LM2676SX-ADJ
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Texas Instruments LM2676SX-ADJ

Manufacturer No:
LM2676SX-ADJ
Manufacturer:
Texas Instruments
Package:
Tape & Reel (TR)
Description:
IC REG BUCK ADJ 3A TO263-7
Delivery:
Payment:
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Product Introduction

Overview

The LM2676SX-ADJ, produced by Texas Instruments, is a high-efficiency step-down (buck) switching regulator. This monolithic integrated circuit provides all the active functions necessary for a buck switching regulator, making it a comprehensive solution for power supply designs. The LM2676 series is capable of driving up to 3-A loads with excellent line and load regulation characteristics. It features a low ON-resistance DMOS power switch, which ensures high efficiency, typically above 90%.

Key Specifications

Parameter Min Typ Max Unit
Input Voltage 8 - 40 V
Output Voltage (Adjustable) 1.23 - 37 V
Output Current - - 3 A
Switching Frequency 260 - 260 kHz
Quiescent Current - 4.2 6 mA
Standby Quiescent Current - 50 100 µA
Current Limit 3.8 - 5.25 A
Switch ON-resistance - 0.17 0.29 Ω
Operating Temperature Range -40 - 125 °C
Package Type - - TO-263-8, D2Pak -

Key Features

  • High Efficiency: The LM2676 achieves high efficiency (> 90%) due to the use of a low ON-resistance DMOS power switch.
  • Adjustable Output Voltage: The LM2676SX-ADJ version allows for adjustable output voltage from 1.23 V to 37 V.
  • Fixed Frequency Oscillator: A high fixed frequency oscillator at 260 kHz enables the use of smaller sized components.
  • Thermal Shutdown and Current Limiting: Built-in thermal shutdown and current limiting protect the device from overcurrent and overheating conditions.
  • ON/OFF Control Input: An enable input allows the regulator to be powered down to a low 50-µA quiescent current standby condition.
  • Low Component Count: The SIMPLE SWITCHER® concept minimizes the number of external components required for the design.

Applications

  • Power Supplies: The LM2676 is suitable for various power supply applications requiring high efficiency and low component count.
  • Industrial and Automotive Systems: Its operating temperature range of -40°C to 125°C makes it suitable for industrial and automotive environments.
  • Embedded Systems and IoT Devices: The adjustable output voltage and high efficiency make it a good fit for embedded systems and IoT devices.
  • Telecommunications and Networking Equipment: It can be used in telecommunications and networking equipment where reliable and efficient power supply is crucial.

Q & A

  1. What is the maximum output current of the LM2676SX-ADJ?

    The maximum output current of the LM2676SX-ADJ is 3 A.

  2. What is the switching frequency of the LM2676SX-ADJ?

    The switching frequency of the LM2676SX-ADJ is fixed at 260 kHz.

  3. What is the operating temperature range of the LM2676SX-ADJ?

    The operating temperature range of the LM2676SX-ADJ is -40°C to 125°C.

  4. Does the LM2676SX-ADJ have built-in thermal shutdown and current limiting?

    Yes, the LM2676SX-ADJ has built-in thermal shutdown and current limiting.

  5. How can the LM2676SX-ADJ be powered down to a low quiescent current state?

    The LM2676SX-ADJ can be powered down to a low 50-µA quiescent current standby condition using the ON/OFF control input.

  6. What is the typical quiescent current of the LM2676SX-ADJ?

    The typical quiescent current of the LM2676SX-ADJ is 4.2 mA.

  7. What is the maximum duty cycle of the LM2676SX-ADJ?

    The maximum duty cycle of the LM2676SX-ADJ is 91%.

  8. What package types are available for the LM2676SX-ADJ?

    The LM2676SX-ADJ is available in TO-263-8 and D2Pak packages.

  9. Is the LM2676SX-ADJ suitable for automotive applications?

    Yes, the LM2676SX-ADJ is suitable for automotive applications due to its wide operating temperature range and robust features.

  10. Can the output voltage of the LM2676SX-ADJ be adjusted?

    Yes, the output voltage of the LM2676SX-ADJ can be adjusted from 1.23 V to 37 V.

Product Attributes

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:DDPAK/TO-263-7
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Similar Products

Part Number LM2676SX-ADJ LM2677SX-ADJ LM2678SX-ADJ LM2676S-ADJ LM2676SD-ADJ LM2676SDX-ADJ
Manufacturer Texas Instruments National Semiconductor National Semiconductor Texas Instruments National Semiconductor Texas Instruments
Product Status Not For New Designs Active Active Not For New Designs Active Not For New Designs
Function Step-Down Step-Down Step-Down Step-Down Step-Down Step-Down
Output Configuration Positive Positive Positive Positive Positive Positive
Topology Buck Buck Buck Buck Buck Buck
Output Type Adjustable Adjustable Adjustable Adjustable Adjustable Adjustable
Number of Outputs 1 1 1 1 1 1
Voltage - Input (Min) 8V 8V 8V 8V 8V 8V
Voltage - Input (Max) 40V 40V 40V 40V 40V 40V
Voltage - Output (Min/Fixed) 1.2V 1.21V 1.21V 1.2V 1.2V 1.2V
Voltage - Output (Max) 37V 37V 37V 37V 37V 37V
Current - Output 3A 5A 5A 3A 3A 3A
Frequency - Switching 260kHz 260kHz 260kHz 260kHz 260kHz 260kHz
Synchronous Rectifier No No No No No No
Operating Temperature -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ)
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount
Package / Case TO-263-8, D²Pak (7 Leads + Tab), TO-263CA TO-263-8, D²Pak (7 Leads + Tab), TO-263CA TO-263-8, D²Pak (7 Leads + Tab), TO-263CA TO-263-8, D²Pak (7 Leads + Tab), TO-263CA 14-VDFN Exposed Pad 14-VDFN Exposed Pad
Supplier Device Package DDPAK/TO-263-7 DDPAK/TO-263-7 DDPAK/TO-263-7 DDPAK/TO-263-7 14-VSON (6x5) 14-VSON (5x6)

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