Analog Devices Inc.

LT3579EFE

LT3579EFE Description

The LT3579EFE from Analog Devices Inc. is a versatile, high-performance switching voltage regulator designed for demanding power management applications. This obsolete IC supports a wide input voltage range of 2.5V to 16V and delivers an adjustable output voltage up to 42V (switch) with a 6A switch current capability. It operates at a switching frequency range of 200kHz to 2.5MHz, enabling flexibility in design optimization for efficiency and component size. The LT3579EFE is housed in a 20-pin TSSOP package and is suitable for surface-mount applications.

LT3579EFE Features

• Multi-Topology Support: Configurable for Boost, Charge Pump, Cuk, Flyback, and SEPIC topologies, providing design versatility.
• Wide Input/Output Range: Accommodates low-voltage inputs (2.5V) and high-voltage outputs (42V), ideal for battery-powered and industrial systems.
• High Current Capability: 6A switch current ensures robust performance in power-hungry applications.
• Adjustable Output: Supports positive or negative output configurations (1.215V min), enabling tailored voltage regulation.
• No Synchronous Rectifier: Simplifies design while maintaining efficiency in non-synchronous applications.
• Compact & Reliable: MSL 1 (Unlimited) moisture sensitivity ensures durability in storage and assembly.

LT3579EFE Applications

• Industrial Power Supplies: Suitable for high-voltage rail generation in automation and control systems.
• LED Drivers: Efficiently powers high-brightness LED arrays requiring adjustable voltage/current.
• Battery-Powered Systems: Ideal for step-up/step-down conversion in portable devices and energy harvesting.
• Automotive Electronics: Supports voltage regulation in infotainment and sensor modules.
• Telecom Infrastructure: Used in power delivery for RF amplifiers and base station equipment.

Conclusion of LT3579EFE

The LT3579EFE stands out for its multi-topology flexibility, wide voltage range, and high-current handling, making it a robust choice for complex power conversion tasks. While now obsolete, its performance remains relevant for legacy designs requiring adaptable, high-efficiency regulation. Engineers in industrial, automotive, and telecom sectors historically leveraged its capabilities for reliable, high-power solutions. For new designs, consider modern alternatives from Analog Devices with enhanced features.