LTC3890IUH-2#PBF

DC DC Switching Controllers Overview

The LTC3890IUH-2#PBF is a high-performance dual step-down switching regulator DC/DC controller manufactured by Analog Devices Inc. It operates with an input voltage range of 4V to 60V and supports output voltages from 800mV to 24V. The device features a constant frequency current mode architecture with a phase-lockable switching frequency between 105kHz and 835kHz. It delivers up to 15A per channel and maintains a typical no-load quiescent current of 50µA. The component is housed in a 32-lead QFN package and functions within a temperature range of -40°C to +125°C.

DC DC Switching Controllers Feature Summary

• Drives all N-channel synchronous power MOSFET stages for efficient power conversion
• Minimizes input capacitor ESR power loss and noise through out-of-phase operation of two controller output stages
• Features OPTI-LOOP compensation to optimize transient response across wide output capacitance and ESR ranges
• Includes independent TRACK/SS pins for each controller to ramp output voltages during startup

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 against official Analog Devices documentation to confirm exact electrical characteristics and temperature ratings. Ensure the ordering part number matches the required package type and operational specifications. Cross-reference datasheet parameters such as input voltage limits and thermal performance before integration. Confirm availability status through authorized distributors as supply constraints may apply.

DC DC Switching Controllers Selection Notes

Select this controller when designing systems requiring dual independent outputs from a single IC footprint. Consider the low quiescent current for battery-powered applications to extend operating run time. Evaluate the need for phase-lockable frequencies to synchronize with other system clocks. Assess thermal management requirements given the high current capabilities and compact QFN packaging.

DC DC Switching Controllers Part Context

This component belongs to the LTC3890 family, which includes variants like the EUH and MPUH series. These controllers are designed for high-efficiency synchronous buck applications. The IUH variant specifically denotes industrial temperature grade performance. The family supports various topologies including SEPIC and boost configurations depending on external circuitry.

DC DC Switching Controllers Replacement Considerations

LTC3890EUH-2#PBF

DC DC Switching Controllers FAQ

What is the maximum duty cycle supported by the LTC3890IUH-2#PBF?

The device supports a maximum duty cycle of 99%.

How does the LTC3890 handle short-circuit conditions?

It features current foldback functionality to limit MOSFET heat dissipation during short-circuit events.