LMR51450FNDRRR

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LMR51450FNDRRR

IC REG BUCK ADJ 5A 12WSON

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Спецификации

Part Status Active
Function Step-Down
Output Configuration Positive
Topology Buck
Output Type Adjustable
Number of Outputs 1
Voltage - Input (Min) 4V
Voltage - Input (Max) 36V
Voltage - Output (Min/Fixed) 0.8V
Voltage - Output (Max) 28V
Current - Output 5A
Frequency - Switching 200kHz ~ 1.1MHz
Synchronous Rectifier Yes
Operating Temperature -40°C ~ 150°C (TJ)
Mounting Type Surface Mount
Package / Case 12-WFDFN Exposed Pad
Supplier Device Package 12-WSON (3x3)
Base Product Number LMR51450

Обзор

Description

The LMR51450FNDRRR is a high-efficiency step-down (buck) voltage regulator from Texas Instruments. It is designed to convert a higher input voltage into a lower output voltage, making it suitable for various applications including power management in consumer electronics, industrial systems, and battery-operated devices. The regulator features a wide input voltage range, typically from 4.5V to 60V, allowing it to handle various power sources.
Key specifications include a maximum output current of 5A, a low quiescent current, and high efficiency up to 95%. The device also includes built-in protection features such as thermal shutdown and overcurrent protection, ensuring reliable operation under varying conditions. The LMR51450FNDRRR is available in a compact package, facilitating easy integration into space-constrained designs.
Overall, it is a robust solution for designers seeking a reliable and efficient power conversion component. For detailed application information, circuit designs, and performance characteristics, refer to the manufacturer's datasheet.

Features

The LMR51450FNDRRR is a high-performance buck regulator from Texas Instruments designed for efficient power conversion. Key features include:
1. Input Voltage Range: Operates from 4.5V to 60V, suitable for a wide range of applications.
2. Output Voltage: Adjustable output voltage from 0.8V to 5V.
3. High Efficiency: Offers up to 95% efficiency, reducing heat generation and improving performance.
4. Output Current: Delivers up to 5A continuous output current.
5. Built-in Compensation: Integrated loop compensation simplifies design.
6. Switching Frequency: Fixed frequency operation at 500 kHz, allowing for smaller inductor and capacitor size.
7. Overcurrent Protection: Features built-in current limit to protect against overload conditions.
8. Thermal Shutdown: Includes thermal protection to prevent overheating.
9. Package: Available in a compact 16-pin HTQFP package, facilitating easy integration into various applications.
These features make the LMR51450FNDRRR suitable for industrial, automotive, and communication applications requiring reliable and efficient power management.

Package

The LMR51450FNDRRR is packaged in a VQFN (Very Thin Quad Flat No-lead) format, specifically a 16-pin VQFN package. This type of packaging provides a compact size and efficient thermal performance suitable for power management applications.

Pinout

The LMR51450FNDRRR is a step-down (buck) voltage regulator from Texas Instruments. It features a pin count of 16 pins.
The primary functions of its pins include:
1. VIN: Input voltage supply.
2. GND: Ground connection.
3. SW: Switching node for the inductor.
4. VOUT: Regulated output voltage.
5. COMP: Compensation network connection.
6. FB: Feedback voltage pin for voltage regulation.
7. RAMP: Connection for a ramp generator.
8. SS: Soft-start control pin.
9. MODE: Mode selection for operation (PWM or PFM).
10. ILIM: Current limit setting.
11. NC: No connect.
12. PGND: Power ground.
13. CSN: Current sense negative.
14. CSP: Current sense positive.
15. RT: External resistor for frequency setting.
16. EN: Enable pin for turning the device on and off.
This IC is designed for efficiency and provides a compact solution for DC-DC conversion in various applications.

Manufacturer

The LMR51450FNDRRR is manufactured by Texas Instruments (TI), a leading American technology company. Texas Instruments specializes in designing and manufacturing semiconductors and various integrated circuits (ICs). The company is well-known for its innovations in analog and embedded processing, providing a wide range of products for numerous applications, including automotive, industrial, communications, and consumer electronics. TI's focus on analog technology allows it to create solutions that optimize performance and efficiency in electronic devices.

Application

The LMR51450FNDRRR is a step-down voltage regulator primarily used in applications such as power management for telecommunications, industrial automation, automotive systems, and consumer electronics. It is suitable for powering microcontrollers, sensors, and other low-voltage devices requiring efficient voltage regulation and reduced power loss. Its features include high efficiency, a wide input voltage range, and compact packaging, making it ideal for space-constrained designs.

Equivalent

The LMR51450FNDRRR is a step-down regulator from Texas Instruments. Equivalent products include the LM2596, LM2675, and TPS563201 from Texas Instruments, as well as the LT1763 from Analog Devices. Ensure to check the specific electrical characteristics, such as input/output voltage range, current rating, and package type, to ensure compatibility for your application.

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