power MOSFETs minimize component count and size.
7. Protection Features: Includes overcurrent protection, thermal shutdown, and UVLO (under-voltage lockout) for enhanced safety.
8. Compact Package: Offered in a thermally enhanced TSSOP-16 package, facilitating easier PCB layout.
These features make the LM5019MRX ideal for powering sensors, microcontrollers, and other electronic devices in demanding environments.
Pinout
The LM5019MRX is a step-down (buck) voltage regulator with a pin count of 16. It is designed for high input voltage applications, offering features such as wide input voltage range, high efficiency, and adjustable output voltage.
### Pin Functionality:
1. VIN - Input voltage
2. SW - Switch node output
3. GND - Ground
4. BOOT - Bootstrap capacitor connection
5. CSN - Current sense negative
6. CSP - Current sense positive
7. COMP - Compensation network connection
8. Rset - Resistor connection for setting frequency
9. FREQ - Frequency selection
10. SS - Soft-start capacitor connection
11. EN - Enable pin
12. VOUT - Output voltage feedback
13. IMON - Current monitor output
14. AGND - Analog ground
15. PH - Phase node
16. TRK - Tracking pin for output voltage
The LM5019MRX is suitable for applications requiring a robust, efficient power supply solution.
### Pin Functionality:
1. VIN - Input voltage
2. SW - Switch node output
3. GND - Ground
4. BOOT - Bootstrap capacitor connection
5. CSN - Current sense negative
6. CSP - Current sense positive
7. COMP - Compensation network connection
8. Rset - Resistor connection for setting frequency
9. FREQ - Frequency selection
10. SS - Soft-start capacitor connection
11. EN - Enable pin
12. VOUT - Output voltage feedback
13. IMON - Current monitor output
14. AGND - Analog ground
15. PH - Phase node
16. TRK - Tracking pin for output voltage
The LM5019MRX is suitable for applications requiring a robust, efficient power supply solution.
Manufacturer
The LM5019MRX is manufactured by Texas Instruments (TI), a leading global semiconductor company. Founded in 1930, Texas Instruments is headquartered in Dallas, Texas, and specializes in the design and production of a wide range of electronic components, including analog, embedded processing, and digital signal processing (DSP) chips. The company serves various industries such as telecommunications, automotive, industrial, and consumer electronics. TI is particularly known for its innovation in power management solutions, which includes products like the LM5019MRX, a high-efficiency buck regulator designed for step-down voltage conversion applications. With a strong emphasis on research and development, Texas Instruments continues to be a key player in the semiconductor industry, providing advanced technology to meet the evolving needs of its customers.
Application
The LM5019MRX is a high-voltage step-down (buck) regulator primarily used in applications such as industrial power supplies, automotive systems, and telecom equipment. It operates efficiently in scenarios requiring 60V input and can provide regulated output for powering microcontrollers, sensors, and other electronic devices. Its ability to handle high input voltages makes it suitable for battery-operated equipment and renewable energy systems. Additionally, the LM5019MRX can be utilized in LED drivers and other applications where compact, high-efficiency power conversion is essential.
Package
The LM5019MRX is packaged in a small, thermally enhanced 8-pin MFP (Thin Shrink Small Outline Package) with a lead pitch of 0.65 mm. This package type is designed for efficient thermal dissipation and compact designs in power management applications.