NCP4894FCT1G

Overview

The NCP4894FCT1G is a differential audio power amplifier designed for portable communication devices. It delivers 1.8 W continuous average power to an 8 Ω load from a 5.5 V supply with 10% THD+N, and 1.0 W at 5.0 V with less than 0.01% distortion. Operating voltage ranges from 2.2 V to 5.5 V. The device features ultra-low shutdown current (typical 10 nA), selectable high/low shutdown logic via SD MODE pin, and integrated thermal overload protection set at 160°C. It eliminates output coupling capacitors through bridge-tied-load architecture.

Feature Summary

• Differential amplification architecture eliminates the need for output coupling capacitors
• Selectable shutdown logic allows configuration for either high or low active states
• Integrated circuitry prevents audible pop and click noise during power transitions
• High power supply rejection ratio enables direct connection to battery sources

Applications

• Portable electronic devices
• Personal digital assistants
• Mobile phones

Procurement Notes

Verify the G suffix indicates lead-free construction compatible with Pb-free solder paste processes. Confirm the FC suffix corresponds to the 9-Pin Flip-Chip package type. Ensure design requirements align with the specified operating temperature range of -40°C to +85°C. Validate that the shutdown control interface matches the selected SD MODE pin configuration.

Selection Notes

Select this component for applications requiring high efficiency and minimal external components in space-constrained portable designs. The differential output structure supports higher power delivery compared to single-ended alternatives. Consider the thermal resistance characteristics of the flip-chip package when designing PCB heatsinking strategies for maximum power dissipation scenarios.

Part Context

This device belongs to the NCP4894 family of audio power amplifiers manufactured by onsemi. The family includes variants such as NCP4894DMR2G and NCP4894MNR2G, which share identical functional specifications but differ in packaging formats like Micro-10 and DFN10. All variants maintain the same core performance metrics for portable audio applications.

Replacement Considerations

Public confirmed substitute part numbers include NCP4894FCT1.