The LM2651MTC-2.5 is a SIMPLE SWITCHER® Step-Down Voltage Regulator manufactured by National Semiconductor (now part of Texas Instruments). It's designed to convert a higher input voltage to a lower output voltage of 2.5V with high efficiency. The device is commonly used in portable devices, power supplies, and other applications requiring efficient voltage regulation.

Applications

• Point of Load Regulation
• Portable/Palmtop Computers
• Hard Disk Drives
• High Efficiency Step-Down Regulator
• Battery Chargers

Features

• Input Voltage Range: 4.5V to 26V
• Output Voltage: 2.5V (Fixed)
• High Efficiency: Up to 96%
• 1.5A Output Current Capability
• Current Mode Operation for Excellent Transient Response
• Internal Compensation
• Thermal Shutdown and Current Limit Protection
• Available in a small outline package (TSSOP)

Benefits

• High efficiency reduces power loss and heat dissipation
• Wide input voltage range provides flexibility in application
• Fixed output voltage simplifies design
• Small package size saves board space
• Robust protection features enhance system reliability

Additional Details

The LM2651MTC-2.5 is a high-efficiency step-down voltage regulator that converts an input voltage between 4.5V and 26V to a fixed output voltage of 2.5V. The high efficiency of up to 96% minimizes power loss and heat dissipation, making it suitable for battery-powered and energy-sensitive applications. The device can deliver up to 1.5A of output current, providing sufficient power for a variety of loads. The current mode operation ensures excellent transient response, allowing the regulator to quickly adapt to changes in load current. The internal compensation simplifies the design by eliminating the need for external compensation components. The thermal shutdown and current limit protection features enhance system reliability by protecting the regulator from over-temperature and over-current conditions. The LM2651MTC-2.5 is available in a small outline package (TSSOP), saving valuable board space. It is commonly used in applications requiring efficient voltage regulation, such as portable computers, hard disk drives, and battery chargers.

The device is designed to meet the requirements of various industry standards for voltage regulators. The high efficiency is achieved through advanced circuit design techniques and optimized manufacturing processes. The current mode operation provides excellent transient response and stability. The internal compensation simplifies the design and reduces the number of external components. The thermal shutdown and current limit protection features protect the regulator from damage in the event of over-temperature or over-current conditions. The LM2651MTC-2.5 provides a reliable and cost-effective solution for step-down voltage regulation.