LTC3895IFE

DC DC Switching Controllers Overview

The LTC3895IFE is a synchronous step-down DC/DC controller from Analog Devices, designed for high-voltage applications with an input range of 4V to 140V. It supports output voltages from 800mV to 60V and delivers up to 10A of output current. The device features a low quiescent current of 40µA and operates at switching frequencies up to 900kHz. Packaged in a 38-lead TSSOP-EP, it 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 high efficiency
• Features constant frequency current mode architecture with phase-lock capability
• Supports wide input voltage ranges up to 140V

DC DC Switching Controllers Applications

• High voltage industrial power supplies
• Telecommunications infrastructure equipment
• Automotive battery management systems

DC DC Switching Controllers Procurement Notes

Verify the specific suffix (e.g., #PBF) against official manufacturer documentation to confirm lead-free compliance and package type. Ensure the selected variant matches the required thermal performance and pinout configuration for the target PCB layout. Cross-reference the datasheet revision date to confirm compatibility with design specifications.

DC DC Switching Controllers Selection Notes

Select this component when designing buck converters requiring operation from high input voltages up to 140V. Consider the 38-lead TSSOP-EP package for adequate thermal dissipation and the 10A output current capability. Evaluate the 900kHz switching frequency option against EMI constraints and inductor size requirements for the specific application topology.

DC DC Switching Controllers Part Context

This part belongs to the LTC3895 series of high-performance synchronous step-down controllers. It is distinct from lower-voltage counterparts like the LTC3855, which supports only up to 38V inputs. The device is often evaluated using reference designs such as the DC2117A demo board.

DC DC Switching Controllers Replacement Considerations

Direct substitutes include the LTC3895EFE and LTC3895HFE variants within the same family. These parts share identical functional characteristics but may differ in temperature grade or packaging options.