NCP2820FCT1

Overview

The NCP2820FCT1G is a mono Class-D audio power amplifier from ON Semiconductor. It delivers 2.65 W continuous average power to an 8-ohm load at 5.0 V supply in BTL configuration, or 1.4 W with less than 1% THD+N. The device operates on a 2.5 V to 5.5 V supply range and features up to 90% efficiency. It utilizes PWM modulation for low noise and includes a fully differential input design that eliminates the need for input coupling capacitors.

Feature Summary

• Filterless capability optimized for use with inductive transducers
• Fully differential input architecture eliminating input coupling capacitors
• Advanced turn-on/turn-off transitions to prevent pop and click noise
• Integrated current breaker circuit for short-circuit protection

Applications

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

Procurement Notes

Verify the specific suffix 'FCT1' against the manufacturer's ordering information to confirm package type and revision. Ensure compatibility with system voltage requirements between 2.5 V and 5.5 V. Confirm thermal management needs based on PCB layout and ambient temperature conditions.

Selection Notes

Select this component for applications requiring high efficiency and minimal external components. The filterless design reduces bill of materials cost and board space. Consider the UDFN8 package for compact designs. Verify gain settings using external resistors if different from the standard configuration.

Part Context

The NCP2820 series includes variants like NCP2820A with faster startup times and NCV2820 for automotive applications. The FCT1 suffix typically denotes the 9-pin flip-chip CSP package. This family targets portable electronics where battery life and size are critical constraints.

Replacement Considerations

Check datasheet for pin-compatible alternatives within the same series. Verify electrical parameters such as output power and quiescent current match application requirements before substitution.