LT8471HFE#TRPBF

Overview

The LT8471HFE#TRPBF is a dual-channel, multi-topology DC/DC converter manufactured by Analog Devices Inc. It integrates two internal 2A, 50V power switches and an additional 500mA Skyhook switch to simplify buck and negative output conversions. The device supports input voltage ranges from 2.6V to 50V. Each 2A primary channel can be independently configured as a buck, boost, SEPIC, ZETA, flyback, or inverting converter. It operates with fixed frequency PWM controlled by the RT pin or synchronized to an external clock. The component is housed in a 20-lead TSSOP package.

Feature Summary

• Dual 2A and one 500mA internal power switch channels
• Flexible topology configuration for primary channels including buck, boost, SEPIC, ZETA, flyback, and inverting modes
• Skyhook channel efficiently generates boosted input voltage
• Anti-phase switching capability reduces input ripple

Applications

• Local power supply designs requiring multiple voltage rails
• Systems needing simultaneous positive and negative outputs from a single input
• Applications utilizing SEPIC or ZETA topologies for wide input range regulation
• Flyback converter implementations for isolated power generation

Procurement Notes

Verify the specific suffix TRPBF indicates tape and reel packaging when sourcing. Confirm the HFE grade meets required operating temperature specifications for your application environment. Cross-reference the manufacturer part number LT8471HFE#TRPBF with official Analog Devices documentation to ensure compatibility with your design requirements before finalizing procurement decisions.

Selection Notes

Select this component when designing local power supplies that require flexible topology options such as buck, boost, or flyback within a single IC. It is suitable for applications needing both positive and negative outputs from a single input rail. Consider the 2A current capacity of the primary channels and the 500mA Skyhook channel when sizing external components. Ensure the 2.6V to 50V input range aligns with your system's power availability.

Part Context

The LT8471 belongs to the Linear Technology (now Analog Devices) family of multi-topology DC/DC converters. It is designed to replace discrete solutions or multiple dedicated controllers by integrating several switching functions into one package. This integration simplifies board space requirements and reduces component count in complex power management architectures.

Replacement Considerations

Check for direct substitutes within the LT8471 series with different package options or temperature grades. Verify if other multi-topology converters from Analog Devices offer similar current ratings and topology support if exact matches are unavailable.