TS4871IST

Overview

The TS4871IST is a monolithic audio power amplifier in MiniSO8 package. It delivers 1 W continuous RMS output power into an 8 Ω load at 5 V supply with 1% THD. Operating voltage ranges from 2.5 V to 5.5 V. Standby current reduces to less than 10 nA. Total harmonic distortion plus noise is 0.15%. Power supply rejection ratio is 75 dB at 217 Hz. Gain bandwidth product is 2 MHz. Supply current is typically 6 mA.

Feature Summary

• Rail-to-rail output capability for maximum power efficiency
• Ultra-low standby mode consumption for battery preservation
• Internal thermal shutdown protection against overheating
• Unity-gain stable design simplifies external component configuration

Applications

• Mobile phones and cellular devices
• Laptop and notebook computers
• Portable audio devices

Procurement Notes

Verify the specific ordering suffix IST corresponds to the MiniSO8 package variant required for your PCB layout. Confirm RoHS compliance status through official STMicroelectronics documentation prior to finalizing procurement orders. Ensure the active status of this part number is current before initiating production integration.

Selection Notes

Select this component for applications requiring high output power relative to supply voltage constraints. The BTL architecture allows for higher power delivery compared to single-ended configurations. Verify that the operating temperature range meets environmental requirements. Consider the external gain-setting resistors when designing the signal path.

Part Context

This device belongs to the TS4871 family of low-voltage audio amplifiers designed by STMicroelectronics. It is engineered to minimize external components while maintaining high audio quality standards. The MiniSO8 package provides space-saving benefits for compact electronic designs.

Replacement Considerations

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