The XRP7657E is a high-efficiency, synchronous step-down DC-DC regulator from Exar Corporation. It is designed to provide a compact and cost-effective power solution for a variety of applications. This regulator integrates high-side and low-side MOSFETs to improve efficiency and reduce external component count.

Applications

• Point-of-Load Regulators
• Set-Top Boxes
• Networking Equipment
• Industrial Power Supplies
• Portable Devices

Features

• Wide Input Voltage Range: 4.5V to 18V
• Adjustable Output Voltage
• High Efficiency: Up to 95%
• Integrated High-Side and Low-Side MOSFETs
• Adjustable Switching Frequency
• Overcurrent Protection (OCP)
• Overvoltage Protection (OVP)
• Thermal Shutdown
• Enable Input
• Power Good Output
• Compact Package

Benefits

• High Efficiency: Minimizes power dissipation and improves overall system efficiency, leading to longer battery life in portable applications.
• Wide Input Voltage Range: Allows for use in a variety of power systems with varying input voltage requirements.
• Integrated MOSFETs: Reduces external component count and simplifies the design process, resulting in a smaller and more cost-effective solution.
• Protection Features: Enhances system reliability by protecting against overcurrent, overvoltage, and thermal overload conditions.
• Adjustable Parameters: Allows for fine-tuning of the output voltage and switching frequency to optimize performance for specific applications.

Technical Specifications

The XRP7657E operates with an input voltage range of 4.5V to 18V and can provide an adjustable output voltage. The switching frequency can also be adjusted. The device integrates overcurrent protection (OCP), overvoltage protection (OVP), and thermal shutdown features to ensure reliable operation. The XRP7657E also includes an enable input for controlling the regulator's operation and a power good output signal to indicate the status of the output voltage.