KA3842AES

AC DC Converters, Offline Switchers Overview

The KA3842AES is an off-line current mode PWM control circuit manufactured by onsemi. It operates with a switching frequency up to 500kHz and features a supply voltage range of 10V to 30V. The device initiates operation at a start-up voltage of 16V and supports a maximum duty cycle of 96%. Packaged in an 8-DIP (0.300 inch) through-hole housing, it functions within an ambient temperature range of 0°C to 70°C. This component serves as a fixed-frequency controller for offline power supplies.

AC DC Converters, Offline Switchers Feature Summary

• Implements current mode pulse width modulation control for offline converter applications
• Includes undervoltage lockout mechanism to ensure stable startup and shutdown sequences
• Provides internal current limiting protection for enhanced operational safety

AC DC Converters, Offline Switchers Applications

• Offline flyback converter designs
• Forward converter topologies
• General-purpose AC-DC power supply units

AC DC Converters, Offline Switchers Procurement Notes

Verify the obsolete status of this specific part number before initiating any procurement process. Confirm that the 8-DIP package dimensions match your existing board layout requirements. Ensure compatibility with your target operating temperature range of 0°C to 70°C. Check for available alternative components from the same manufacturer family if new production is required.

AC DC Converters, Offline Switchers Selection Notes

Select this component for applications requiring fixed-frequency current mode control without an integrated power switch. Consider the 8-DIP package constraints for through-hole assembly processes. Evaluate the 10V to 30V supply voltage range against your auxiliary winding capabilities. Assess the thermal performance within the specified 0°C to 70°C ambient temperature limits for your enclosure design.

AC DC Converters, Offline Switchers Part Context

This device belongs to the KA3842 series of current mode PWM controllers produced by onsemi. It shares functional similarities with other industry-standard controllers but is distinguished by its specific pinout and electrical characteristics. The series is designed for cost-effective offline power conversion solutions requiring reliable current mode regulation.

AC DC Converters, Offline Switchers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Due to the obsolete status, verify cross-reference availability directly with authorized distributors or consider redesigning with currently active equivalents.