NCP4304BMNTWG

Power Supply Controllers, Monitors Overview

The NCP4304BMNTWG is a secondary-side synchronous rectification driver manufactured by onsemi, designed for flyback, forward, and half-bridge topologies. It operates with a switching frequency of 500 kHz and supports a maximum duty cycle of 50%. The device delivers an output current of 5 A at a voltage of 4.5 V, featuring rise times of 80 ns and 120 ns, and fall times of 35 ns and 50 ns. It functions within a temperature range of -40°C to +125°C in a DFN-8 package.

Power Supply Controllers, Monitors Feature Summary

• Provides secondary-side synchronous rectification control for isolated power supplies
• Supports multiple converter topologies including flyback, forward, and half-bridge configurations
• Features low quiescent current operation for improved efficiency

Power Supply Controllers, Monitors Applications

• Flyback converter designs
• Forward converter implementations
• Half-bridge power supply architectures

Power Supply Controllers, Monitors Procurement Notes

Verify the obsolete status before procurement as this component may be restricted from new designs. Confirm availability through authorized distributors or surplus channels. Ensure compliance with RoHS standards and check for specific environmental declarations required for your region. Validate that the DFN-8 package matches your PCB footprint requirements.

Power Supply Controllers, Monitors Selection Notes

Select this component for applications requiring secondary-side synchronization in isolated converters. Consider the 500 kHz switching frequency and 5 A drive capability when designing transformer and MOSFET selections. Evaluate the thermal performance within the specified operating temperature range. Compare against newer alternatives if long-term supply stability is a critical project requirement.

Power Supply Controllers, Monitors Part Context

This part belongs to the NCP4304 series of synchronous rectifier controllers from onsemi. It is specifically engineered to replace traditional diode rectifiers in high-efficiency power supplies. The BMNTWG suffix indicates the specific tape and reel packaging configuration for surface-mount assembly.

Power Supply Controllers, Monitors Replacement Considerations

NCP4304AMNTWG is a documented substitute with identical electrical specifications but utilizes a different package variant.