NCP4308DMNTWG

Power Supply Controllers, Monitors Overview

The NCP4308DMNTWG is a synchronous rectifier controller from onsemi, designed for switch-mode power supplies. It supports Flyback topology with one output and operates at a switching frequency of 1 MHz. The device features a maximum duty cycle of 50% and an output voltage of 9.5 V. It provides an output current capability of 8 A. The component functions within a temperature range of -40°C to +125°C and utilizes a DFN-8 surface-mount package.

Power Supply Controllers, Monitors Feature Summary

• Provides self-synchronization for reliable and low-noise synchronous rectification systems
• Features external adjustable minimum off-time and on-time blanking periods for layout flexibility
• Supports Kelvin connection to MOSFETs for efficient full-load operation
• Includes adaptive gate drive clamping and automatic light-load/disable modes

Power Supply Controllers, Monitors Applications

• Laptop adapters
• High power density AC/DC power supplies such as mobile phone chargers
• LCD televisions
• Switch-mode power supplies requiring high efficiency

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix DMNTWG against the manufacturer datasheet to confirm the DFN-8 package variant. Ensure compatibility with the target flyback topology and input voltage ranges. Confirm RoHS compliance status through official documentation before integration into production designs.

Power Supply Controllers, Monitors Selection Notes

Select this controller for applications requiring independent SR control in CCM, DCM, or QR modes. Consider its 8A peak drive capability and robust current detection pin rated up to 150V. Evaluate the need for GaN transistor driving support if applicable to the design requirements.

Power Supply Controllers, Monitors Part Context

This component belongs to the NCP43080 series of synchronous rectifier controllers. It is part of onsemi's portfolio of power management ICs aimed at improving efficiency in secondary-side rectification for various AC/DC converter topologies.

Power Supply Controllers, Monitors Replacement Considerations

Check for NCP43080DDR2G or other NCP43080 variants with different packages like SOIC-8 if pinout compatibility allows. Verify functional equivalence regarding drive strength and timing adjustments before substitution.