NCP4354BDR2G

Power Supply Controllers, Monitors Overview

The NCP4354BDR2G is a secondary side controller for Switch-Mode Power Supplies (SMPS) designed to minimize standby power consumption. It operates in OFF mode to regulate output voltage during light load conditions, eliminating the need for current regulation circuitry. The device supports flyback and forward topologies with a maximum duty cycle of 50%. It features a wide operating supply voltage range from 3.5 V to 36 V and maintains an accuracy of 0.5%. The component functions within a temperature range of 0°C to +125°C and is housed in an 8-SOIC package.

Power Supply Controllers, Monitors Feature Summary

• Secondary side control for low standby power adapters
• OFF mode operation for light load efficiency
• Integrated voltage regulation without external current sensing

Power Supply Controllers, Monitors Applications

• Low standby power AC/DC adapters
• Flyback converter secondary side control
• Forward converter secondary side control

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix 'B' against the manufacturer's latest datasheet to confirm pinout and electrical characteristics, as suffixes often denote tape-and-reel packaging or specific temperature grades. Confirm RoHS compliance status directly with onsemi documentation. Ensure the SOIC-8 footprint matches your PCB design constraints. Cross-reference the Mouser number 863-NCP4354BDR2G for accurate distributor identification.

Power Supply Controllers, Monitors Selection Notes

Select this component when designing power supplies requiring minimal no-load power consumption without complex current regulation loops. It is suitable for applications where secondary side control is preferred over primary side regulation for better line/load regulation. Consider the 0.5% accuracy requirement and the 36 V maximum supply voltage limit. Evaluate thermal performance within the specified 0°C to +125°C operating range for the target environment.

Power Supply Controllers, Monitors Part Context

This part belongs to the NCP4354 series of secondary side controllers. It is functionally related to the NCP4355, which adds current regulation capabilities. The NCP4354 focuses specifically on voltage regulation in OFF mode to achieve ultra-low standby power. It is distinct from primary side controllers like the NCP1225, offering direct secondary side feedback integration.

Power Supply Controllers, Monitors Replacement Considerations

The NCP4354ADR2G is a documented variant within the same family. Verify if the 'A' suffix differs in packaging or specific electrical tolerances compared to the 'B' suffix. No other direct cross-model replacements are confirmed in public documentation.