LM2575S-ADJ

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LM2575S-ADJ

IC REG BUCK ADJ 1A TO263

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規格

Series SIMPLE SWITCHER®
Part Status Obsolete
Function Step-Down
Output Configuration Positive
Topology Buck
Output Type Adjustable
Number of Outputs 1
Voltage - Input (Min) 4V
Voltage - Input (Max) 40V
Voltage - Output (Min/Fixed) 1.23V
Voltage - Output (Max) 37V
Current - Output 1A
Frequency - Switching 52kHz
Synchronous Rectifier No
Operating Temperature -40°C ~ 125°C (TJ)
Mounting Type Surface Mount
Package / Case TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
Supplier Device Package TO-263 (DDPAK-5)
Base Product Number LM2575

概述

Description

The LM2575S-ADJ is a versatile, adjustable switching voltage regulator designed to provide efficient power conversion in various applications. It is part of the LM2575 series from Texas Instruments, which is known for its ease of use and reliability. Operating with an input voltage range of 4.5V to 40V, the LM2575S-ADJ can deliver adjustable output voltages up to 37V, making it suitable for a wide range of electronic devices.
The device features a high efficiency of up to 90%, minimizing heat generation and allowing for compact designs. With a maximum output current of 1A, it can effectively power loads requiring moderate current. The built-in overcurrent protection and thermal shutdown features enhance its safety and reliability.
The LM2575S-ADJ is ideal for applications such as battery chargers, LED drivers, and portable devices. Its simplicity in implementation, combined with a few external components, makes it a popular choice for both hobbyists and professionals in power management solutions.

Features

The LM2575S-ADJ is a step-down (buck) voltage regulator designed for simplicity and efficiency in power supply applications. Key features include:
1. Adjustable Output Voltage: It allows output voltage adjustment from 1.23V to 37V, accommodating various application requirements.
2. High Efficiency: Typically up to 75% to 90%, reducing heat and improving overall system performance.
3. Current Capability: Supports up to 1A output current, suitable for powering microcontrollers, sensors, and other loads.
4. Wide Input Voltage Range: Accepts input voltages from 4.75V to 40V, making it versatile for different power sources.
5. Built-in Thermal Shutdown: Protects the device from overheating, enhancing reliability.
6. Simple Design: Requires minimal external components, making it easy to implement in designs.
7. Low Standby Current: Reduces power consumption in idle states.
8. Short Circuit Protection: Ensures safety and durability in case of load faults.
These features make the LM2575S-ADJ an ideal choice for various applications, including battery chargers, power supplies, and automotive electronics.

Package

The LM2575S-ADJ is typically available in a TO-220 package type, which is a standard through-hole package used for power applications, offering good thermal performance and ease of handling in various circuit designs.

Pinout

The LM2575S-ADJ is a step-down (buck) voltage regulator with a pin count of 5. Its pin configuration and functions are as follows:
1. Pin 1 - Input (Vin): Connects to the input voltage supply.
2. Pin 2 - Output (Vout): Delivers the regulated output voltage.
3. Pin 3 - Ground (GND): Common ground connection for the device.
4. Pin 4 - Feedback (Vfb): Used to set the output voltage; connects to a resistor divider for adjustable output.
5. Pin 5 - Switch (SW): Connects to the inductor and is the switching node for the buck converter operation.
The LM2575S-ADJ allows for adjustable output voltage (1.23V to 37V) using external resistors, making it versatile for various applications. It operates with high efficiency and includes built-in protection features.

Manufacturer

The LM2575S-ADJ is manufactured by Texas Instruments (TI), a leading global semiconductor company. Texas Instruments specializes in designing and manufacturing a wide range of analog and embedded processing products. They are known for their innovation in various sectors, including industrial, automotive, communications, and consumer electronics. As a prominent player in the semiconductor industry, TI focuses on developing high-performance solutions for diverse applications, ensuring reliability and efficiency in electronic designs.

Application

The LM2575S-ADJ is a step-down (buck) voltage regulator commonly used in various applications, including power supplies for desktop computers, automotive electronics, battery chargers, and industrial equipment. It provides adjustable output voltage for driving microcontrollers, sensors, and other low-voltage devices, making it suitable for embedded systems and consumer electronics. Its efficiency and simplicity make it ideal for converting higher voltages to lower voltages in compact designs, like LED drivers and portable devices.

Equivalent

Equivalent products to the LM2575S-ADJ include the LM2596, LM2576, LMR160, and LM2675. These are all step-down (buck) voltage regulators with similar input voltage ranges and adjustable output features. Always check specific electrical characteristics and pin configurations to ensure compatibility for your application.

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