LTC3805IMSE#TRPBF

DC DC Switching Controllers Overview

The LTC3805IMSE#TRPBF is an adjustable frequency current mode DC/DC controller designed for flyback, boost, and SEPIC converter applications. It drives N-channel MOSFETs with a switching frequency range of 70 kHz to 700 kHz. The device features ±1.5% output voltage accuracy and low quiescent current consumption of 360 μA during normal operation. It supports input voltages up to 100 V via an internal shunt regulator or direct supply from 4.7 V to 8.8 V. Packaged in a 10-lead MSOP with exposed pad, it operates between -40°C and +85°C.

DC DC Switching Controllers Feature Summary

• Supports flyback, boost, and SEPIC topologies with programmable frequency and slope compensation
• Provides ±1.5% output voltage accuracy with integrated soft-start and automatic restart
• Features micropower startup consuming only 40 μA during start-up phase
• Includes programmable overcurrent sensing for overload and short-circuit protection

DC DC Switching Controllers Applications

• Isolated flyback power supplies
• Non-isolated boost converters
• SEPIC DC/DC conversion circuits

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when sourcing. Confirm the IMSE variant meets the required industrial temperature range of -40°C to +85°C. Ensure compatibility with the 10-MSOP-EP footprint. Check current availability status as supply may be limited. Validate RoHS compliance documentation upon receipt.

DC DC Switching Controllers Selection Notes

Select this controller for designs requiring flexible topology support including isolated and non-isolated configurations. The adjustable frequency allows optimization for size and efficiency. Consider the 360 μA quiescent current for battery-operated systems. Verify external component values for the desired switching frequency and slope compensation settings.

DC DC Switching Controllers Part Context

This component belongs to the LTC3805 family of current mode controllers manufactured by Analog Devices. It is part of the broader PMIC portfolio focused on efficient power management solutions. The device complements other regulators in the series by offering versatile converter capabilities in a compact surface-mount package suitable for dense PCB layouts.

DC DC Switching Controllers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.