LTC3890MPUH-2#TRPBF

DC DC Switching Controllers Overview

The LTC3890MPUH-2#TRPBF is a dual-phase synchronous step-down DC/DC controller from Analog Devices, designed for high-performance power management. It operates with an input voltage range of 4V to 60V and supports output voltages from 800mV to 24V. The device features a switch frequency adjustable between 105kHz and 835kHz, with a typical no-load quiescent current of 50µA in sleep mode and 60µA in shutdown. It delivers up to 15A output current per phase and includes independent TRACK/SS pins for synchronized startup. Packaged in a 32-QFN (5x5mm) with exposed pad, it functions within a junction temperature range of -55°C to +150°C.

DC DC Switching Controllers Feature Summary

• Dual-channel architecture enables out-of-phase operation to minimize input capacitor ESR losses and noise.
• OPTI-LOOP compensation optimizes transient response across wide output capacitance and ESR variations.
• Independent control channels feature dedicated TRACK/SS pins for precise voltage ramping during startup.
• Current foldback protection limits MOSFET heat dissipation during short-circuit conditions.

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 confirms tape-and-reel packaging when ordering. Confirm the MP grade indicates military/extended temperature specifications (-55°C to +150°C). Ensure compatibility with the required 32-QFN footprint and thermal pad soldering requirements. Cross-reference the manufacturer datasheet for any recent package or material changes.

DC DC Switching Controllers Selection Notes

Select this component for applications requiring dual isolated outputs from a single high-voltage rail. The low quiescent current makes it suitable for battery-powered systems where standby efficiency is critical. The wide input voltage range accommodates various bus architectures. Consider the thermal performance of the QFN package and the need for external N-channel MOSFETs.

DC DC Switching Controllers Part Context

This part belongs to the LTC3890 family of PolyPhase controllers. It shares architectural similarities with the LTC3890EUH-2#PBF but differs in grading and packaging. The MP designation signifies extended temperature and reliability standards compared to commercial variants. It complements other buck controllers like the LTC3809 series for different channel counts and voltage ranges.

DC DC Switching Controllers Replacement Considerations

LTC3890EUH-2#PBF is a direct functional equivalent with identical electrical characteristics, differing primarily in tube packaging instead of tape-and-reel. Designers must verify that the change in packaging format does not impact automated assembly processes or storage handling requirements.

DC DC Switching Controllers FAQ

What is the maximum duty cycle supported by the LTC3890MPUH-2#TRPBF?

The device supports a maximum duty cycle of 99%.

Does the LTC3890MPUH-2#TRPBF support clock synchronization?

No, this specific model does not feature clock synchronization capabilities.