LTC3828EUH#PBF

DC DC Switching Controllers Overview

The LTC3828EUH#PBF is a dual-phase synchronous step-down DC/DC controller from Analog Devices, housed in a 32-lead QFN package. It operates with an input voltage range of 4.5V to 28V and supports output voltages from 800mV to 7V. The device delivers up to 25A per phase with a switchable frequency between 260kHz and 550kHz. Key electrical parameters include a typical quiescent current of 20µA and a maximum duty cycle of 99.4%. It functions within a temperature range of -40°C to +85°C.

DC DC Switching Controllers Feature Summary

• Integrates independent TRACK/SS pins for each controller to manage startup sequencing and track external reference signals.
• Employs a constant frequency current mode architecture that minimizes power loss and noise by operating output stages out-of-phase.
• Features OPTI-LOOP compensation to optimize transient response across a wide range of output capacitance and ESR values.

DC DC Switching Controllers Applications

• Distributed DC power systems requiring synchronized multi-phase regulation
• Battery-operated digital devices needing extended run time via low quiescent current
• Automotive always-on systems utilizing high-efficiency buck conversion

DC DC Switching Controllers Procurement Notes

Verify the specific suffix against official documentation to confirm package type and temperature grade. Ensure compatibility with required input voltage ranges and thermal management solutions. Cross-reference datasheet revisions for any pinout or electrical specification updates prior to integration.

DC DC Switching Controllers Selection Notes

Select this component when dual-phase synchronization and precise tracking are required. Consider the 32-QFN package for space-constrained designs. Evaluate thermal performance at peak loads and ensure the switching frequency aligns with passive component selection criteria for optimal efficiency.

DC DC Switching Controllers Part Context

This part belongs to the PolyPhase series of power management ICs. It complements other models like the LTC3827 and LTC3829 by offering a two-channel solution with integrated tracking capabilities. It serves as a core controller for high-current applications where phase interleaving reduces input ripple.

DC DC Switching Controllers Replacement Considerations

LTC3828EG#PBF offers identical functionality in an SSOP-28 package. Verify footprint compatibility and thermal dissipation requirements when substituting between QFN and SSOP packages.