NCP2820FCT1G

Overview

The NCP2820FCT1G is a mono Class-D audio power amplifier in a 9-pin flip-chip CSP package. It delivers up to 2.65 W continuous average power to a 4.0 Ω load from a 5.0 V supply, or 1.4 W to an 8.0 Ω load with less than 1% THD+N. Operating on a 2.5 V to 5.5 V supply, it features a typical quiescent current of 2.15 mA and shutdown current under 1.5 µA. The device utilizes a PWM modulation scheme for filterless operation with inductive transducers.

Feature Summary

• Filterless capability eliminates the need for output LC filters when driving inductive transducers.
• Fully differential input design removes the requirement for input coupling capacitors.
• Advanced turn-on and turn-off techniques prevent audible pop and click noise during transitions.
• Integrated current breaker circuit protects against excessive load currents and short circuits.

Applications

• Cellular handsets
• Portable electronic devices
• PDAs and smartphones
• Portable computers

Procurement Notes

Verify the specific suffix FCT1G corresponds to the 9-pin flip-chip CSP package (Case 499AL) as defined in the datasheet ordering information. Confirm that the component meets the required thermal and electrical specifications for the target application environment before finalizing procurement.

Selection Notes

Select this component for applications requiring high efficiency and minimal external components. The fully differential architecture simplifies board layout by removing input capacitors. Ensure the total equivalent capacitance at the output remains below 150 pF to maintain optimal sound quality in filterless configurations.

Part Context

This part belongs to the NCP2820 series of cost-effective Class-D amplifiers. It is designed to replace traditional Class-AB amplifiers in portable devices to extend battery life through superior efficiency and reduced heat dissipation. The series includes variants like the NCP2820A with faster startup times.

Replacement Considerations

Direct replacements include other NCP2820 variants such as NCP2820FCT2G or NCP2820MUTBG, provided the package type matches the design constraints. Verify pin compatibility and thermal characteristics when substituting.