TFA9843AJ/N1,112

Overview

The TFA9843AJ/N1,112 is a two-channel single-ended audio power amplifier manufactured by NXP USA Inc. It operates within a supply voltage range of 9 V to 28 V and delivers up to 20 W of stereo output power. The device features a maximum gain of 26 dB and includes integrated volume control via Pin 7. It utilizes a DBS9P (DBSP-9) through-hole package with an exposed die pad for thermal management.

Feature Summary

• Integrated volume control functionality on Pin 7
• Built-in protection against short circuits and thermal overload
• Soft clipping and input clamping capabilities
• Standby and mute modes with low standby current

Applications

• CRT TV and LCD TV systems
• Computer monitors
• PC speakers
• Boom boxes
• Mini and micro audio receivers

Procurement Notes

Verify the specific ordering suffix and manufacturer documentation status before integration. Confirm that the component meets all required environmental and safety standards for the intended application environment. Ensure compatibility with existing design constraints regarding package dimensions and pin configurations.

Selection Notes

Select this component for designs requiring integrated volume control without external digital interfaces. Consider the thermal resistance characteristics when designing heatsinking solutions for high-power applications. Verify that the operating temperature range aligns with the system's environmental requirements.

Part Context

This part belongs to the TFA984x series of audio amplifiers from NXP Semiconductors. It is pin-compatible with several other variants in the family, differing primarily in the function assigned to Pin 7. The series targets consumer audio applications requiring robust performance and simplified system architecture.

Replacement Considerations

The TFA9842AJ, TFA9843(B)J, TFA9842(B)J, and TFA9841J are pin-compatible alternatives. Note that these variants utilize Pin 7 for mode selection rather than volume control.