LM2575SX-5.0

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LM2575SX-5.0

IC REG BUCK 5V 1A TO263

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Thông số kỹ thuật

Series SIMPLE SWITCHER®
Part Status Obsolete
Base Product Number LM2575
Function Step-Down
Output Configuration Positive
Topology Buck
Output Type Fixed
Number of Outputs 1
Voltage - Input (Min) 4V
Voltage - Input (Max) 40V
Voltage - Output (Min/Fixed) 5V
Current - Output 1A
Frequency - Switching 52kHz
Synchronous Rectifier No
Operating Temperature -40°C ~ 125°C (TJ)
Mounting Type Surface Mount
Package TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
Supplier Device Package TO-263 (DDPAK-5)
Packaging Tape & Reel (TR)

Tổng quan

Description

The LM2575SX-5.0 is a step-down voltage regulator from Texas Instruments, designed to provide a fixed 5V output at up to 1A of load current. It is part of the LM2575 series, which is known for its simplicity, efficiency, and reliability in power management. This regulator is particularly suitable for applications requiring power conversion from a higher DC input voltage to a stable 5V output.
Key features of the LM2575SX-5.0 include:
1. Efficiency: High efficiency of up to 88% reduces heat generation and power waste.
2. Wide Input Range: Operates with input voltages ranging from 7V to 40V, making it versatile for various applications.
3. Low Component Count: Requires minimal external components, simplifying the design and reducing costs.
4. Built-in Features: Includes an internal switch, frequency compensation, and thermal shutdown for protection.
5. Applications: Commonly used in consumer electronics, battery-powered devices, and industrial systems.
The LM2575SX-5.0 is available in a TO-263 surface-mount package, allowing for a compact and robust design. It is widely appreciated for its ease of use and reliable performance in providing a stable 5V output.

Features

The LM2575SX-5.0 is a monolithic integrated circuit that functions as a step-down (buck) voltage regulator. Here are its key features:
1. Output Voltage: Fixed output voltage of 5.0V.
2. Input Voltage Range: Capable of handling a wide input voltage range, typically up to 40V.
3. Output Current: Delivers up to 1A of load current.
4. Efficiency: High efficiency, typically around 88%, due to its switching design.
5. Switching Frequency: Operates at a fixed frequency of 52 kHz.
6. Thermal Shutdown: Includes thermal shutdown protection to prevent damage from overheating.
7. Current Limiting: Features current limiting for protection against overcurrent conditions.
8. Simple Design: Requires minimal external components, simplifying the circuit design.
9. Low Standby Current: Low quiescent current to improve efficiency in light load conditions.
10. Package Options: Available in surface-mount packages, such as TO-263 (D²PAK).
The LM2575SX-5.0 is commonly used in applications requiring reliable and efficient voltage regulation, such as power supplies for microcontrollers, battery-powered devices, and other electronic systems.

Package

The LM2575SX-5.0 is a voltage regulator in a surface-mount D2PAK package, which is commonly used for power management applications. This package type is suitable for applications requiring efficient thermal performance and compact size.

Pinout

The LM2575SX-5.0 is a 5-volt fixed output voltage version of the LM2575 series, which are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator. It is typically available in a 5-pin TO-263 surface-mount package. The pin functions are as follows:
1. Vin (Input Voltage): This pin is the input supply voltage for the regulator. It allows for a range of input voltages.

2. Output: This pin provides the regulated output voltage, which is 5 volts for the LM2575SX-5.0 version.
3. Ground: This pin is the ground reference for the entire circuit and should be connected to the system ground.
4. Feedback (for adjustable version only): Although the LM2575SX-5.0 has a fixed output, this pin is typically used in adjustable versions for feedback to set the output voltage. It is internally connected for the fixed version.
5. ON/OFF (Shutdown): This pin can be used to put the regulator into a low-power shutdown mode.
These pins work together to facilitate efficient voltage regulation in various electronic applications.

Manufacturer

The LM2575SX-5.0 is manufactured by Texas Instruments, a global semiconductor company. Texas Instruments is known for designing and manufacturing a broad range of analog and embedded processing chips. The company focuses on developing innovative solutions that enhance electronics across various industries, including automotive, industrial, personal electronics, communications equipment, and enterprise systems.

Application

The LM2575SX-5.0 is a step-down voltage regulator used in various applications including power supplies for microprocessors and digital circuits, battery chargers, distributed power systems, and automotive power regulation. Its ability to provide a fixed 5V output with high efficiency makes it suitable for consumer electronics, portable devices, and industrial equipment.

Equivalent

The LM2575SX-5.0 is a 5V, 1A step-down voltage regulator. Equivalent products include:
1. L78S05CV - From STMicroelectronics, a 5V, 2A linear regulator.
2. MC34063A - From ON Semiconductor, a versatile DC-DC converter.
3. LM2596-5.0 - From Texas Instruments, a buck regulator with similar specs but higher current output (3A).
4. NCP3063 - From ON Semiconductor, a switching regulator suitable for similar applications.
5. L4971 - From STMicroelectronics, a step-down switching regulator with 5V output options.
Always check the datasheets for compatibility in your specific application.

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