The LM2675MX-5.0/NOPB is a switching regulator chip with a fixed output voltage produced by Texas Instruments. It belongs to the LM2675 series and is available in TO-220, TO-263 and DDPAK packages. The "-5.0" indicates that the output voltage is 5.0V.

LM2675MX-5.0/NOPB is a monolithic integrated circuit constructed using LMDMOS technology. It is mainly used as a step-down switching regulator. This regulator is capable of providing all active functions and driving 1A of load current with excellent line and load regulation.

Ⅰ.Specification parameters of LM2675MX-5.0/NOPB

•Number of pins:8
•Topology:Buck
•Package:Reel
•Number of adjustment outputs:1
•Output voltage:5 V
•Output current:1 A
•Product Category:Switching Regulator
•Number of output terminals:1 Output
•Input voltage(maximum):40 V
•Supply voltage-Minimum:8 V
•Quiet current:2.5 mA
•Switching frequency:260 kHz
•Package/Case:SOIC-8
•Installation style:SMD/SMT
•Minimum operating temperature:-40℃
•Maximum operating temperature:+125℃
•Series:LM2675
•Close:Shutdown
•Input voltage:8 V to 40 V
•Operating power supply current:2.5 mA
•Input voltage(minimum):8 V
•Development Kit:LM2675-5.0EVAL
•Product Type:Switching Voltage Regulators
•Subcategory:PMIC-Power Management ICs
•Type:Step Down Voltage Regulator

Ⅱ.Features of LM2675MX-5.0/NOPB

1.Adjustable output voltage: Can be adjusted via external resistors or capacitors to meet the needs of specific applications.

2.Thermal Shutdown and Current Limit Protection

3.Fixed output voltage: The output voltage is 5.0V, which makes it suitable for many applications that require stable voltage.

4.Thermal shutdown protection: With overload and short circuit protection functions to prevent device overheating and damage.

5.Available in 8-Pin SOIC, PDIP, and 16-Pin WSON Package

6.Wide Input Voltage Range: 8 V to 40 V

7.Wide input voltage range: It can adapt to a wider range of input voltages, giving it greater flexibility in different application scenarios.

8.Ensured 1-A Output Load Current

9.Low quiescent current: Low quiescent current under light load conditions helps save power and extend battery life.

10.TTL Shutdown Capability, Low-Power Standby Mode

Ⅲ.Application fields of LM2675MX-5.0/NOPB

1.LED lighting: In the LED lighting system, a stable power supply is needed to drive the LED to ensure its stable and efficient work. LM2675MX-5.0/NOPB can be used to design LED driver circuits to provide constant current or voltage output. As an efficient switching regulator, LM2675MX-5.0/NOPB is very suitable for power management of LED lighting systems. It can provide constant current or voltage output, thereby ensuring stable operation of the LED. By adjusting the output of LM2675MX-5.0/NOPB, LED brightness control and color temperature adjustment can be achieved to meet lighting requirements in different scenarios and needs.

2.Power module: LM2675MX-5.0/NOPB can be used as the core component of a power module to convert high input voltage into a stable low output voltage, such as converting car battery voltage into a voltage suitable for embedded systems or other electronic devices. Take car batteries as an example. The standard voltage of car batteries is 12V, but many embedded systems, microcontrollers and other electronic devices may require lower voltages, such as 3.3V, 5V, etc. The LM2675MX-5.0/NOPB can effectively convert the high voltage obtained from the car battery to these low voltages and ensure the stability and reliability of the output voltage.

3.Communication equipment: Due to its excellent line and load regulation capabilities, and wide input voltage range, LM2675MX-5.0/NOPB is suitable for use in various communication equipment, such as mobile phones, base stations, routers, etc.

4.Embedded systems: In embedded systems, stable power supply is crucial. LM2675MX-5.0/NOPB can provide reliable power conversion function and is suitable for various embedded applications, such as industrial control, communication equipment, consumer electronics, etc. Embedded systems usually need to work under various environmental conditions, including temperature changes, electromagnetic interference, mechanical vibration, etc. These external factors may affect the stability of the power supply, thereby affecting the normal operation of the embedded system.

5.Aerospace: In the aerospace field, the requirements for power supply are very high, requiring high reliability, high efficiency and precise output voltage. The performance characteristics of the LM2675MX-5.0/NOPB make it suitable for power management in the aerospace field.

6.Industrial electronic equipment: LM2675MX-5.0/NOPB can be used in industrial control systems, automation equipment, power supply and other fields to provide stable and reliable power conversion functions. LM2675MX-5.0/NOPB is indeed very suitable for use in industrial electronic equipment, especially in the fields of industrial control systems, automation equipment and power supply. These fields have extremely high requirements on the stability and reliability of power supply, because any power supply fluctuation may cause equipment failure or performance degradation, thus affecting the smooth progress of the entire industrial process.

7.Automotive electronics: Automotive electronic systems have high requirements for the stability and efficiency of power supplies. The wide input voltage range and high efficiency of the LM2675MX-5.0/NOPB make it suitable for a wide range of applications in automotive electronic systems.

8.Battery charger: In a battery charger, AC power or other unstable DC power needs to be converted into a stable voltage suitable for charging. LM2675MX-5.0/NOPB can be used to design efficient and compact battery charger circuits. The LM2675MX-5.0/NOPB has a wide input voltage range and can accept many different types of power inputs, including rectified DC power from AC power and unstable DC power. This allows it to adapt to different charging environments, thereby improving the charger's versatility and adaptability. The LM2675MX-5.0/NOPB provides constant output voltage and current, which is critical for battery charging. It can ensure that the battery obtains stable and appropriate current and voltage during the charging process, preventing the battery from overcharging or over-discharging, thereby extending the service life of the battery.

9.Medical equipment: Medical equipment usually requires a precise voltage supply to ensure normal operation of the equipment and patient safety. The fixed and adjustable output voltage versions of the LM2675MX-5.0/NOPB, along with its excellent performance, make it suitable for power management in medical devices.

Ⅳ.Thermal management effect of LM2675MX-5.0/NOPB

•The LM2675MX-5.0/NOPB features thermal shutdown protection, an important aspect of thermal management. When the chip temperature exceeds the safe operating range, the thermal shutdown function is triggered and automatically turns off the power output to prevent the chip from overheating and damage. This feature provides effective thermal protection for the LM2675MX-5.0/NOPB.

•The LM2675MX-5.0/NOPB's high efficiency (up to 96%) also helps reduce energy loss and heat generation. High efficiency means less heat is generated during voltage conversion, reducing requirements on the cooling system and reducing the risk of performance degradation or failure due to overheating.

•For a complete evaluation of thermal management, other factors need to be considered, such as the operating ambient temperature of the chip, the design and efficiency of the cooling system, and the size of the load current. In actual applications, in order to achieve the best thermal management effect, it may be necessary to select an appropriate cooling solution based on the specific system design and working environment, such as adding radiators, fans or adjusting working conditions.

•The LM2675MX-5.0/NOPB has effective thermal shutdown protection and high efficiency, which help provide good thermal management. However, the specific thermal management effect still needs to be evaluated based on the actual application environment and the design of the cooling system.

Ⅴ.Absolute Maximum Ratings of LM2675MX-5.0/NOPB

Ⅵ.Functional Block Diagram of LM2675MX-5.0/NOPB

Ⅶ.Battery charging types supported by LM2675MX-5.0/NOPB

1.Lithium polymer battery (LiPo): Lithium polymer battery is a lightweight, high-capacity battery commonly used in drones, power tools and other fields. Similar to Li-ion batteries, the LM2675MX-5.0/NOPB can also provide a stable output voltage for Li-polymer battery chargers.

2.Lead-acid battery: Lead-acid battery is a mature and reliable battery technology, widely used in automobiles, UPS and other fields. Although the charging method of lead-acid batteries is relatively simple, LM2675MX-5.0/NOPB can still provide stable output voltage to ensure the smooth charging process.

3.Lithium-ion battery (Li-ion): Lithium-ion battery is one of the most commonly used battery types and is widely used in mobile phones, laptops, electric vehicles and other fields. LM2675MX-5.0/NOPB can provide stable output voltage for lithium-ion battery chargers to ensure that batteries are charged under safe and efficient conditions.

4.Nickel metal hydride battery (NiMH): Nickel metal hydride battery is an affordable, moderate-capacity battery commonly used in portable electronic devices and power tools. LM2675MX-5.0/NOPB can also provide stable output voltage for nickel metal hydride battery chargers.

Ⅷ.How to maintain and replace LM2675MX-5.0/NOPB

1.Regular inspection: It is very important to regularly check the working status of LM2675MX-5.0/NOPB. Check the appearance of the device to ensure there is no obvious damage or deformation.

2.Maintain heat dissipation: Make sure the heat sink of LM2675MX-5.0/NOPB is well connected to its package to ensure stable operation of the device under long-term high load conditions. In addition, clean the radiator surface regularly to ensure heat dissipation efficiency.

3.Prevent overload and short circuit: Avoid overloading or short circuiting the LM2675MX-5.0/NOPB, which will damage the device. Allow appropriate margins in the design to ensure that the device operates under rated operating conditions.

4.Prevent overheating: Try to prevent the LM2675MX-5.0/NOPB from working at excessively high ambient temperatures for a long time, and ensure that the device operates within the specified temperature range.

5.Pay attention to power quality: Providing stable and clean power input is the key to ensuring long-term stable operation of LM2675MX-5.0/NOPB. Use a good quality power supply and filter to protect the device from power supply noise and interference.

6.Pay attention to the pin connection: When replacing the LM2675MX-5.0/NOPB, be sure to connect the pins correctly and ensure good welding to avoid short circuit or bad contact between the pins.

Frequently Asked Questions

1.What are the key features of LM2675MX-5.0/NOPB?
Some key features of LM2675MX-5.0/NOPB include fixed output voltage, high efficiency, wide input voltage range, low quiescent current, thermal shutdown protection, and adjustable output voltage.

2.What is the output voltage of LM2675MX-5.0/NOPB?
The output voltage of LM2675MX-5.0/NOPB is fixed at 5.0V.

3.How can LM2675MX-5.0/NOPB be maintained to ensure long-term stable operation?
To ensure long-term stable operation of LM2675MX-5.0/NOPB, regular inspection, proper heat dissipation, avoiding overloading or short circuits, providing clean power input, and following manufacturer's guidelines for replacement are recommended.