Texas Instruments

LM2611AMFX  

DC Switching Voltage Regulators

LM2611AMFX Description

The LM2611AMFX from Texas Instruments is a high-efficiency, 1.4MHz switching frequency, Cuk topology DC-DC voltage regulator designed to deliver adjustable negative output voltage with a 1.2A output current capability. This surface-mount IC operates over a wide input voltage range of 2.7V to 14V, making it suitable for a variety of power supply applications. Packaged in a compact SOT23-5 form factor and available in Tape & Reel (TR), it is optimized for space-constrained designs. Although marked as obsolete, it remains a reliable choice for legacy systems due to its robust performance and REACH Unaffected compliance.

LM2611AMFX Features

• Cuk Topology: Efficiently generates negative output voltages with minimal external components.
• High Switching Frequency (1.4MHz): Enables the use of smaller inductors and capacitors, reducing board space.
• Wide Input Range (2.7V–14V): Supports diverse power sources, including batteries and regulated supplies.
• 1.2A Output Current: Suitable for moderate power applications requiring stable negative voltage.
• Non-Synchronous Rectification: Simplifies design while maintaining efficiency.
• MSL 1 (Unlimited): Ideal for extended storage and handling in manufacturing environments.
• Compact SOT23-5 Package: Perfect for portable and space-sensitive applications.

LM2611AMFX Applications

The LM2611AMFX excels in systems requiring negative voltage rails, such as:

• OLED Displays: Provides efficient bias voltage for display drivers.
• Audio Amplifiers: Generates clean negative supplies for op-amps and analog circuits.
• Industrial Sensors: Powers isolated or differential signal conditioning circuits.
• Portable Devices: Compact size and efficiency make it ideal for battery-operated equipment.
• Legacy Systems: A dependable solution for maintaining or repairing older designs.

Conclusion of LM2611AMFX

The LM2611AMFX stands out for its Cuk topology, high switching frequency, and compact design, offering a balanced mix of performance and integration. While obsolete, its wide input range and 1.2A output capability ensure relevance in niche applications like display biasing, audio systems, and portable electronics. Engineers seeking a proven, space-efficient negative voltage regulator will find this IC a practical choice, despite its discontinued status.

LM2611AMFX Documents

Download datasheets and manufacturer documentation for LM2611AMFX

Datasheets :

LM2611      

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LM2611