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Product Detailed Parameters
- Description：IC AMP AB QUAD 85W 27FLEXIWATT
- Series：-
- Mfr：STMicroelectronics
- Package：Tube
- Type：Class AB
- Output Type：4-Channel (Quad)
- Max Output Power x Channels @ Load：85W x 4 @ 2Ohm
- Voltage - Supply：6V ~ 18V
- Features：Mute, Short-Circuit and Thermal Protection, Standby
- Mounting Type：Through Hole
- Supplier Device Package：27-Flexiwatt (Vertical)
- Package / Case：27-Flexiwatt, Formed Leads
- Operating Temperature：-40°C ~ 105°C (TA)
- Grade：-
- Qualification：-
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Overview
The STPA003HSD-48X is a MOSFET class AB audio power amplifier designed for high-power car radio applications. It features an output current capability and distortion performance suitable for automotive environments. The device is compliant with low voltage operation specifications, including the 'start-stop' battery profile during engine stop. It includes a DC offset detector and, in the Flexiwatt27 package, a high side driver or a clipping detector. Key electrical capabilities include a maximum output of 4 x 52 W into 4 Ω and 4 x 85 W into 2 Ω. At 14.4 V supply with 1 kHz frequency and 10% THD, it delivers 4 x 30 W into 4 Ω and 4 x 55 W into 2 Ω.
Feature Summary
- Robust against fortuitous misconnections such as reversed battery, load dump voltage, and open GND conditions.
- Excellent GSM noise immunity and Hi-Fi class distortion performance.
- Low external component count due to internally fixed gain and absence of bootstrap capacitors.
- Integrated protections including output short circuit, overtemperature with soft thermal limiter, and DC offset detection.
Applications
- High-power car radio systems
- Automotive audio amplifiers requiring start-stop battery profile compliance
Procurement Notes
Verify the specific suffix and package variant when ordering, as the STPA003 series offers different configurations such as integrated high-side drivers or clipping detectors depending on the package type. Confirm that the selected part matches the required protection features and output power specifications for the target automotive application. Ensure compatibility with low-voltage start-stop vehicle electrical systems.
Selection Notes
Select this amplifier for applications demanding high output power with minimal external components. It is suitable for designs requiring robustness against automotive electrical transients and low-voltage operation. Consider the package options if high-side driving or clipping detection functions are needed within the amplifier block itself.
Part Context
The STPA003 belongs to STMicroelectronics' family of MOSFET class AB audio power amplifiers tailored for automotive use. It addresses the need for high efficiency and reliability in modern vehicle infotainment systems, particularly those adhering to stringent OEM specifications for low voltage operation and electromagnetic compatibility.
