Product Overview: LTC2928IG from Linear Technology

The LTC2928IG by Linear Technology is a sophisticated power supply sequencing controller designed to manage the power-up and power-down sequences of multiple power supplies in complex systems. This device is engineered to ensure that various voltage rails reach their required levels in a precise and controlled sequence, which is crucial for the proper operation of multi-voltage electronics such as CPUs, FPGAs, and DSPs.

Key Features

• Versatile Sequencing Options: The LTC2928IG offers a wide array of sequencing configurations, including ratiometric, coincident, or even user-defined sequences, giving designers the flexibility to meet specific system requirements.
• Four Independent Voltage Rails: It can control up to four independent voltage rails, each with its own enable pin, allowing for individualized sequence timing for each power supply.
• Adjustable Delays and Sequencing: The device includes programmable delays and sequencing intervals through the use of external resistors, ensuring precise timing control for power-up and power-down sequences.
• Power Supply Tracking: The LTC2928IG supports supply tracking with soft-start capability to prevent inrush current issues and ensure a smooth power ramp-up.
• Monitoring and Protection Features: It provides essential monitoring functions, such as undervoltage and overvoltage detection, to safeguard the system against abnormal voltage levels.

Technical Specifications

• Package: The device comes in a 28-lead SSOP package suitable for space-constrained applications.
• Temperature Range: It operates over an industrial temperature range from -40°C to 85°C, ensuring reliable performance in a variety of environments.
• Robust Design: With its rugged design, the LTC2928IG is built to withstand harsh conditions and provide consistent operation over time.

Applications

The LTC2928IG is ideal for use in complex digital systems that require multiple power domains. Its precision and flexibility make it an excellent choice for:

• Telecommunications equipment
• Networking hardware
• Servers and data storage systems
• Industrial control systems
• Medical devices

With its comprehensive feature set and robust design, the LTC2928IG from Linear Technology is a reliable solution for managing the power sequencing requirements of sophisticated electronic systems.