Part Details for TDA7494 by STMicroelectronics
Results Overview of TDA7494 by STMicroelectronics
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Part Details for TDA7494
TDA7494 CAD Models
TDA7494 Part Data Attributes
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TDA7494
STMicroelectronics
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Datasheet
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TDA7494
STMicroelectronics
1 CHANNEL(S), VOLUME CONTROL CIRCUIT, ZFM15, MULTIWATT-15
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| Rohs Code | Yes | |
| Part Life Cycle Code | Obsolete | |
| Ihs Manufacturer | STMICROELECTRONICS | |
| Part Package Code | ZFM | |
| Package Description | MULTIWATT-15 | |
| Pin Count | 15 | |
| Reach Compliance Code | compliant | |
| ECCN Code | EAR99 | |
| HTS Code | 8542.39.00.01 | |
| Samacsys Manufacturer | STMicroelectronics |
TDA7494 Frequently Asked Questions (FAQ)
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STMicroelectronics provides a recommended PCB layout in the application note AN2986, which includes guidelines for component placement, thermal management, and routing to minimize electromagnetic interference (EMI) and ensure optimal performance.
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The input capacitor should be selected based on the input voltage, frequency, and ripple current requirements. A minimum capacitance of 220nF is recommended, with a voltage rating of at least 2x the maximum input voltage. X7R or X5R ceramic capacitors are suitable options.
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The maximum power dissipation of the TDA7494 depends on the ambient temperature and the thermal resistance of the PCB. According to the datasheet, the maximum power dissipation is 20W at 25°C ambient temperature, but this can be derated to 15W at 50°C ambient temperature.
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The TDA7494 has built-in overvoltage protection (OVP) and undervoltage protection (UVP) circuits. However, additional external protection circuits can be added to provide extra protection against voltage transients and surges. A voltage supervisor IC can be used to monitor the input voltage and shut down the device in case of an overvoltage or undervoltage condition.
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The recommended heatsink for the TDA7494 depends on the power dissipation and ambient temperature. A heatsink with a thermal resistance of less than 10°C/W is recommended. The datasheet provides a thermal model and thermal resistance calculations to help designers select a suitable heatsink.