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LM2596R-12

Name: LM2596R-12
Rating: 4.7 (12 reviews)

IC REG BUCK 12V 3A TO263-5L

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資料表 LM2596R-12 DataSheet
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規格

Series	SIMPLE SWITCHER®
Part Status	Active
Function	Step-Down
Output Configuration	Positive
Topology	Buck
Output Type	Fixed
Number of Outputs	1
Voltage - Input (Max)	40V
Voltage - Output (Min/Fixed)	12V
Current - Output	3A
Frequency - Switching	150kHz
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-263-5L

概述

Description

The LM2596R-12 is a step-down (buck) voltage regulator designed to efficiently convert higher input voltages to a stable 12V output. It operates with a wide input voltage range of 4.5V to 40V and can deliver up to 3A of output current, making it suitable for various applications, including power supplies for microcontrollers and other electronic devices.
Key features include high efficiency (up to 75%), built-in over-current protection, thermal shutdown, and a compact surface-mount package. The device uses a switching frequency of approximately 150kHz, which helps reduce the size of external components like inductors and capacitors.
The LM2596R-12 is popular in DIY electronics, automotive, and industrial applications, thanks to its simplicity, reliability, and cost-effectiveness. It requires minimal external components for operation, making it user-friendly for both beginners and experienced engineers.

Features

The LM2596R-12 is a step-down (buck) voltage regulator designed for efficient power management. Key features include:
1. Output Voltage: Fixed output of 12V.
2. Input Voltage Range: Accepts input voltages from 4.5V to 40V.
3. Output Current: Capable of delivering up to 3A continuous output current.
4. Efficiency: High efficiency (up to 90%) reduces heat generation, suitable for battery-powered applications.
5. Switching Frequency: Operates at a nominal frequency of 150kHz, allowing for smaller external components.
6. Thermal Protection: Includes thermal shutdown and current limit features to protect against overloads.
7. Compact Design: Available in a TO-220 or surface-mount package for space-saving applications.
8. Easy to Use: Requires minimal external components for operation, simplifying design.
Ideal for power supply applications in consumer electronics, automotive, and industrial systems, the LM2596R-12 is a reliable choice for converting higher voltages down to 12V.

Package

The LM2596R-12 is commonly available in a TO-263 package type, which is a surface-mount package. It is designed for high-efficiency step-down voltage regulation applications.

Pinout

The LM2596R-12 is a step-down (buck) voltage regulator with a total of 5 pins. Here is the pinout and their functions:
1. Vin: Input voltage pin (typically 4.5V to 40V).
2. Vout: Output voltage pin (fixed at 12V for LM2596R-12).
3. GND: Ground pin.
4. Feedback (FB): Used for voltage feedback to regulate output (not connected in the fixed version).
5. Switch (SW): Connects to the inductor and output, responsible for switching control.
The LM2596R-12 provides a regulated output of 12V and can deliver up to 3A of output current, making it suitable for various applications including power supplies for electronics.

Manufacturer

The LM2596R-12 is a voltage regulator manufactured by Texas Instruments (TI), a prominent American technology company. Texas Instruments specializes in designing and producing semiconductors and various integrated circuits (ICs) for a wide range of applications, including analog, digital signal processing, and embedded systems. The company is well-known for its innovations in analog electronics, microcontrollers, and processors, catering to diverse sectors such as automotive, industrial, consumer electronics, and communications. TI plays a significant role in the semiconductor industry and is recognized for its commitment to quality, technological advancement, and customer support.

Application

The LM2596R-12 is a step-down (buck) voltage regulator commonly used in various applications, including power supplies for microcontrollers, LED drivers, battery chargers, and automotive systems. It is suitable for efficient voltage conversion in consumer electronics, industrial equipment, and communication devices, providing stable output at 12V for powering components requiring lower voltage levels. Its reliability and efficiency make it ideal for portable devices and power management solutions.

Equivalent

Equivalent products to the LM2596R-12 include the LM2675-12, LM2596-ADJ (adjustable version), LM2576-12, and the TPS5430-12. These devices provide similar step-down (buck) voltage regulation features, but ensure to check specifications for current ratings and thermal performance to match your application needs.