LTC7800IUDC#PBF

DC DC Switching Controllers Overview

The LTC7800IUDC#PBF is a low quiescent current synchronous buck controller from Analog Devices, designed for high-frequency DC/DC conversion. It operates with an input voltage range of 4V to 60V and supports output voltages from 800mV to 24V. The device features a programmable switching frequency between 320kHz and 2.25MHz, enabling efficient power management in compact designs. It delivers up to 20A of output current and includes integrated gate drivers with rise and fall times of 25ns and 13ns/16ns respectively. Operating within a temperature range of -40°C to +150°C, it utilizes a QFN-20 package for surface-mount installation.

DC DC Switching Controllers Feature Summary

• Synchronous buck topology with integrated high-side and low-side gate drivers
• Low quiescent current operation for enhanced efficiency in standby modes
• Programmable switching frequency allowing optimization for size and performance
• Non-isolated design suitable for standard step-down applications

DC DC Switching Controllers Applications

• Industrial power supply systems
• Telecommunications infrastructure equipment
• Automotive electronics control units
• Point-of-load regulation modules

DC DC Switching Controllers Procurement Notes

Verify the specific suffix 'IUDC' against official Analog Devices documentation to confirm industrial temperature rating and tube packaging format. Ensure compatibility with existing board layouts regarding the QFN-20 footprint and thermal pad requirements. Cross-reference the datasheet for any recent revisions that may affect pinout or electrical characteristics before finalizing procurement orders.

DC DC Switching Controllers Selection Notes

Select this component when designing non-isolated step-down converters requiring wide input voltage ranges up to 60V. Consider the 320kHz to 2.25MHz frequency range for balancing electromagnetic interference and passive component size. Evaluate the 20A current capability against peak load demands and ensure adequate thermal dissipation for the QFN-20 package under maximum operating conditions.

DC DC Switching Controllers Part Context

This part belongs to the LTC7800 series of synchronous buck controllers, characterized by low quiescent current and high-frequency operation. It is distinct from boost or SEPIC variants within the broader Analog Devices portfolio. The IUDC designation indicates industrial grade performance and specific packaging, differentiating it from other temperature ratings or reel formats available in the same family.

DC DC Switching Controllers Replacement Considerations

Consult official Analog Devices substitution guides for verified equivalents. Direct replacements must match the synchronous buck topology, 60V input limit, and QFN-20 package dimensions. Verify that alternative parts support the required 320kHz to 2.25MHz frequency range and 20A output capability without compromising thermal performance.