TDA1554Q/N2,112

Overview

The TDA1554Q/N2,112 is an integrated Class-B output amplifier in a 17-lead SIL plastic power package. It provides four identical amplifiers with differential inputs for quad single-ended or stereo bridge-tied load (BTL) configurations. The device operates within a supply voltage range of 6.0 V to 18.0 V. In stereo BTL mode with a 4 Ω load and 10% THD, it delivers up to 22 W of output power. In quad single-ended mode with a 2 Ω load and 10% THD, it delivers up to 11 W per channel. The circuit includes mute/stand-by functionality, fixed gain, and comprehensive protection features.

Feature Summary

• Supports flexible configuration as either quad single-ended or stereo bridge-tied load (BTL) amplifiers
• Includes mute and stand-by switch capabilities with low current consumption
• Features built-in protections including thermal shutdown, reverse polarity safety, and short-circuit safety to ground and supply
• Designed for high energy handling capability on outputs even when supply voltage is zero

Applications

• Car radio audio systems
• Automotive infotainment power stages
• Single-ended speaker drive circuits
• Bridge-tied load speaker drive circuits

Procurement Notes

Verify the specific ordering suffix /N2,112 against manufacturer documentation to confirm pinout and package variant alignment. Ensure the procurement source provides valid RoHS compliance data. Confirm that the component status matches the required production lifecycle stage, as datasheets may indicate historical availability for older automotive specifications.

Selection Notes

Select this component for applications requiring high output power in a single IC package. It is suitable for designs needing both single-ended and BTL flexibility. Consider the 17-lead SIL package constraints for PCB layout. Verify that the system supply voltage remains within the 6.0 V to 18.0 V operating range for optimal performance.

Part Context

The TDA1554Q is part of NXP's (formerly Philips) line of integrated audio power amplifiers. It is specifically engineered for automotive environments, offering robust protection against load dumps and reverse polarity. The device integrates multiple amplifier channels to reduce external component count and simplify board design in car radio applications.

Replacement Considerations

Check for direct cross-references from NXP or other manufacturers offering identical pinouts and electrical characteristics. Verify compatibility with existing thermal management solutions due to similar power dissipation profiles.

FAQ

What is the maximum supply voltage for the TDA1554Q?

The operating supply voltage range is 6.0 V to 18.0 V. The device can withstand up to 30 V non-operating and 45 V during load dump conditions.

How does the TDA1554Q handle short circuits?

The device is AC and DC short-circuit safe to ground and the positive supply voltage (VP).

Can the TDA1554Q operate without a power supply connected?

Yes, it has the capability to handle high energy on its outputs even when the supply voltage (VP) is 0 V.