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Product Detailed Parameters
- Description：IC AMP D MONO 25W 15MULTIWATT
- Series：-
- Mfr：STMicroelectronics
- Package：Tube
- Type：Class D
- Output Type：1-Channel (Mono)
- Max Output Power x Channels @ Load：25W x 1 @ 8Ohm
- Voltage - Supply：±10V ~ 25V
- Features：Mute, Short-Circuit and Thermal Protection, Standby
- Mounting Type：Through Hole
- Supplier Device Package：15-Multiwatt
- Package / Case：Multiwatt-15 (Vertical, Bent and Staggered Leads)
- Operating Temperature：0°C ~ 70°C (TA)
- Grade：-
- Qualification：-
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Overview
The TDA7482 is a monolithic audio Class-D amplifier designed for high-efficiency applications in television and home stereo systems. It delivers 25W output power into 8Ω or 4Ω loads at 10% THD, with an efficiency of up to 88.5%. The device operates on split supplies ranging from ±10V to ±25V. Key electrical characteristics include a closed-loop gain of 30dB, input noise between 7µV and 12µV, and a switching frequency range of 100kHz to 200kHz. It features comprehensive protection mechanisms including thermal shutdown at 150°C, overcurrent protection, and short-circuit protection.
Feature Summary
- High-efficiency Class-D architecture suitable for heat-sensitive environments
- Integrated protection against thermal overload, short circuits, and overvoltage
- Supports standby and mute control functions for system management
Applications
- Television sets
- Home stereo systems
Procurement Notes
Verify component status as the TDA7482 is listed as obsolete in official documentation. Confirm availability through authorized distributors or secondary markets. Ensure compatibility with existing Multiwatt15 footprints during design reviews. Check for updated replacement components if long-term supply stability is required for production.
Selection Notes
Select this component for designs requiring high power output with minimal thermal management due to its high efficiency. Verify that the application supports split power supply rails within the ±10V to ±25V range. Consider the Multiwatt15 package constraints for PCB layout and ensure adequate heatsinking if operating near maximum dissipation limits.
Part Context
The TDA7482 belongs to STMicroelectronics' portfolio of audio amplifiers, specifically targeting consumer electronics where space and thermal constraints are critical. It complements other Class-D solutions by offering robust protection features and high efficiency in a single-chip implementation.
Replacement Considerations
TDA7490 (Stereo/Mono BTL variant)
FAQ
What is the maximum junction temperature before thermal shutdown occurs?
Thermal shutdown activates at a junction temperature of 150°C.
How is the switching frequency determined?
The switching frequency is set by an external resistor connected to the FREQ pin, allowing adjustment within a range of 100kHz to 200kHz.
