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LM2674M-5.0
IC REG BUCK 5V 500MA 8SOIC
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- Mfr。パート #LM2674M-5.0
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仕様
| Series | SIMPLE SWITCHER® |
| Part Status | Obsolete |
| Base Product Number | LM2674 |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Output Type | Fixed |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 6.5V |
| Voltage - Input (Max) | 40V |
| Voltage - Output (Min/Fixed) | 5V |
| Current - Output | 500mA |
| Frequency - Switching | 260kHz |
| Synchronous Rectifier | No |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount |
| Package | 8-SOIC (0.154", 3.90mm Width) |
| Supplier Device Package | 8-SOIC |
| Packaging | Tube |
概要
Description
The LM2674M-5.0 is a step-down voltage regulator from the LM267X series produced by Texas Instruments. Designed for efficiency and compactness, this regulator provides a fixed 5.0V output from a higher input voltage, ranging between 8V to 40V. It supports a maximum output current of 500mA, making it suitable for various low-power applications such as battery-powered devices, industrial controls, and distributed power systems.
The device features a high switching frequency of 260 kHz, which allows for the use of smaller inductors and capacitors, reducing overall size and cost. It also includes built-in protection features like thermal shutdown and current limiting, enhancing reliability and safety. The LM2674M-5.0 is typically available in a surface-mount package, such as the SOIC-8, and is designed to offer ease of use with minimal external components required for implementation.
Overall, the LM2674M-5.0 provides a reliable, efficient solution for voltage regulation in applications requiring a stable 5V output from a higher DC input.
The device features a high switching frequency of 260 kHz, which allows for the use of smaller inductors and capacitors, reducing overall size and cost. It also includes built-in protection features like thermal shutdown and current limiting, enhancing reliability and safety. The LM2674M-5.0 is typically available in a surface-mount package, such as the SOIC-8, and is designed to offer ease of use with minimal external components required for implementation.
Overall, the LM2674M-5.0 provides a reliable, efficient solution for voltage regulation in applications requiring a stable 5V output from a higher DC input.
Features
The LM2674M-5.0 is a step-down voltage regulator from Texas Instruments. It operates with an input voltage range of 8V to 40V and provides a fixed output of 5.0V, with an output current capability of up to 500mA. Key features include:
1. High Efficiency: Typically over 90% efficiency due to its switch-mode operation.
2. Fixed Frequency: Operates at a fixed frequency of 260 kHz, allowing for predictable performance and easier filtering.
3. Low Standby Current: Designed for low power consumption during standby to enhance battery life in portable applications.
4. Thermal Shutdown: Integrated protection against overheating, ensuring reliability under extreme conditions.
5. Cycle-by-Cycle Current Limiting: Protects against short circuits or overcurrent conditions.
6. Soft Start: Reduces inrush current during power-up, minimizing stress on components.
7. Minimal External Components: Requires only a few external components, simplifying design and reducing overall system cost.
8. Package Options: Available in an 8-pin SOIC package, which aids in compact PCB designs.
Overall, the LM2674M-5.0 is suitable for applications requiring a reliable, efficient, and compact power supply solution.
1. High Efficiency: Typically over 90% efficiency due to its switch-mode operation.
2. Fixed Frequency: Operates at a fixed frequency of 260 kHz, allowing for predictable performance and easier filtering.
3. Low Standby Current: Designed for low power consumption during standby to enhance battery life in portable applications.
4. Thermal Shutdown: Integrated protection against overheating, ensuring reliability under extreme conditions.
5. Cycle-by-Cycle Current Limiting: Protects against short circuits or overcurrent conditions.
6. Soft Start: Reduces inrush current during power-up, minimizing stress on components.
7. Minimal External Components: Requires only a few external components, simplifying design and reducing overall system cost.
8. Package Options: Available in an 8-pin SOIC package, which aids in compact PCB designs.
Overall, the LM2674M-5.0 is suitable for applications requiring a reliable, efficient, and compact power supply solution.
Package
The LM2674M-5.0 is a voltage regulator from Texas Instruments. It comes in a surface-mount package, specifically an 8-pin SOIC (Small Outline Integrated Circuit).
Pinout
The LM2674M-5.0 is a step-down voltage regulator from Texas Instruments, capable of providing a constant 5V output. It typically comes in an 8-pin SOIC package. The pinout and functions are as follows:
1. Pin 1 (Boost): Connects a capacitor to the output to improve the efficiency by providing the gate drive voltage for the internal power switch.
2. Pin 2 (Vin): Input voltage supply pin. Accepts a range of input voltages typically between 8V and 40V.
3. Pin 3 (SW): Switch output pin. Connects to the inductor and freewheeling diode.
4. Pin 4 (Ground): Ground return for the internal circuitry.
5. Pin 5 (Feedback): Connects to the output to regulate the fixed 5V output voltage.
6. Pin 6 (ON/OFF): Enables or disables the device. A high level turns the device on, and a low level turns it off.
7. Pin 7 (No Connect or NC): Generally not connected within the circuit.
8. Pin 8 (Compensation): Provides loop compensation for the control system.
These functions facilitate the device's operation in efficiently converting higher input voltages to a stable 5V output suitable for various electronic applications.
1. Pin 1 (Boost): Connects a capacitor to the output to improve the efficiency by providing the gate drive voltage for the internal power switch.
2. Pin 2 (Vin): Input voltage supply pin. Accepts a range of input voltages typically between 8V and 40V.
3. Pin 3 (SW): Switch output pin. Connects to the inductor and freewheeling diode.
4. Pin 4 (Ground): Ground return for the internal circuitry.
5. Pin 5 (Feedback): Connects to the output to regulate the fixed 5V output voltage.
6. Pin 6 (ON/OFF): Enables or disables the device. A high level turns the device on, and a low level turns it off.
7. Pin 7 (No Connect or NC): Generally not connected within the circuit.
8. Pin 8 (Compensation): Provides loop compensation for the control system.
These functions facilitate the device's operation in efficiently converting higher input voltages to a stable 5V output suitable for various electronic applications.
Manufacturer
The LM2674M-5.0 is manufactured by Texas Instruments (TI). Texas Instruments is a global semiconductor company that designs and produces a wide array of analog and embedded processing chips. TI's products are used in a variety of electronic systems and applications, including automotive, industrial, personal electronics, communication equipment, and more. The company is known for its innovation in technology and substantial contributions to the semiconductor industry.
Application
The LM2674M-5.0 is a simple switcher step-down voltage regulator. It is commonly used in applications requiring efficient power conversion from a higher input voltage to a stable 5V output. Key application areas include telecommunications, industrial control systems, battery-powered devices, and automotive electronics. It is well-suited for distributed power systems, point-of-load regulation, and as a power supply for microcontrollers and digital circuits. The regulator's efficiency and compact size make it ideal for use in space-constrained designs.
Equivalent
The LM2674M-5.0 is a step-down voltage regulator with a fixed 5V output and 500mA output current. Equivalent products include the LM2594-5.0 from Texas Instruments, the MC34063A from ON Semiconductor (with external components for 5V output), and the LM7805 linear regulator (though it provides lower efficiency). Ensure compatibility by checking the input voltage range, efficiency, and package type when selecting an equivalent.
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