LTC3892IUH-2#PBF

DC DC Switching Controllers Overview

The LTC3892IUH-2#PBF is a high-performance dual step-down DC/DC switching regulator controller manufactured by Analog Devices Inc. It drives all N-channel synchronous power MOSFET stages to minimize power loss and noise through out-of-phase operation. The device supports an input voltage range of 4.5V to 60V with a supply voltage (Vcc/Vdd) of 4.5V to 60V. It features two output channels with adjustable frequencies ranging from 105kHz to 835kHz for one channel and 350kHz to 535kHz for the other. The maximum duty cycle is 99%. It operates within a junction temperature range of -40°C to 125°C and is housed in a 32-WFQFN exposed pad package.

DC DC Switching Controllers Feature Summary

• Dual independent buck controllers drive all N-channel synchronous power MOSFET stages
• Out-of-phase operation minimizes power loss and input/output noise ripple
• Integrated control features include current limiting, enable, frequency control, power good, soft start, and tracking

DC DC Switching Controllers Applications

• High efficiency dual 5V/12V output synchronous step-down converters
• Dual-phase step-down 5V/8.5V converter designs
• Multiple DC-to-DC topologies including SEPIC and boost applications

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #PBF indicates tube packaging when ordering. Confirm the operating temperature grade corresponds to the IUH variant specifications. Ensure compatibility with the required gate drive voltage levels for the external N-channel MOSFETs selected for the design. Cross-reference the datasheet revision history for any recent component changes.

DC DC Switching Controllers Selection Notes

Select this controller for designs requiring two isolated or related regulated outputs from a single high-voltage rail. The wide input voltage range accommodates various bus architectures. Consider the thermal performance of the 32-QFN package relative to the total output current requirements. Verify that the external components support the specified switching frequency ranges for optimal efficiency.

DC DC Switching Controllers Part Context

This component belongs to the LTC3892 family of dual synchronous step-down controllers. It shares functional similarities with variants like the LTC3892EUH-2 and LTC3892MPUH-2, differing primarily in temperature ratings and packaging options. The family is designed for versatile power management solutions in industrial and computing systems.

DC DC Switching Controllers Replacement Considerations

Direct substitutes include the LTC3892EUH-2#PBF and LTC3892MPUH-2#PBF. Verify that the alternative part number meets the specific thermal and environmental requirements of the application before substitution.