LM2675M-3.3

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LM2675M-3.3

IC REG BUCK 3.3V 1A 8SOIC

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  • Ông. Phần #LM2675M-3.3
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Thông số kỹ thuật

Series LM2675
Part Status Active
Function Step-Down
Output Configuration Positive
Topology Buck
Output Type Fixed
Number of Outputs 1
Voltage - Input (Min) 7V
Voltage - Input (Max) 40V
Voltage - Output (Min/Fixed) 3.3V
Current - Output 1A
Frequency - Switching 260kHz
Synchronous Rectifier No
Operating Temperature -40°C ~ 125°C (TJ)
Mounting Type Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width)
Supplier Device Package 8-SOP

Tổng quan

Description

The LM2675M-3.3 is a step-down voltage regulator from Texas Instruments, designed for efficient power conversion in electronic circuits. It is part of the Simple Switcher series and provides a fixed 3.3V output. The device operates with an input voltage range of 8V to 40V and can deliver up to 1A of continuous output current, making it suitable for various applications including industrial and consumer electronics.
Key features of the LM2675M-3.3 include a high efficiency of up to 96%, internal frequency compensation, and thermal shutdown protection. It also offers a low dropout voltage, which means it can maintain regulation even when the input voltage is close to the output voltage. The device's switching frequency is fixed at 260 kHz, which helps in reducing the size of external components, such as inductors and capacitors, thereby saving board space.
The LM2675M-3.3 comes in a surface-mount TO-263 package, making it easy to integrate into compact designs. Its design simplicity and reliability make it a popular choice for power supply designs requiring a regulated 3.3V output.

Features

The LM2675M-3.3 is a step-down voltage regulator with the following key features:
1. Output Voltage: Provides a fixed output of 3.3V.
2. Efficiency: High efficiency, typically up to 92%, minimizing power loss.
3. Switching Frequency: Operates at a fixed frequency of 260 kHz, which helps in reducing external component size.
4. Output Current: Capable of delivering up to 1A of output current.
5. Wide Input Voltage Range: Supports input voltages ranging from 8V to 40V.
6. Thermal Protection: Includes thermal shutdown to prevent overheating.
7. Current Limiting: Built-in current limiting for overload protection.
8. Soft Start: Features a soft start to limit inrush current during startup.
9. Low Dropout Operation: Provides efficient regulation at low dropout voltages.
10. Package: Available in an 8-pin surface-mount SOIC package for compact designs.
11. Applications: Suitable for use in telecommunications, battery-powered devices, and distributed power systems.
These features make the LM2675M-3.3 a versatile choice for applications requiring reliable, high-efficiency voltage regulation with a small footprint.

Package

The LM2675M-3.3 is a step-down voltage regulator that comes in a TO-263 surface-mount package, also known as SFM (Surface-mount Flatpack Medium). This package type is designed for efficient heat dissipation and is suitable for use in various electronic circuits requiring a compact form factor.

Pinout

The LM2675M-3.3 is a 5-pin TO-263 surface-mount package step-down voltage regulator. It provides a fixed output voltage of 3.3V and is capable of driving a load of up to 1A. Below are the functions of each pin in the device:
1. Pin 1 (Vin): Input voltage pin, where the DC input voltage is supplied.
2. Pin 2 (SW): Switch pin, connected to the inductor and diode in the external circuit.
3. Pin 3 (GND): Ground pin, the reference point for all voltages in the circuit.
4. Pin 4 (FB): Feedback pin, used to connect a resistor network for adjustable output or directly to Vout for fixed output versions.
5. Pin 5 (ON/OFF): Enable pin, used to turn the regulator on or off. A low signal disables the regulator, and a high signal enables it.
The LM2675 series is known for its high efficiency and ease of use, making it suitable for a variety of applications in power management systems.

Manufacturer

The LM2675M-3.3 is manufactured by Texas Instruments. Texas Instruments (TI) is an American technology company that designs and manufactures semiconductors and various integrated circuits, which it sells to electronics designers and manufacturers globally. The company is one of the largest semiconductor companies in the world and primarily focuses on developing analog chips and embedded processors, which are used in a wide range of applications across different industries, including automotive, industrial, personal electronics, communications equipment, and enterprise systems.

Application

The LM2675M-3.3 is a step-down voltage regulator used in applications requiring efficient DC-DC conversion. Key areas include powering microcontrollers, embedded systems, industrial automation equipment, consumer electronics, and communication devices. It is suitable for battery-powered devices, automotive electronics, and any system needing a stable 3.3V supply from higher voltage sources. Its compact design and efficiency make it ideal for space-constrained and thermally sensitive environments.

Equivalent

The LM2675M-3.3 is a step-down voltage regulator. Equivalent products include the MIC4680-3.3 from Microchip, the LM2596S-3.3 from Texas Instruments, and the MC34063A from ON Semiconductor. These alternatives offer similar functionality, such as providing a fixed 3.3V output and support for step-down (buck) conversion. However, always check the datasheets for specifics like input voltage range, output current capability, efficiency, and package type to ensure compatibility with your application.

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