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Product Detailed Parameters
- Description：IC AMP D STEREO 20W POWERSSO36
- Series：-
- Mfr：STMicroelectronics
- Package：Tube
- Type：Class D
- Output Type：2-Channel (Stereo)
- Max Output Power x Channels @ Load：20W x 2 @ 8Ohm
- Voltage - Supply：5V ~ 18V
- Features：Depop, Differential Inputs, Mute, Short-Circuit and Thermal Protection, Standby
- Mounting Type：Surface Mount
- Supplier Device Package：PowerSSO-36 EPD
- Package / Case：36-PowerBFSOP (0.295", 7.50mm Width)
- Operating Temperature：-40°C ~ 85°C (TA)
- Grade：-
- Qualification：-
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Overview
The TDA7491HV is a dual BTL Class-D audio amplifier designed for single-supply operation in LCD TVs and monitors. It delivers 20 W + 20 W continuous output power at VCC=18V, RL=8Ω, THD=10%. Operating voltage ranges from 5V to 18V with efficiency up to 90%. Features include four selectable fixed gains (20, 26, 30, 32 dB), differential inputs, and no 'pop' at turn-on/off. The device integrates standby, mute, short-circuit, and thermal protection, supporting external synchronization.
Feature Summary
- High-efficiency dual BTL Class-D architecture eliminates the need for separate heatsinks when using exposed-pad packages.
- Differential input configuration minimizes common-mode noise interference during signal processing.
- Integrated protection mechanisms include short-circuit prevention and thermal overload shutdown capabilities.
Applications
- LCD television systems
- Computer monitor displays
- Audio amplifier evaluation boards
Procurement Notes
Verify component authenticity through authorized STMicroelectronics distributors or certified partners. Confirm package type matches design requirements, as variants exist within the family. Check datasheet revisions for updated electrical characteristics. Ensure ESD handling protocols are followed during assembly due to sensitive semiconductor construction.
Selection Notes
Select this model for applications requiring high power density without external cooling solutions. Verify supply voltage compatibility within the 5V to 18V range. Consider gain settings matching the source signal level. Evaluate thermal dissipation requirements based on PCB copper area, as heat sinking is not mandatory but dependent on ambient conditions.
Part Context
This component belongs to the TDA7491 family of audio amplifiers. It shares pin compatibility with TDA7491P and TDA7491LP models, facilitating design upgrades or replacements within existing layouts while offering distinct power and voltage specifications tailored for specific display audio needs.
Replacement Considerations
Pin-to-pin compatible substitutes include TDA7491P and TDA7491LP. Verify that alternative models meet the required output power and voltage specifications for the specific application before substitution.
