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Product Detailed Parameters
- Description：IC AMP D STEREO 10W POWERSSO36
- Series：-
- Mfr：STMicroelectronics
- Package：Tube
- Type：Class D
- Output Type：2-Channel (Stereo)
- Max Output Power x Channels @ Load：10W x 2 @ 6Ohm
- 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 TDA7491P is a dual BTL Class-D audio amplifier designed for LCD TVs and monitors. It operates on a single supply voltage ranging from 5V to 18V. The device delivers 10W + 10W continuous output power at 6Ω load with 11V supply, or 9.5W + 9.5W at 8Ω load with 12V supply. It features high efficiency up to 90% and utilizes a PowerSSO-36 exposed-pad-down package that eliminates the need for a separate heatsink. The chip supports filterless operation, differential inputs, and four fixed gain settings: 20dB, 26dB, 30dB, and 32dB.
Feature Summary
- Filterless operation reduces external component count
- Differential inputs minimize common-mode noise
- Exposed-pad-down package enables heatsink-free installation
- Supports external synchronization for multi-amplifier systems
Applications
- LCD TV audio systems
- Computer monitor audio outputs
- Compact sound system designs
Procurement Notes
Verify the specific ordering suffix to confirm pin compatibility with legacy variants such as TDA7491LP or TDA7491HV. Confirm the package orientation matches the exposed pad down requirement for thermal dissipation. Ensure the design accounts for the wide supply voltage range during power stage selection. Validate that the application circuit supports the required fixed gain configuration via hardware jumpers or resistors.
Selection Notes
Select this component when space constraints prohibit the use of large heat sinks due to its efficient thermal management. Choose the appropriate fixed gain setting based on the input signal level to optimize dynamic range. Ensure the power supply can maintain stability across the 5V to 18V operating range. Consider the differential input requirement if the source signal is susceptible to common-mode interference.
Part Context
This part belongs to STMicroelectronics' D-class audio amplifier family optimized for display applications. It shares pinout compatibility with the TDA7491LP and TDA7491HV series, facilitating direct upgrades or replacements in existing designs. The technology focuses on high efficiency and reduced bill of materials through filterless output stages.
Replacement Considerations
The TDA7491LP and TDA7491HV are officially documented as pin-to-pin compatible substitutes. Verify that the alternative variant meets the specific voltage or power requirements of the target application before substitution.
