LM2670SX-ADJ

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LM2670SX-ADJ

IC REG BUCK ADJ 3A TO263-7

  • Fabricante
  • Mfr. Parte #LM2670SX-ADJ
  • Paquete TO263-7
  • Hoja de datos
  • En stock5636

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Especificaciones

Package Tape & Reel (TR),Cut Tape (CT)
Series SIMPLE SWITCHER®
ProductStatus Obsolete
Function Step-Down
OutputConfiguration Positive
Topology Buck
OutputType Adjustable
NumberofOutputs 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
SynchronousRectifier No
OperatingTemperature -40°C ~ 125°C (TJ)
MountingType Surface Mount
Package/Case TO-263-8, D²Pak (7 Leads + Tab), TO-263CA

Descripción general

Description

The LM2670SX-ADJ is a high-efficiency step-down voltage regulator designed for applications requiring a compact solution for converting higher input voltages to lower output voltages. It is part of the LM2670 series from Texas Instruments. Key features include the ability to deliver up to 3A of output current, a wide input voltage range (typically 8V to 40V), and an adjustable output voltage, which can be set using an external resistor divider. The regulator offers a high switching frequency of 260 kHz, which allows for smaller external components and a more compact overall design. Additional features include protection mechanisms like thermal shutdown, current limiting, and an enable/shutdown pin that provides precise control over the device’s operation. Its efficiency and performance make it suitable for use in various applications, including power supplies for microprocessors, battery-powered devices, and industrial automation systems. The LM2670SX-ADJ comes in a surface-mount TO-263 package, facilitating efficient heat dissipation and compact PCB design.

Features

The LM2670SX-ADJ is a step-down (buck) voltage regulator from Texas Instruments. It features an adjustable output voltage, allowing users to customize the output based on specific requirements. The regulator can efficiently convert input voltages ranging from 8V to 40V to a desired lower output voltage.
Key features include:
1. Efficiency: It offers high efficiency, making it suitable for applications that require power conservation.
2. Switching Frequency: Operates at a fixed frequency of 260 kHz, which allows for smaller external components and overall compact design.
3. Output Current: Capable of delivering up to 3A of output current, suitable for medium-power applications.
4. Thermal Protection: Incorporates thermal shutdown and current limiting to protect against overload conditions.
5. Soft Start: Includes an adjustable soft-start feature to control the inrush current during startup.
6. Low Standby Current: Features low standby current to enhance battery life in portable applications.
7. Package: Available in a surface-mount TO-263 package, which aids in efficient heat dissipation.
These features make the LM2670SX-ADJ a versatile choice for various applications, including consumer electronics, industrial controls, and automotive systems.

Package

The LM2670SX-ADJ is a DC-DC step-down voltage regulator from Texas Instruments. It comes in a surface-mount SMD package known as SOIC (Small Outline Integrated Circuit), specifically the DDA package, which is a 16-pin SOIC PowerPAD package.

Pinout

The LM2670SX-ADJ is a step-down voltage regulator, part of the LM2670 series, designed for high-efficiency power supply solutions. It typically comes in a 5-pin TO-263 surface-mount package. Here’s a brief overview of its pin functions:
1. Pin 1 (Vin): This is the input voltage pin where the unregulated input voltage is supplied.
2. Pin 2 (SW): The switch pin is connected to the inductor and facilitates the switching action of the internal transistor.
3. Pin 3 (GND): Ground pin for the device, serving as the common ground reference for both input and output.
4. Pin 4 (FB): The feedback pin receives the output voltage signal for regulation, helping maintain the desired output voltage by adjusting the duty cycle.
5. Pin 5 (ON/OFF): This pin is used to enable or disable the device. Pulling this pin low will disable the regulator, reducing current draw.
The LM2670SX-ADJ is designed for adjustable output, allowing for a wide range of output voltages by using external resistors connected to the feedback pin.

Manufacturer

The LM2670SX-ADJ is manufactured by Texas Instruments. Texas Instruments (TI) is an American technology company headquartered in Dallas, Texas. It is one of the largest semiconductor manufacturing companies in the world, specializing in designing and producing a wide range of analog and embedded processing chips. These chips are used in various applications across multiple industries, including automotive, industrial, personal electronics, communications, and enterprise systems. TI is known for its focus on innovation and quality in the semiconductor space, providing solutions that enhance performance while optimizing power efficiency.

Application

The LM2670SX-ADJ is a versatile voltage regulator used in various applications, including power management for microcontrollers, battery-powered devices, and industrial electronics. Its adjustable output voltage makes it suitable for custom power supply solutions in communication equipment, consumer electronics, and automotive systems. Additionally, its efficiency and thermal performance are beneficial for portable devices and distributed power systems.

Equivalent

The LM2670SX-ADJ is a versatile step-down (buck) voltage regulator. Equivalent products include:
1. LM2576-ADJ: A similar adjustable-output buck regulator from Texas Instruments.
2. MC34063: A commonly used DC-DC converter with similar functionality.
3. LM2596-ADJ: Another adjustable-output buck regulator.
4. LT1076: A Linear Technology adjustable step-down regulator.
5. MP1584EN: A compact, high-frequency buck converter.
These alternatives vary in efficiency, packaging, and frequency, so evaluate based on specific design requirements.

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