LTC3890MPUH#TRPBF

DC DC Switching Controllers Overview

The LTC3890MPUH#TRPBF is a high-performance dual step-down switching regulator DC/DC controller from Analog Devices Inc., designed to drive all N-channel synchronous power MOSFET stages. It operates within an input voltage range of 4V to 60V and supports two independent outputs with a maximum duty cycle of 99%. The device utilizes a constant frequency current mode architecture, allowing for a phase-lockable switching frequency between 105kHz and 835kHz. It features a 32-WFQFN package with exposed pad, operating reliably across a temperature range of -55°C to 150°C.

DC DC Switching Controllers Feature Summary

• Dual output configuration with independent TRACK/SS pins for synchronized ramping during start-up
• OPTI-LOOP® compensation technology optimizes transient response over wide output capacitance ranges
• Current foldback mechanism limits MOSFET heat dissipation during short-circuit conditions
• Minimized power loss and noise through out-of-phase operation of the two controller output stages

DC DC Switching Controllers Applications

• Automotive always-on systems
• Battery-operated digital devices
• Distributed DC power systems

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing components. Confirm that the MP grade designation corresponds to the extended industrial temperature range requirements of your design. Ensure compatibility with the 32-QFN footprint dimensions during PCB layout preparation. Cross-reference the manufacturer datasheet for any recent product change notices regarding assembly or material declarations before finalizing procurement orders.

DC DC Switching Controllers Selection Notes

Select this component for applications requiring dual isolated rails from a single high-voltage source. The wide input voltage range accommodates various bus architectures. Consider the thermal performance of the QFN package in high-current designs. Verify that the required switching frequency falls within the programmable range. Evaluate the need for phase control features to minimize input capacitor ripple current in sensitive environments.

DC DC Switching Controllers Part Context

This part belongs to the PolyPhase series of power management ICs. It is functionally related to other variants in the LTC3890 family, such as the EUH and M versions, which may differ in temperature ratings or packaging formats. The device serves as a core controller in complex power distribution networks, distinct from integrated converter modules by requiring external MOSFETs and passive components.

DC DC Switching Controllers Replacement Considerations

LTC3890EUH#PBF and LTC3890MPUH-2#TRPBF are documented variants within the same family. Verify pinout compatibility and electrical specifications before substitution. Note that suffix changes may indicate differences in packaging type or temperature grade rather than functional alterations.