TDA1562SD/N3C,112

Overview

The TDA1562SD is a monolithic integrated 70 W/4 Ω Bridge-Tied Load (BTL) class-H high efficiency power amplifier housed in a 17-lead RDBS17P plastic rectangular-DIL-bent-SIL package (SOT668-2). It operates from a single supply voltage ranging from 8 V to 18 V, with a typical operating point of 14.4 V. The device delivers up to 70 W output power at 10% THD and 55 W at 0.5% THD into a 4 Ω load. Key electrical parameters include a fixed voltage gain of 26 dB, a quiescent current of 110 mA, and an output offset voltage of 100 mV maximum.

Feature Summary

• Class-H architecture utilizing external lift capacitors to boost internal supply voltage for high peak power while maintaining low average dissipation during music signals.
• Integrated diagnostic interface providing open-collector outputs for dynamic distortion detection, short-circuit status, open load verification, and temperature protection alerts.
• Flexible control modes via dedicated pins for standby, mute, and fast mute operations, including a quick start feature for rapid activation within 50 ms.
• Comprehensive protection mechanisms including load dump tolerance up to 45 V, thermal shutdown above 120 °C case temperature, and short-circuit safety to ground, supply, and across the load.

Applications

• Car audio systems such as car radios and power boosters
• Mains-fed audio combinations including midi and mini systems
• TV sound amplification circuits

Procurement Notes

Verify the specific ordering suffix 'N3C,112' against official NXP or Philips Semiconductors documentation, as the provided datasheet lists standard variants like TDA1562SD without this suffix. Confirm that the component matches the SOT668-2 package outline and RDBS17P physical dimensions. Ensure the source document is the latest product specification, as preliminary data sheets may contain specifications subject to change without notice.

Selection Notes

Select this component for applications requiring high efficiency and significant output power from a single low-voltage supply. The class-H operation reduces heat dissipation compared to class-B designs, simplifying heatsink requirements for music signals. Consider the diagnostic pin capabilities if system monitoring for faults like clipping or overheating is required. Ensure the design accommodates the necessary external electrolytic capacitors for the lift-supply function to achieve full power output.

Part Context

The TDA1562 series includes variants TDA1562Q, TDA1562ST, and TDA1562SD, all sharing identical electrical characteristics but differing in package form factors. The TDA1562SD specifically utilizes the reverse bent lead configuration of the RDBS17P package. This family is designed for robust performance in automotive and consumer audio environments where reliability and thermal management are critical constraints.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Users must consult official manufacturer channels for cross-reference information regarding equivalent components or updated revisions of the TDA1562 series.