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Product Detailed Parameters
- Description：IC AMP AB MONO 40W POWERSO-20
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Class AB
- Output Type：1-Channel (Mono)
- Max Output Power x Channels @ Load：40W x 1 @ 3.2Ohm
- Voltage - Supply：8V ~ 18V
- Features：Depop, Differential Inputs, Mute, Short-Circuit and Thermal Protection, Standby
- Mounting Type：Surface Mount
- Supplier Device Package：PowerSO-20
- Package / Case：20-SOIC (0.433", 11.00mm Width) Exposed Pad
- Operating Temperature：-40°C ~ 150°C (TJ)
- Grade：-
- Qualification：-
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Overview
The TDA7391PDUTR is a bridge Class-AB audio power amplifier from STMicroelectronics, designed for high-power automotive radio applications. It delivers up to 40W into a 3.2Ω load and 32W into a 3.2Ω load at 14.4V with 10% THD. The device operates on a single supply voltage ranging from 8V to 18V. It features differential inputs, internally fixed gain of 30dB, and supports standby mode. Packaged in a 20-pin PowerSO tube, it includes protections against short circuits, thermal overload, and load dumps.
Feature Summary
- Bridge Class-AB architecture optimized for high-power car radio boosters
- Differential input capability accepting both single-ended and differential signals
- Integrated protection mechanisms including short circuit, thermal overload, and load dump resistance
- Pop-free mute and standby operations with CMOS-compatible control
Applications
- High-power automotive radio amplifiers
- Car audio system boosters
- End-level car radio equipment
Procurement Notes
Verify the specific suffix PDUTR indicates the PowerSO-20 surface-mount package in tape-and-reel format. Confirm active status or obsolescence through official ST channels, as availability varies by region. Ensure compatibility with 14.4V automotive electrical systems and check for AEC-Q100 qualification requirements for your specific vehicle platform.
Selection Notes
Select this component when a single-channel mono bridge amplifier is required for automotive environments. It is suitable for designs needing high output power with minimal external components due to internal fixed gain and lack of bootstrap capacitors. Consider the PowerSO-20 package for surface-mount assembly needs compared to the through-hole Multiwatt variant.
Part Context
The TDA7391 series comprises bridge Class-AB audio power amplifiers intended for automotive use. The TDA7391PDUTR specifically refers to the surface-mount version in a 20-pin PowerSO package supplied in tape-and-reel. It shares core specifications with the through-hole TDA7391P but differs in packaging and handling characteristics for automated assembly processes.
Replacement Considerations
The TDA7391PD is the through-hole equivalent in a Multiwatt-11 package. For low-voltage operation variants, consider the TDA7391LV series. Verify pinout and thermal performance similarities before substituting.
