| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
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3,931 pcs
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3931 pcs | On Request | 1 | On Request | On Request | 03+ | On Request | On Request |
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The TDA7451 is a versatile car radio power amplifier from STMicroelectronics, capable of delivering 4x7W or 2x22W of output power at 4Ω. This device integrates a triple power supply with multiple voltage regulators, including 5V @ 150mA with reset, 5V @ 500mA with ST-BY, and 8.5V @ 200mA with ST-BY. It features a minimized external component count, eliminating the need for decoupling capacitors, bootstrap capacitors, and external compensation.
Key design features include a pop-free audio section, ST-BY and MUTE functions, and comprehensive protection mechanisms such as clip detector, thermal warning, short circuit detection, load dump, and overrating chip temperature protection. The built-in regulators also offer diagnostic features for undervoltage, 8.5V drop sense, short circuit, load dump, and over-temperature conditions. The TDA7451 is supplied in a Flexiwatt25 package.
This preliminary data indicates the TDA7451 is suitable for automotive audio applications where high output power, integrated functionality, and robust protection are required. Its design aims to simplify the audio system implementation by reducing the number of external components.
| Qty | Low | High |
|---|---|---|
| 1+ | $1.39 | $1.39 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The TDA7451 can deliver 4 x 7W or 2 x 22W at 4Ω @ 14.4V, 1KHz; 10% THD. It also has a maximum capability of 4 x 9.5W or 2 x 32W/4Ω.
The TDA7451 includes a 5V @ 150mA regulator with reset, a 5V @ 500mA regulator with ST-BY, and an 8.5V @ 200mA regulator with ST-BY.
The TDA7451 has an internally fixed gain of 20dB.
The TDA7451 has an operating supply voltage of up to 18V, a DC supply voltage of up to 28V, and a peak supply voltage of up to 40V (t = 50ms).
The TDA7451 includes general protections like load dump and overrating chip temperature, audio section protections like output short to ground, Vs, and across the load, and power supply section protection like short circuit protection to ground.