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LM2678SX-12

Name: LM2678SX-12
Rating: 4.7 (12 reviews)

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Mfr。パート #LM2678SX-12
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仕様

Brand	Texas Instruments
Product Type	Switching Voltage Regulators
Subcategory	PMIC - Power Management ICs
Mounting Style	SMD/SMT
Package / Case	TO-263-7
Minimum Operating Temperature	- 40 C
Maximum Operating Temperature	+ 125 C
Tradename	SIMPLE SWITCHER
Height	4.57 mm
Length	10.16 mm
Width	8.64 mm
Unit Weight	0.056438 oz
Topology	Buck
Output Voltage	12 V
Output Current	5 A
Number of Outputs	1 Output
Input Voltage - Min	8 V
Input Voltage - Max	40 V
Switching Frequency	260 kHz
Type	Step Down

概要

Description

The LM2678SX-12 is a step-down (buck) voltage regulator designed to provide a stable output voltage of 12V from a higher input voltage, typically ranging from 16V to 40V. It is part of the LM2678 series, known for its high efficiency and ability to handle output currents up to 1A. The device features a built-in switch, reducing the need for external components, and allows for easy integration into various applications.
Key features include thermal shutdown, current limiting, and a low shutdown current for energy efficiency. The LM2678SX-12 is suitable for applications such as industrial power supplies, telecommunications, and automotive systems. Its compact design and robust performance make it an ideal choice for powering devices that require a reliable 12V supply.
With a typical efficiency of around 85-90%, the LM2678SX-12 helps minimize heat generation, extending the lifespan of connected components. Overall, it offers a reliable solution for voltage regulation needs in demanding environments.

Features

The LM2678SX-12 is a high-efficiency step-down (buck) voltage regulator from Texas Instruments. It features:
1. Output Voltage: Fixed output of 12V.
2. Input Voltage Range: Operates from 7V to 40V input, allowing for versatility in various applications.
3. Output Current: Capable of delivering up to 1.5A of continuous output current.
4. Efficiency: High efficiency (up to 90%) reduces thermal dissipation, making it suitable for compact designs.
5. Switching Frequency: Operates at a fixed frequency of 260 kHz, optimizing component size and performance.
6. Thermal Protection: Includes built-in thermal shutdown for enhanced reliability.
7. Short-Circuit Protection: Features current limiting to protect against short circuits.
8. Package: Available in a TO-220 or an isolated surface-mount package, facilitating integration into different PCB layouts.
These characteristics make the LM2678SX-12 suitable for a variety of applications, including industrial, automotive, and consumer electronics.

Package

The LM2678SX-12 is offered in a TO-220 package type. This package is designed for efficient heat dissipation and is suitable for applications requiring high power output.

Pinout

The LM2678SX-12 is a step-down (buck) voltage regulator with a total of 5 pins. The pin functions are as follows:
1. VIN (Pin 1): Input voltage, connects to the power supply.
2. SW (Pin 2): Switch pin, connects to the inductor and is used for energy transfer during switching.
3. GND (Pin 3): Ground pin, serves as the reference point for all voltages in the circuit.
4. COMP (Pin 4): Compensation pin, used for frequency compensation and stability of the control loop.
5. VOUT (Pin 5): Output voltage, delivers the regulated output voltage.
The LM2678SX-12 specifically regulates an output voltage of 12V. It is designed for high efficiency and can handle load currents up to 1A.

Manufacturer

The LM2678SX-12 is manufactured by Texas Instruments (TI), a well-known American technology company. Founded in 1930, Texas Instruments specializes in designing and manufacturing semiconductors and various integrated circuits. The company is particularly recognized for its analog and embedded processing products, serving a wide range of industries including automotive, industrial, consumer electronics, and communications. TI is also known for its contributions to the development of calculators and digital signal processors. The LM2678SX-12 is a step-down (buck) voltage regulator utilized in power management applications, known for its efficiency and reliability.

Application

The LM2678SX-12 is a step-down (buck) voltage regulator commonly used in various applications, including battery-powered devices, industrial equipment, and telecommunications. It provides a regulated 12V output from higher input voltages, making it suitable for powering microcontrollers, sensors, and other electronic components. Its high efficiency and ability to handle load transients make it ideal for automotive, consumer electronics, and portable devices where power conservation and stability are critical.

Equivalent

Equivalent products to the LM2678SX-12 include the LM2576-12, LM2676-12, and the TPS54331. These components are all step-down (buck) voltage regulators with similar specifications, capable of providing output voltages around 12V. Always verify the specific parameters like input voltage range, output current, and thermal characteristics for your application needs.