LTC3890IGN-3#PBF

DC DC Switching Controllers Overview

The LTC3890IGN-3#PBF is a high-performance dual step-down switching regulator DC/DC controller from Analog Devices, designed to drive all N-channel synchronous power MOSFET stages. It operates with an input voltage range of 4V to 60V and supports a constant frequency current mode architecture with a phase-lockable switching frequency between 105kHz and 835kHz. The device features independent output stages that operate out-of-phase to minimize power loss and noise. It includes a precision 0.8V reference, OPTI-LOOP compensation for optimized transient response, and independent TRACK/SS pins for controlled start-up sequencing.

DC DC Switching Controllers Feature Summary

• Dual synchronous buck controller architecture driving N-channel MOSFETs
• Wide 4V to 60V input voltage capability
• Phase-shifted operation to reduce input capacitor ESR losses
• Integrated OPTI-LOOP compensation for stable transient performance

DC DC Switching Controllers Applications

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

DC DC Switching Controllers Procurement Notes

Verify the specific suffix against official documentation to confirm pinout and functional variations. Ensure the SSOP-28 package matches the target PCB footprint. Confirm RoHS compliance status through the manufacturer's material declaration. Validate the operating temperature range requirements against the specific grade indicated in the datasheet before finalizing procurement.

DC DC Switching Controllers Selection Notes

Select this component when a wide input voltage range up to 60V is required for dual-output applications. The device is suitable for designs needing low quiescent current to extend battery life. Consider the SSOP-28 package constraints for thermal management. Verify that the external MOSFET selection aligns with the gate drive capabilities provided by the controller.

DC DC Switching Controllers Part Context

This part belongs to the PolyPhase family of controllers, which utilize multiple phases to distribute load current and improve efficiency. The LTC3890 series is engineered for high-voltage step-down conversions, offering flexibility in switching frequency and synchronization options compared to lower-voltage counterparts in the product line.

DC DC Switching Controllers Replacement Considerations

LTC3890EUH#PBF

DC DC Switching Controllers FAQ

What is the maximum switching frequency supported by the LTC3890IGN-3#PBF?

The device supports a phase-lockable switching frequency of up to 835kHz.

How does the controller manage thermal stress during short-circuit conditions?

It features current foldback functionality that limits MOSFET heat dissipation during short-circuit events.