LTC3890HGN-1#TRPBF

DC DC Switching Controllers Overview

The LTC3890HGN-1#TRPBF is a high-performance dual step-down switching regulator DC/DC controller from Analog Devices. It drives all N-channel synchronous power MOSFET stages using a constant frequency current mode architecture with a phase-lockable frequency up to 850kHz. The device operates with an input voltage range of 4V to 60V and provides two independent outputs adjustable from 0.8V to 24V, supporting up to 15A per channel. It features a typical sleep mode quiescent current of 50µA and a shutdown current of 14µA. The controller utilizes OPTI-LOOP® compensation for optimized transient response and includes independent TRACK/SS pins for each controller.

DC DC Switching Controllers Feature Summary

• Dual output synchronous buck control with out-of-phase operation to minimize input capacitor ESR losses
• OPTI-LOOP® compensation allows transient response optimization over wide output capacitance ranges
• Independent TRACK/SS pins enable synchronized ramping of output voltages during startup
• Current foldback 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 HGN-1 against official datasheets to confirm package type and temperature grade. Confirm availability status as supply may be limited or subject to factory special orders. Ensure compatibility with required operating temperatures and pinout configurations before integration.

DC DC Switching Controllers Selection Notes

Select this component for applications requiring dual isolated rails from a high-voltage bus. The low quiescent current extends battery life in portable systems. Verify that the external MOSFETs can handle the peak currents supported by the controller's drive capability and thermal constraints.

DC DC Switching Controllers Part Context

This part belongs to the LTC3890 series of PolyPhase controllers designed for high-efficiency power conversion. It is distinct from single-output variants and higher-pin-count packages within the same family, offering a compact solution for dual-rail requirements in space-constrained designs.

DC DC Switching Controllers Replacement Considerations

LTC3890EUH#PBF and LTC3890IUH#PBF are functionally similar dual-channel controllers within the same series but differ in package type and industrial temperature ratings.