TDA7851PD

$2.51

Description：DISCRETE
Series：-
Mfr：STMicroelectronics
Package：Bulk

SKU:b7ec63000109 Category: Audio Amplifiers Brand: STMicroelectronics

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Product introduction

Product Detailed Parameters

Description：DISCRETE
Series：-
Mfr：STMicroelectronics
Package：Bulk
Type：-
Output Type：-
Max Output Power x Channels @ Load：-
Voltage - Supply：-
Features：-
Mounting Type：-
Supplier Device Package：-
Package / Case：-
Operating Temperature：-
Grade：-
Qualification：-

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TDA7851PD

Overview

The TDA7851PD is a Class-AB audio power amplifier manufactured by STMicroelectronics, designed for automotive applications. It features a quad bridge output configuration delivering up to 48 W per channel into a 4 Ω load at 14.4 V with 10% THD+N. The device utilizes fully complementary P-Channel/N-Channel MOSFET technology for rail-to-rail output swing and high current capability. It operates within a supply voltage range of 8 V to 18 V and supports a minimum load impedance of 2 Ω. The component is housed in a 25-pin Flexiwatt package suitable for through-hole mounting.

Feature Summary

Fully complementary P-Channel/N-Channel MOSFET output structure enabling rail-to-rail voltage swing
Integrated protections including output short circuit, overtemperature soft limiter, and reversed battery protection
Fixed internal gain of 26 dB eliminating the need for external compensation or bootstrap capacitors

Applications

High-power car radio systems
Automotive audio amplification
Vehicle infotainment sound processing

Procurement Notes

Verify the specific suffix 'PD' against the manufacturer's official datasheet to confirm pinout compatibility and thermal characteristics. Ensure the procurement source provides valid AEC-Q100 qualification documentation. Confirm that the Flexiwatt-25 package matches the target PCB footprint requirements before finalizing orders.

Selection Notes

Select this component when designing automotive audio systems requiring high output power with low distortion. The integrated protections simplify design complexity by reducing external component count. Verify that the application environment supports the specified operating temperature range and that the heat sinking strategy accommodates the maximum dissipation capabilities of the Flexiwatt package.

Part Context

This part belongs to the TDA7851 series of automotive audio amplifiers from STMicroelectronics. The series includes variants such as TDA7851L and TDA7851PDTR, which share similar core functionalities but may differ in packaging or reel specifications. These devices are engineered to meet the rigorous demands of modern vehicle audio performance standards.