TDA8925ST/N1,112

Overview

The TDA8925ST/N1,112 is a two-channel Class-D audio power amplifier power stage manufactured by NXP. It operates within a supply voltage range of ±7.5 V to ±30 V and delivers up to 20 W per channel into a 6 Ω load at ±15 V with 10% THD. The device achieves an efficiency exceeding 94% and features very low quiescent current consumption. It utilizes a self-oscillating architecture requiring no external oscillator, eliminating the need for a heatsink in typical applications.

Feature Summary

• High-efficiency switching power stage utilizing Class-D technology
• Integrated overtemperature and short-circuit protection with diagnostic output
• Self-oscillating digital amplifier system operation without external clock
• Wide operating supply voltage range from ±7.5 V to ±30 V

Applications

• Television sets
• Home-sound systems
• Multimedia audio systems
• Mains-fed audio equipment

Procurement Notes

Verify the specific ordering suffix against the manufacturer's latest documentation to confirm package type and compliance status. Ensure the component matches the required thermal and electrical specifications for the target application design. Cross-reference the datasheet revision date to confirm technical accuracy before integration.

Selection Notes

Select this component for designs requiring high efficiency and minimal thermal management due to its no-heatsink capability. Verify that the control logic interface supports the required digital enable and switch inputs. Confirm that the single-ended configuration meets the system's output power requirements under the intended load impedance and supply voltage conditions.

Part Context

This part belongs to the TDA8925 family of power stages designed for compact, high-performance audio amplification. It serves as the output driver for self-oscillating Class-D systems, handling the level shifting from low-power PWM signals to high-power DMOS switching. The RDBS17P package facilitates through-hole mounting on printed circuit boards.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.