onsemi NCP2823AFCCT2G

The NCP2823A/B are cost effective mono audio power amplifiers designed for portable electronic devices. NCP2823A is optimized for 8 Ω operation and NCP2823B can operate with speaker impedance down to 4.0 Ω. For Instance, NCP2823B is capable of delivering 3 W of continuous average power to a 4.0 Ω from a 5.0 V supply in a Bridge Tied Load (BTL) configuration. Under the same conditions, NCP2823A can provide 1.5 W to an 8.0 Ω BTL load with less than 10% THD+N. For cellular handsets or PDAs it offers space and cost savings because no output filter is required when using inductive transducers. With more than 90% efficiency and very low shutdown current, it increases the lifetime of your battery and drastically lowers the junction temperature. NCP2823 processes analog inputs with a pulse width modulation technique that lowers output noise and THD. The device allows independent gain while summing signals from various audio sources. Thus, in cellular handsets, the earpiece, the loudspeaker and even melody ringer can be driven with a single NCP2823. Due to its low 26 μV noise floor, A−weighted, clean listening is guaranteed no matter the load sensitivity.

• Optimized PWM Output Stage: Filterless Capability
• Externally gain setting
• Low consumption: 1.8 mA for NCP2823A
• High efficiency: up to 92%
• Large Output Power Capability: 3 W @ V_P = 5.0 V, R_L = 4 Ω, THD+N < 10%; 3 W @ V_P = 5.5 V, R_L = 4 Ω, THD+N < 1%
• High PSRR: up to -77 dB
• Fully Differential Capability: RF immunity
• Thermal and Auto recovery Short−Circuit Protection
• CMRR (-80 dB) Eliminates Two Input Coupling Capacitors
• Pin to Pin compatible with NCP2820 Flip−Chip
• These Devices are Pb−Free and are RoHS Compliant

• Audio Amplifier for
• Cellular Phones
• Digital Cameras
• Personal Digital Assistant and Portable Media Player GPS