NCP2809BDMR2G

Overview

The NCP2809BDMR2G is a stereo audio power amplifier from the NCP2809 series, manufactured by onsemi. It delivers 135 mW of continuous average power per channel into 16 Ω loads. The device operates within a supply voltage range of 2.2 V to 5.5 V and features an adjustable gain configuration via external components. It incorporates pop-and-click noise protection, ultra-low current shutdown mode, thermal overload protection, and excellent power supply rejection ratio (PSRR) for direct battery connection.

Feature Summary

• Capable of delivering high-quality output power from low supply voltages with minimal external components
• Includes internal circuitry to eliminate heavy coupling capacitors when connecting to stereo headsets
• Features pop-and-click noise protection and ultra-low current shutdown mode for portable systems
• Offers excellent power supply rejection ratio allowing direct connection to battery sources

Applications

• Cellular phones
• Portable stereo devices
• MP3 players
• Personal and notebook computers

Procurement Notes

Verify the specific suffix DMR2G corresponds to the Micro10 package and tape-and-reel container format as defined in the official datasheet ordering information. Confirm that the B variant matches the requirement for externally settable gain rather than fixed internal gain. Ensure compliance with RoHS and Pb-free packaging standards required for the target assembly process.

Selection Notes

Select the NCP2809B variant over the A version when external gain adjustment is necessary for the application design. Consider the NOCAP configuration if using three-point stereo headsets to reduce component count and PCB area. Evaluate the trade-off between output coupling capacitors and crosstalk performance based on the headset impedance and jack connector type.

Part Context

The NCP2809 series includes variants like NCP2809A with fixed 0 dB gain and NCP2809B with adjustable gain. Both share similar power delivery capabilities and protection features. The DM suffix indicates the Micro10 package type, while R2G denotes the reel packaging configuration. This series is optimized for cost-effective stereo headphone amplification in mobile electronics.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.