Linear Technology LTC3858EGN-1 High Performance Dual Step-Down Switching Regulator

The LTC3858EGN-1 is a high-performance, dual step-down switching regulator integrated circuit designed by Linear Technology, a brand synonymous with precision, reliability, and innovation in the field of analog integrated circuits. This versatile component is engineered to cater to a wide range of power supply applications, including distributed power systems, DSL modems, networking equipment, and industrial supplies.

Key Features

• Wide Input Voltage Range: The LTC3858EGN-1 operates efficiently with an input voltage range from 4.5V to 38V, making it suitable for a variety of applications that require a robust input tolerance.
• Dual Output Channels: It provides two output channels, each capable of delivering up to 3A of continuous output current, which can be set by the user from 0.8V to 24V.
• Adjustable Switching Frequency: Users can set the switching frequency anywhere from 50kHz to 900kHz, or it can be synchronized to an external clock within the same range, providing design flexibility and optimization for efficiency and component size.
• No RSENSE Operation: This regulator utilizes a current mode architecture that allows for the elimination of sense resistors, reducing the bill of materials and simplifying the design.
• Low Dropout Operation: The LTC3858EGN-1's low dropout operation ensures continued functionality even under circumstances where the input voltage comes close to the output voltage, enhancing performance during battery-powered operations.
• Protection Features: It includes a range of protection features such as overvoltage, undervoltage lockout, overcurrent, and overtemperature protection, ensuring the reliability and longevity of both the regulator and the overall system.

Package and Thermal Performance

The LTC3858EGN-1 is offered in a compact 28-lead SSOP package, which is optimized for thermal performance without compromising on space. This packaging allows for efficient heat dissipation, contributing to the stability and performance of the regulator in various operating conditions.

Applications

With its dual-channel capability, wide input voltage range, and comprehensive protection features, the LTC3858EGN-1 is an excellent choice for designers looking to create efficient and reliable power solutions in a compact form factor. Its versatility makes it ideal for a broad spectrum of applications, from simple to complex power supply designs.