LT3782IFE#TRPBF

Overview

The LT3782IFE#TRPBF is a current-mode two-phase boost DC/DC controller manufactured by Analog Devices Inc. It operates within a switching frequency range of 154kHz to 465kHz and supports a maximum duty cycle of 94%. The device features synchronous rectification, clock synchronization capability, and an operating supply voltage range of 6V to 40V. It provides two positive outputs with transistor drivers and includes control characteristics such as enable, reset, and soft start functions. The component is housed in a 28-TSSOP-EP package with an exposed pad and is rated for a junction temperature range of -40°C to 125°C.

Feature Summary

• Implements current-mode control architecture for two-phase boost conversion
• Integrates synchronous rectification to enhance efficiency
• Supports external clock synchronization for system timing alignment
• Includes built-in enable, reset, and soft-start control logic

Applications

• High-density power supplies requiring reduced passive component size
• Systems utilizing high switching frequencies up to 500kHz
• Applications demanding synchronized multi-phase operation
• Industrial equipment operating within wide input voltage ranges

Procurement Notes

Verify the specific suffix TRPBF indicates tape-and-reel packaging configuration distinct from tube variants. Confirm RoHS compliance status and material declaration requirements prior to integration. Ensure the 28-TSSOP-EP thermal pad footprint matches the design layout. Validate that the current-mode control strategy aligns with the target application's transient response needs. Check for any obsolescence notices or recommended replacement parts from the manufacturer.

Selection Notes

Select this controller when system design requires minimizing inductor and capacitor values through high-frequency two-phase operation. Consider the 6V to 40V supply range compatibility with available power sources. Evaluate the need for clock synchronization if multiple converters operate in proximity. Assess thermal management requirements due to the exposed pad package type. Verify that the 94% maximum duty cycle meets the step-up ratio requirements for the intended output voltage.

Part Context

The LT3782 belongs to a family of high-performance DC/DC controllers designed for efficient power conversion. This specific variant focuses on boost topology applications where space and weight savings are critical. The two-phase architecture allows for higher power handling while maintaining low ripple currents. It serves as a core component in modern power management systems requiring precise control and synchronization capabilities.

Replacement Considerations

Official documentation indicates the LT3782 is not recommended for new designs. Contact Analog Devices for potential replacement part numbers suitable for updated projects.