LT8301JS5#WTRPBF

Overview

The LT8301JS5#WTRPBF is an ultra-low quiescent current, no-optocoupler isolated flyback converter from Analog Devices. It operates with a maximum input voltage of 42V and supports output voltages up to 65V. The device integrates a 1.2A switch and functions without an optocoupler or transformer feedback winding, utilizing primary-side regulation. It is housed in a TSOT-23-5 package and holds AEC-Q100 qualification for automotive applications.

Feature Summary

• Eliminates the need for optocouplers and auxiliary windings through integrated primary-side regulation
• Achieves high efficiency via ultra-low quiescent current operation
• Supports negative output configurations alongside positive outputs
• Integrated 1.2A power switch simplifies external component count

Applications

• Automotive infotainment systems requiring isolated power rails
• Industrial sensor interfaces needing galvanic isolation
• Medical equipment with strict safety isolation requirements
• Battery-powered devices demanding minimal standby power consumption

Procurement Notes

Verify the specific suffix WTRPBF confirms the tape-and-reel packaging format and lead-free status. Confirm AEC-Q100 qualification aligns with target automotive reliability standards. Ensure the TSOT-23-5 footprint matches the design layout. Check for any recent product change notices affecting pinout or electrical characteristics.

Selection Notes

Select this component when board space is limited due to the compact TSOT-23-5 package. Choose this part for applications requiring isolation without the complexity of secondary-side control loops. Consider the 42V input limit and 65V output capability against system voltage margins. Evaluate thermal performance within the small package for the expected load conditions.

Part Context

This part belongs to the LT8301 family of no-opto isolated flyback converters. It shares core functionality with variants like the LT8301IS5 but differs in package type and temperature range specifications. The series targets cost-sensitive, space-constrained designs where traditional optocoupler-based solutions are too large or expensive.

Replacement Considerations

LT8301IS5#WTRPBF: Identical function in standard TSOT-23-5 package; verify temperature grade differences.