NCP4304ADR2G

Power Supply Controllers, Monitors Overview

The NCP4304ADR2G is a secondary-side synchronous rectification driver manufactured by onsemi, designed for flyback, forward, and half-bridge topologies. It operates with a single output in an SOIC-8 package. The device supports a switching frequency of 500 kHz with a maximum duty cycle of 50%. It delivers an output current of 5 A at a voltage of 4.5 V. Operating temperatures range from -40°C to +125°C. Supply voltage spans 9.5V to 30V with quiescent current of 35 uA. Rise times are 80 ns and 120 ns; fall times are 35 ns and 50 ns.

Power Supply Controllers, Monitors Feature Summary

• Provides secondary-side control and protection functions for synchronous rectifier operation
• Integrates accurate TL431-type shunt regulator functionality
• Supports non-isolated applications with high efficiency improvements

Power Supply Controllers, Monitors Applications

• Flyback converter implementations
• Space-conscious adapters and chargers
• Set-top box power supplies

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix 'ADR2G' against official onsemi documentation to confirm RoHS compliance and tape/reel specifications. Ensure the SOIC-8 package dimensions match design constraints. Confirm that the 500 kHz switching frequency aligns with system requirements. Check for any recent PCN updates regarding wafer fab or copper wire changes before finalizing procurement.

Power Supply Controllers, Monitors Selection Notes

Select this component for designs requiring integrated secondary-side control without external shunt regulators. Compare against NCP4303ADR2G if shutdown features are unnecessary. Verify compatibility with flyback, forward, or half-bridge topologies. Ensure the 5 A output current capability meets load demands. Consider the 35 uA quiescent current for low-power standby applications.

Power Supply Controllers, Monitors Part Context

Part of the NCP4304 series, this IC serves as a dedicated solution for enhancing efficiency in isolated power converters. It replaces traditional diode-based rectification with active synchronous control. The series targets cost-sensitive applications where space and thermal performance are critical constraints.

Power Supply Controllers, Monitors Replacement Considerations

NCP4303ADR2G is listed as a direct substitute.