LTC3870EUF-1#PBF

DC DC Switching Controllers Overview

The LTC3870EUF-1#PBF is a PolyPhase step-down slave controller manufactured by Analog Devices Inc. It operates within an input voltage range of 4.5 V to 60 V and supports output voltages from 500 mV to 14 V. The device provides two outputs with a maximum current capacity of 20 A per phase. Switching frequencies are adjustable between 100 kHz and 1 MHz. It utilizes a QFN-24 package for surface mount installation. The component functions without a shutdown feature and maintains a load regulation of 0.8%. Operating temperatures span from -40°C to +125°C, with a quiescent supply current of 1.1 mA.

DC DC Switching Controllers Feature Summary

• Designed specifically for multiphase operation with digital power system management DC/DC controllers
• Enables cascading with master controllers to supply very large currents in a compact solution

DC DC Switching Controllers Applications

• Digital power system management applications requiring high current delivery
• PolyPhase buck converter designs utilizing LTC3887-1 master controllers
• High-efficiency multi-phase step-down conversion systems

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and RoHS adherence when sourcing. Confirm the EUF package variant matches the required footprint for PCB layout. Ensure compatibility with the intended master controller, such as the LTC3887-1, for proper PolyPhase synchronization. Check current availability status as distribution may be restricted in certain regions.

DC DC Switching Controllers Selection Notes

Select this component when designing multi-phase buck converters that require precise phase interleaving controlled by a digital master. It is suitable for applications needing scalable current capability through cascaded phases. Consider the 4.5 V to 60 V input range and the 20 A per phase output limit against system requirements. The absence of a shutdown pin should be accounted for in the control logic design.

DC DC Switching Controllers Part Context

This part belongs to the LTC3870 series of PolyPhase slave controllers. It complements master controllers like the LTC3887-1 to create scalable power solutions. The series focuses on providing small, cost-effective footprints while delivering high currents. It is categorized under PMIC switching regulators and step-down controllers within the Analog Devices portfolio.

DC DC Switching Controllers Replacement Considerations

The LTC3870EUFD#PBF serves as a direct functional substitute within the same family, differing primarily in package type.