The LM26420XMHX is a highly integrated, high-efficiency synchronous buck regulator from Texas Instruments (formerly National Semiconductor). This device is designed to provide a complete power management solution for a variety of applications, offering both high efficiency and a small solution size. It integrates the power MOSFETs, control circuitry, and compensation components into a single package.

Applications

• Point-of-load regulators: Provides efficient power conversion for various point-of-load applications.
• Set-top boxes: Powers the core logic and peripherals in set-top boxes.
• Networking equipment: Supplies power to network processors, ASICs, and memory.
• Computing systems: Used in powering CPUs, GPUs, and other critical components in computers.
• Industrial control systems: Powers sensors, microcontrollers, and other devices in industrial environments.

Features

• High efficiency: Achieves high efficiency across a wide load range, reducing power dissipation and heat generation.
• Integrated MOSFETs: Simplifies the design and reduces the board space.
• Adjustable output voltage: Allows the output voltage to be adjusted to meet specific application requirements.
• Overcurrent protection: Protects the regulator and the load from damage due to overcurrent conditions.
• Thermal shutdown: Shuts down the regulator in case of over-temperature conditions, preventing damage.

Benefits

• Reduced system cost: Integration of components reduces the external component count, lowering the bill of materials (BOM) cost.
• Improved system reliability: Protection features such as overcurrent and thermal shutdown enhance system reliability.
• Simplified design: Integrated MOSFETs and compensation components simplify the design process.
• Increased efficiency: High efficiency reduces power dissipation and improves overall system performance.
• Small solution size: Compact package size reduces the required board space.

Additional Details

The LM26420XMHX typically operates with an input voltage range of 4.5V to 20V and can provide an output current of up to 2A. It features a switching frequency of 500 kHz. The device is available in a thermally enhanced HTSSOP package. Comprehensive datasheets including thermal characteristics and efficiency curves should be consulted for design and application.