Texas Instruments

LM3671MFX-1.25  

DC Switching Voltage Regulators

LM3671MFX-1.25 Description

The LM3671MFX-1.25 is a fixed-output, positive buck DC switching voltage regulator designed by Texas Instruments. This regulator is part of the LM3671 family and offers a robust and efficient solution for power management in various electronic applications. The LM3671MFX-1.25 features a fixed output voltage of 1.25V and is capable of delivering a continuous output current of up to 600mA. It operates over a wide input voltage range from 2.7V to 5.5V, making it suitable for a variety of power supply scenarios.

The regulator employs a high-frequency switching topology at 2MHz, which allows for the use of smaller inductors and capacitors, thereby reducing the overall footprint and cost of the power supply solution. Additionally, the LM3671MFX-1.25 incorporates a synchronous rectifier, enhancing its efficiency and performance. The device is packaged in a compact SOT23-5 surface-mount package, which is ideal for space-constrained designs.

LM3671MFX-1.25 Features

• Output Type: Fixed, providing a stable 1.25V output voltage.
• Input Voltage Range: 2.7V to 5.5V, ensuring compatibility with a wide range of input power sources.
• Output Current: Capable of delivering up to 600mA, suitable for powering various electronic components.
• Switching Frequency: 2MHz, enabling the use of smaller external components and reducing the solution size.
• Synchronous Rectifier: Enhances efficiency and reduces power loss.
• Output Configuration: Positive, ensuring compatibility with most electronic systems.
• Package Type: SOT23-5, a compact surface-mount package ideal for space-constrained applications.
• Moisture Sensitivity Level (MSL): Level 1 (Unlimited), indicating the device is not moisture-sensitive and can be stored without special handling.
• REACH Status: REACH Unaffected, ensuring compliance with environmental and chemical regulations.
• Product Status: Obsolete, but still available for existing designs and legacy systems.

LM3671MFX-1.25 Applications

The LM3671MFX-1.25 is ideal for applications requiring a compact, efficient power supply solution. Its fixed output voltage and high switching frequency make it particularly suitable for:

• Portable Devices: Such as smartphones, tablets, and other handheld electronics where space and efficiency are critical.
• Embedded Systems: In microcontrollers, sensors, and other embedded applications where a stable power supply is essential.
• Consumer Electronics: In devices like digital cameras, MP3 players, and other consumer electronics that require a reliable and efficient power management solution.
• Industrial Applications: In control systems, instrumentation, and other industrial applications where a compact and efficient power supply is necessary.

Conclusion of LM3671MFX-1.25

The LM3671MFX-1.25 from Texas Instruments is a highly efficient and compact DC switching voltage regulator designed for applications requiring a fixed 1.25V output. Its wide input voltage range, high switching frequency, and synchronous rectifier make it an excellent choice for space-constrained and power-sensitive designs. Although now obsolete, the LM3671MFX-1.25 remains a reliable option for existing systems and legacy applications. For new designs, engineers may consider exploring alternative solutions from Texas Instruments that offer similar performance benefits with updated features and support.

LM3671MFX-1.25 Documents

Download datasheets and manufacturer documentation for LM3671MFX-1.25

Datasheets :

LM3671(Q)