ISL6843IU

Power Supply Controllers, Monitors Overview

The ISL6843IU is a current mode PWM switching controller manufactured by Renesas Electronics, formerly Intersil. It supports Boost and Flyback topologies with a single output. The device operates at a switching frequency of 2 MHz and features a maximum duty cycle of 96%. It provides an output voltage of 20.3 V and an output current of 1 A. The component functions within a temperature range of -40°C to +105°C and is housed in an MSOP-8 surface-mount package.

Power Supply Controllers, Monitors Feature Summary

• Supports Boost and Flyback converter topologies
• Operates with current mode PWM control
• Provides high switching frequency for compact design

Power Supply Controllers, Monitors Applications

• Industrial power supplies
• Telecommunications equipment
• Consumer electronics adapters

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix 'IU' against official datasheets to confirm pinout and thermal characteristics. Confirm RoHS compliance status through manufacturer documentation. Check for End-of-Life notifications or discontinuation notices from Renesas. Ensure compatibility with existing PCB footprints for the MSOP-8 package. Validate supply chain sources for authenticity.

Power Supply Controllers, Monitors Selection Notes

Select this component for applications requiring high-frequency operation in Boost or Flyback configurations. Consider the 1 A output current capability and 20.3 V output voltage limits. Evaluate the MSOP-8 package size constraints against available board space. Assess thermal management requirements for the -40°C to +105°C operating range.

Power Supply Controllers, Monitors Part Context

This part belongs to the ISL6843 series of switching controllers. It is designed for efficient power conversion in space-constrained environments. The series typically includes variants with different packaging or temperature ratings. Intersil was acquired by Renesas Electronics, which continues to support these products.