TDA1552Q/N4,112

Overview

The TDA1552Q/N4,112 is a Philips Semiconductors integrated class-B output amplifier designed for stereo car radio applications. It features two amplifiers in a Bridge Tied Load (BTL) configuration within a 13-lead single-in-line plastic power package. The device delivers 22 W of output power per channel into a 4 Ω load with 10% THD at a 14.4 V supply. Key electrical parameters include a fixed closed-loop voltage gain of 26 dB, an input impedance of approximately 60 kΩ, and a total quiescent current of 80 mA typical. It operates within a supply voltage range of 6.0 V to 18.0 V.

Feature Summary

• Integrated BTL stereo amplifier architecture requiring minimal external components
• Built-in mute and stand-by switch functionality with low standby current
• Comprehensive protection mechanisms including thermal shutdown, reverse polarity safety, and short-circuit protection
• High ripple rejection capability across the audio frequency spectrum

Applications

• Stereo car radio power amplification
• Automotive audio systems requiring high output power
• Bridge-tied load speaker driving configurations

Procurement Notes

Verify component authenticity through official NXP or authorized distributor channels. Confirm the specific ordering suffix matches the required package variant. Check material declarations and environmental compliance status against current regulatory standards. Ensure storage conditions adhere to specified limits to maintain reliability before installation.

Selection Notes

Select this component for automotive audio designs necessitating high power output in a compact form factor. Evaluate the 13-lead SIL package constraints regarding PCB layout and thermal dissipation requirements. Consider the fixed gain characteristic when designing preceding signal processing stages. Verify that the application environment remains within the specified operating temperature and voltage ranges.

Part Context

This part belongs to the TDA1552 series of power amplifiers developed primarily for the automotive industry. It represents a solution for integrating stereo amplification directly into car radio units without requiring complex external driver circuits. The design focuses on robustness against automotive electrical noise and transient events.

Replacement Considerations

Consult official documentation for direct replacements. Cross-reference pinouts and electrical characteristics carefully if considering alternative manufacturers.

FAQ

What is the maximum load dump voltage the TDA1552Q can withstand?

The device is load dump protected up to 45 V for a duration of 50 ms with a rise time greater than or equal to 2.5 ms.

How does the mute/stand-by switch function affect power consumption?

In the stand-by condition, the device draws a very low current, typically less than 100 μA, minimizing battery drain when the system is inactive.