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LM25148RGYR
42-V SYNCHRONOUS BUCK DC/DC CONT
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規格
| 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) | 3.5V ~ 42V |
| Frequency - Switching | 100kHz ~ 2.2MHz |
| Duty Cycle (Max) | 100% |
| Synchronous Rectifier | Yes |
| Clock Sync | Yes |
| Control Features | Current Limit, Power Good, Ramp, Soft Start |
| Operating Temperature | -40°C ~ 125°C |
| Mounting Type | Surface Mount |
| Package / Case | 24-VFQFN Exposed Pad |
| Supplier Device Package | 24-VQFN (5.5x3.5) |
| Base Product Number | LM25148 |
概述
Description
The LM25148RGYR is a step-down (buck) DC-DC converter from Texas Instruments, designed to efficiently convert higher input voltages to lower output voltages. It features an integrated power switch and is capable of delivering up to 3A of output current. The device operates in a wide input voltage range, typically from 4.5V to 60V, making it suitable for various applications, including industrial, automotive, and communication systems.
Key features include adjustable output voltage, high efficiency (up to 95%), and a range of protection mechanisms like overcurrent and thermal shutdown. The LM25148RGYR also supports a frequency of up to 1MHz, allowing for smaller external components and reduced PCB space.
It operates in both pulse-width modulation (PWM) and pulse-frequency modulation (PFM) modes, enhancing efficiency under varying load conditions. Overall, it's a versatile and robust solution for power management in diverse electronic applications.
Key features include adjustable output voltage, high efficiency (up to 95%), and a range of protection mechanisms like overcurrent and thermal shutdown. The LM25148RGYR also supports a frequency of up to 1MHz, allowing for smaller external components and reduced PCB space.
It operates in both pulse-width modulation (PWM) and pulse-frequency modulation (PFM) modes, enhancing efficiency under varying load conditions. Overall, it's a versatile and robust solution for power management in diverse electronic applications.
Features
The LM25148RGYR is a synchronous buck converter designed for high-efficiency DC-DC voltage regulation. Key features include:
1. Input Voltage Range: Operates from 4.5V to 60V, making it suitable for various applications.
2. Output Current: Capable of delivering up to 3A output current.
3. High Efficiency: Designed for high efficiency (up to 95%) to minimize power loss and heat generation.
4. Adjustable Output Voltage: The output voltage can be set from 0.8V to 5V using external resistors.
5. Integrated High/Low Side Switches: Reduces the need for external components, simplifying design.
6. Compensation Circuit: Includes a built-in compensation circuit for improved stability and transient response.
7. Switching Frequency: Typically operates at a frequency of 300 kHz, allowing for smaller inductor and capacitor sizes.
8. Thermal Shutdown and Overcurrent Protection: Provides built-in protection features to enhance reliability.
These features make the LM25148RGYR suitable for applications like industrial power supplies, telecom equipment, and battery-powered devices.
1. Input Voltage Range: Operates from 4.5V to 60V, making it suitable for various applications.
2. Output Current: Capable of delivering up to 3A output current.
3. High Efficiency: Designed for high efficiency (up to 95%) to minimize power loss and heat generation.
4. Adjustable Output Voltage: The output voltage can be set from 0.8V to 5V using external resistors.
5. Integrated High/Low Side Switches: Reduces the need for external components, simplifying design.
6. Compensation Circuit: Includes a built-in compensation circuit for improved stability and transient response.
7. Switching Frequency: Typically operates at a frequency of 300 kHz, allowing for smaller inductor and capacitor sizes.
8. Thermal Shutdown and Overcurrent Protection: Provides built-in protection features to enhance reliability.
These features make the LM25148RGYR suitable for applications like industrial power supplies, telecom equipment, and battery-powered devices.
Package
The LM25148RGYR is packaged in a VQFN (Very Thin Quad Flat No-lead) format, specifically a 5mm x 5mm package. This package type is designed for efficient thermal performance and space-saving in electronic applications.
Pinout
The LM25148RGYR is a high-performance step-down voltage regulator IC with a total pin count of 32. It is primarily used in power management applications, offering features such as high efficiency, adjustable output voltage, and comprehensive protection mechanisms.
Key pin functions include:
1. VIN: Input voltage supply.
2. GND: Ground reference.
3. SW: Switch node connected to the inductor.
4. VOUT: Output voltage.
5. COMP: Compensation network connection for stability.
6. CSN/ CSP: Current sense pins for overcurrent protection.
7. EN: Enable pin to turn the regulator on/off.
8. FB: Feedback pin for voltage regulation.
9. RT: Frequency setting using an external resistor.
10. PG: Power good signal for monitoring output status.
This device is designed for applications requiring high efficiency and compact size, making it suitable for a variety of modern electronic devices.
Key pin functions include:
1. VIN: Input voltage supply.
2. GND: Ground reference.
3. SW: Switch node connected to the inductor.
4. VOUT: Output voltage.
5. COMP: Compensation network connection for stability.
6. CSN/ CSP: Current sense pins for overcurrent protection.
7. EN: Enable pin to turn the regulator on/off.
8. FB: Feedback pin for voltage regulation.
9. RT: Frequency setting using an external resistor.
10. PG: Power good signal for monitoring output status.
This device is designed for applications requiring high efficiency and compact size, making it suitable for a variety of modern electronic devices.
Manufacturer
The LM25148RGYR is manufactured by Texas Instruments (TI), a leading semiconductor company. Texas Instruments specializes in the design and production of a wide range of electronic components, including analog and embedded processing devices. The company is well-known for its innovation in the field of integrated circuits and has a strong presence in various markets such as automotive, industrial, communications, and consumer electronics. TI focuses on providing technology solutions that enhance the performance and efficiency of electronic systems, making it a key player in the global semiconductor industry.
Application
The LM25148RGYR is a high-performance buck regulator, primarily used in applications such as power management for industrial systems, telecommunications, automotive electronics, and consumer devices. Its features make it suitable for powering microcontrollers, FPGAs, and other digital circuits by providing efficient voltage regulation. Additionally, it supports various power supply designs, including point-of-load converters and battery-powered applications.
Equivalent
The LM25148RGYR is a synchronous step-down regulator. Equivalent products include the TPS563201, LTC3861, and the MP1584. These alternatives provide similar voltage regulation features, efficiency levels, and current handling capabilities. Always verify specifications for specific applications.
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