LM2673S-ADJ/NOPB

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LM2673S-ADJ/NOPB

IC REG BUCK ADJ 3A TO263

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Spezifikationen

Series SIMPLE SWITCHER®
Part Status Active
Function Step-Down
Output Configuration Positive
Topology Buck
Output Type Adjustable
Number of Outputs 1
Voltage - Input (Min) 8V
Voltage - Input (Max) 40V
Voltage - Output (Min/Fixed) 1.2V
Voltage - Output (Max) 37V
Current - Output 3A
Frequency - Switching 260kHz
Synchronous Rectifier No
Operating Temperature -40°C ~ 125°C (TJ)
Mounting Type Surface Mount
Package / Case TO-263-8, D2PAK (7 Leads + Tab), TO-263CA
Supplier Device Package TO-263 (DDPAK-7)
Base Product Number LM2673

Übersicht

Description

The LM2673S-ADJ/NOPB is a step-down (buck) voltage regulator designed to provide efficient power conversion from a higher input voltage to a lower output voltage. It has an adjustable output voltage range from 1.23V to 37V, making it versatile for various applications. The device features a high-efficiency design with a typical efficiency of up to 90%, which helps reduce heat generation and improve overall system performance.
Key specifications include input voltage range from 4V to 40V, a maximum output current of 3A, and built-in thermal shutdown and current limit protection for enhanced reliability. The LM2673S-ADJ/NOPB operates at a fixed frequency of 100 kHz, simplifying external component selection and layout. Additionally, the NOPB suffix indicates that it is lead-free, aligning with environmental regulations.
This regulator is suitable for applications in battery-powered devices, automotive systems, and industrial equipment where efficient power management is crucial. Its compact size and adjustable output make it a popular choice among engineers designing power supply solutions.

Features

The LM2673S-ADJ/NOPB is a step-down (buck) voltage regulator with the following key features:
1. Adjustable Output Voltage: The output voltage can be set from 1.2V to 37V.
2. High Efficiency: Typically, it operates with efficiencies up to 90%, reducing heat generation.
3. Output Current: Capable of delivering up to 3A of continuous output current.
4. Wide Input Voltage Range: Accepts input voltages from 4.5V to 40V.
5. Built-in Protection: Features include thermal shutdown and current limit protection.
6. Simple Design: Requires minimal external components, simplifying circuit design.
7. TTL-Compatible: Can interface with TTL logic levels for enable/disable functions.
8. Adjustable Switching Frequency: Frequency can be adjusted to optimize performance for specific applications.
9. Compact Package: Available in a standard TO-220 and surface-mount packages for flexible design options.
These characteristics make the LM2673S-ADJ/NOPB suitable for a variety of applications, including battery-operated devices and power supply systems.

Package

The LM2673S-ADJ/NOPB is packaged in a surface mount, TO-220 format. This package type allows for efficient thermal management and is suitable for applications requiring adjustable output voltage regulation in switching power supplies.

Pinout

The LM2673S-ADJ/NOPB is a step-down (buck) voltage regulator with a pin count of 5. The pin functions are as follows:
1. VIN: Input voltage supply (3.5V to 40V).
2. GND: Ground reference.
3. SW: Switch node; connects to the inductor and the output.
4. VOUT: Output voltage; adjustable via external resistors.
5. COMP: Compensation pin; connects to an external network for stability and transient response.
This device is designed to provide a regulated output voltage, adjustable between 1.2V and 37V, with high efficiency and low quiescent current.

Manufacturer

The LM2673S-ADJ/NOPB is manufactured by Texas Instruments (TI), a global semiconductor company based in the United States. Texas Instruments is renowned for designing and producing a wide range of innovative semiconductor products and solutions, including analog, embedded processing, and digital signal processing technologies. The company serves various industries, including automotive, industrial, communications, and consumer electronics. TI is also recognized for its commitment to research and development, continuously advancing technologies to meet the needs of modern electronic applications.

Application

The LM2673S-ADJ/NOPB is a step-down switching voltage regulator suitable for various applications, including power supply for microcontrollers, RF modules, and portable devices. It is ideal for battery-operated equipment, automotive electronics, and point-of-load regulation due to its efficiency and adjustable output voltage. Its robustness makes it suitable for industrial automation, consumer electronics, and telecommunications systems.

Equivalent

The LM2673S-ADJ/NOPB is a step-down (buck) voltage regulator. Equivalent products include:
1. LM2596 - Another adjustable buck regulator with similar specifications.
2. LT1083 - A low-dropout adjustable regulator.
3. LM2674 - A higher current version with similar functionality.
4. TPS54331 - A Texas Instruments alternative with similar features.
Always verify the specifications for compatibility in your design.

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