LM22677TJ-ADJ/NOPB
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Texas Instruments LM22677TJ-ADJ/NOPB

Manufacturer No:
LM22677TJ-ADJ/NOPB
Manufacturer:
Texas Instruments
Package:
Tape & Reel (TR)
Description:
IC REG BUCK ADJ 5A TO263-7
Delivery:
Payment:
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Product Introduction

Overview

The LM22677TJ-ADJ/NOPB is a high-performance step-down DC/DC switching regulator produced by Texas Instruments. It is part of the SIMPLE SWITCHER family, designed to provide an efficient and easy-to-use solution for high-voltage step-down (buck) regulator applications. This regulator incorporates a 42-V N-channel MOSFET switch, capable of delivering up to 5 A of load current. It features excellent line and load regulation, high efficiency (> 90%), and a wide input voltage range of 4.5 V to 42 V. The LM22677 is available in adjustable output voltage options as low as 1.285 V and a fixed 5 V output, making it versatile for various power management needs.

Key Specifications

Parameter Value
Input Voltage Range 4.5 V to 42 V
Output Current Up to 5 A
Output Voltage Options Adjustable (as low as 1.285 V), Fixed 5 V
Switching Frequency Default: 500 kHz, Adjustable: 200 kHz to 1 MHz
Operating Junction Temperature Range -40°C to +125°C
Package Type TO-263 (NDR) with 7 pins
MOSFET Resistance 100-mΩ N-Channel MOSFET
Feedback Reference Accuracy ±1.5%
Shutdown Current Typical: 25 µA

Key Features

  • Wide Input Voltage Range: 4.5 V to 42 V
  • Internally Compensated Voltage Mode Control
  • Stable With Low ESR Ceramic Capacitors
  • 100-mΩ N-Channel MOSFET
  • Adjustable and Fixed Output Voltage Options
  • ±1.5% Feedback Reference Accuracy
  • Default Switching Frequency: 500 kHz, Adjustable: 200 kHz to 1 MHz
  • Frequency Synchronization Capability
  • Precision Enable Input
  • Integrated Boot-Strap Diode and Soft-Start
  • Fully WEBENCH® Enabled
  • AEC-Q100 Grade 1 Qualified for Automotive Applications (LM22677-Q1)
  • Thermal Shutdown and Current Limiting for Overload Protection

Applications

The LM22677TJ-ADJ/NOPB is suitable for a variety of applications requiring high-efficiency step-down voltage regulation. These include:

  • Automotive Systems: Especially with the LM22677-Q1 version, which is AEC-Q100 Grade 1 Qualified.
  • Industrial Power Supplies: Where high reliability and efficiency are crucial.
  • Telecommunications Equipment: For powering various components within telecom systems.
  • Consumer Electronics: Such as power supplies for laptops, desktops, and other electronic devices.
  • Medical Devices: Where precise voltage regulation is essential.

Q & A

  1. What is the input voltage range of the LM22677TJ-ADJ/NOPB?

    The input voltage range is from 4.5 V to 42 V.

  2. What are the output voltage options for this regulator?

    The output voltage can be adjusted as low as 1.285 V or fixed at 5 V.

  3. What is the default switching frequency of the LM22677TJ-ADJ/NOPB?

    The default switching frequency is 500 kHz, but it can be adjusted from 200 kHz to 1 MHz.

  4. What type of MOSFET is used in the LM22677TJ-ADJ/NOPB?

    The regulator uses a 100-mΩ N-Channel MOSFET.

  5. Is the LM22677TJ-ADJ/NOPB suitable for automotive applications?

    Yes, the LM22677-Q1 version is AEC-Q100 Grade 1 Qualified for automotive use.

  6. What is the operating junction temperature range of the LM22677TJ-ADJ/NOPB?

    The operating junction temperature range is from -40°C to +125°C.

  7. Does the LM22677TJ-ADJ/NOPB have built-in protection features?

    Yes, it includes thermal shutdown and current limiting for overload protection.

  8. How much current does the regulator draw in shutdown mode?

    In shutdown mode, the regulator draws only 25 µA (typical).

  9. Is the LM22677TJ-ADJ/NOPB compatible with the TI WEBENCH tool?

    Yes, it is fully WEBENCH® Enabled, allowing for easy design-in and simulation.

  10. What package type is the LM22677TJ-ADJ/NOPB available in?

    The regulator is available in a TO-263 (NDR) package with 7 pins.

Product Attributes

Function:Step-Down
Output Configuration:Positive
Topology:Buck
Output Type:Adjustable
Number of Outputs:1
Voltage - Input (Min):4.5V
Voltage - Input (Max):42V
Voltage - Output (Min/Fixed):1.285V
Voltage - Output (Max):37V
Current - Output:5A
Frequency - Switching:500kHz
Synchronous Rectifier:No
Operating Temperature:-40°C ~ 125°C (TJ)
Mounting Type:Surface Mount
Package / Case:TO-263-7 Thin
Supplier Device Package:TO-263-7 Thin
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Similar Products

Part Number LM22677TJ-ADJ/NOPB LM22679TJ-ADJ/NOPB LM22677TJE-ADJ/NOPB LM22678TJ-ADJ/NOPB LM22670TJ-ADJ/NOPB LM22673TJ-ADJ/NOPB LM22676TJ-ADJ/NOPB LM22677QTJ-ADJ/NOPB
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Product Status Active Active Active Active Active Active Active Active
Function Step-Down Step-Down Step-Down Step-Down Step-Down Step-Down Step-Down Step-Down
Output Configuration Positive Positive Positive Positive Positive Positive Positive Positive
Topology Buck Buck Buck Buck Buck Buck Buck Buck
Output Type Adjustable Adjustable Adjustable Adjustable Adjustable Adjustable Adjustable Adjustable
Number of Outputs 1 1 1 1 1 1 1 1
Voltage - Input (Min) 4.5V 4.5V 4.5V 4.5V 4.5V 4.5V 4.5V 4.5V
Voltage - Input (Max) 42V 42V 42V 42V 42V 42V 42V 42V
Voltage - Output (Min/Fixed) 1.285V 1.285V 1.285V 1.285V 1.285V 1.285V 1.285V 1.285V
Voltage - Output (Max) 37V 37V 37V 37V 37V 37V 37V 37V
Current - Output 5A 5A 5A 5A 3A 3A 3A 5A
Frequency - Switching 500kHz 500kHz 500kHz 500kHz 500kHz 500kHz 500kHz 500kHz
Synchronous Rectifier No No 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) -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ)
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount
Package / Case TO-263-7 Thin TO-263-7 Thin TO-263-7 Thin TO-263-7 Thin TO-263-7 Thin TO-263-7 Thin TO-263-7 Thin TO-263-7 Thin
Supplier Device Package TO-263-7 Thin TO-263-7 Thin TO-263-7 Thin TO-263-7 Thin TO-263-7 Thin TO-263-7 Thin TO-263-7 Thin TO-263-7 Thin

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