TDA8943SF/N1,112

Overview

The TDA8943SF is a single-channel audio power amplifier delivering 6 W into an 8 Ω load at 12 V supply. It features a Bridge Tied Load (BTL) architecture with an all-NPN output stage capable of 2 A peak current. The device includes standby and mute logic, short-circuit protection to ground, supply, and across the load, and thermal shutdown. It operates within a supply voltage range of 6 V to 18 V and utilizes a 9-lead SIL package.

Feature Summary

• Bridge Tied Load (BTL) mono amplifier with all-NPN output stage
• Integrated standby and mute modes for low power consumption
• Comprehensive protection against short circuits and thermal overload
• High supply voltage ripple rejection capability

Applications

• Mains fed applications such as TV sound systems
• Personal computer audio subsystems
• Portable audio equipment designs

Procurement Notes

Verify the specific ordering suffix N1,112 against the manufacturer's current documentation to confirm availability and exact package variant. Ensure the design accounts for the required heatsinking due to the thermal characteristics specified in the datasheet.

Selection Notes

Select this component for mono BTL applications requiring fixed gain and minimal external components. Consider the 9-lead SIL package constraints and the necessity of an external heatsink for optimal thermal performance under high power conditions.

Part Context

This part belongs to the TDA894x family of audio amplifiers. It shares PCB compatibility with other types in the series, allowing a single footprint to accommodate both mono and stereo products from the same family line.

Replacement Considerations

Consult official manufacturer documentation for confirmed substitute part numbers. No direct replacements are identified in the provided source material.

FAQ

How does the MODE pin control the operational states?

The MODE pin selects between standby, mute, and operating modes based on DC voltage levels relative to the supply voltage.

What protection mechanisms are included?

The device includes short-circuit protection to ground, supply, and across the load, as well as thermal shutdown protection.